Breezback

UDP Client Server

2008-02-25T07:47:00.001-08:00

//Create an instance of UdpClient.
UdpClient udpClient = new UdpClient(serverName, SAMPLEUDPPORT);
Byte[] inputToBeSent = new Byte[256];
inputToBeSent = System.Text.Encoding.ASCII.GetBytes(whatEver.ToCharArray());
IPHostEntry remoteHostEntry = Dns.GetHostByName(serverName);
IPEndPoint remoteIpEndPoint = new IPEndPoint(remoteHostEntry.AddressList[0], SAMPLEUDPPORT);
int nBytesSent = udpClient.Send(inputToBeSent, inputToBeSent.Length);
Byte[] received = new Byte[512];
received = udpClient.Receive(ref remoteIpEndPoint);
String dataReceived = System.Text.Encoding.ASCII.GetString(received);
Console.WriteLine(dataReceived);
udpClient.Close();

UDP packet - Ask DNS

2008-02-25T02:26:00.001-08:00

clipped from www.codeproject.com

MIB Overview

2008-02-21T07:00:00.001-08:00

clipped from www.unleashnetworks.com

SNMP Library Free Project (Mono)

2008-02-21T02:45:00.001-08:00

clipped from snmpdotnet.sourceforge.net

I started this project because of the lack of resources for the older, but still highly
used SNMP protocol. The SNMP protocol still remains the de facto standard when it comes
to network monitoring and management.

IDataProvider - Implement Provider Model C#

2008-02-18T00:37:00.001-08:00

clipped from www.code-magazine.com

In the CreateDataAdapter method you will have to do a couple of things to create an instance of a specific data adapter. First you will need to initialize the appropriate provider based on the information in the configuration file. The InitProvider method is responsible for this and will be shown in the next section. After the appropriate DataProvider class is loaded the CreateDataAdapter method on that specific provider will be called. This is where the SqlDataAdapter or the OleDbDataAdapter or the OracleDataAdapter is created.

public static IDbDataAdapter CreateDataAdapter(
string SQL, string ConnectString)
{
  IDbDataAdapter da;

  // Make sure provider is created
  InitProvider();

  da = DataProvider.CreateDataAdapter();

  da.SelectCommand = CreateCommand(SQL,
   ConnectString, false);

  return da;
}
In Visual Basic

tcp

2008-02-18T00:09:00.001-08:00

clipped from en.wikipedia.org

A TCP segment consists of two sections:

header

data

The TCP header[2] consists of 11 fields, of which only 10 are required. The eleventh field is optional (pink background in table) and aptly named "options".

TCP Header
Bit offset Bits 0–3 4–7 8–15 16–31
0 Source port Destination port
32 Sequence number
64 Acknowledgment number
96 Data offset Reserved CWR ECE URG ACK PSH RST SYN FIN Window
128 Checksum Urgent pointer
160 Options (optional)
160/192+
Data

Source port (16 bits) – identifies the sending port

TCP diagram

2008-02-18T00:06:00.001-08:00

clipped from freebie.fatpipe.org

MSI parameter driven

2008-02-17T00:28:00.001-08:00

clipped from blogs.msdn.com

Adding msi parameters in Visual Studio Setup Project

I can’t find how and where to add the parameter list of the msi.

I had to modify a setup project of which creates an msi for an application.

During modification I had to add an extra parameter that should be given to the msi during installation.

While I searched I found only how to read the parameters supplied from command line using Context.Parameters.

But I can’t find at any place where to specify the parameters those can be supplied with msi. Finally I found it and so I am writing here as it may be useful to others.

In property Pages of Install, in the option CustomEvents, we can specify the arguments.

For example if for our msi, we have to add 2 parameters INSTLOG & X

Then in the CustomEvents, we have to specify it as:

/INSTLOG=”[INSTLOG]” /X=”[X]”

Simple SNMP

2008-02-14T13:04:00.001-08:00

From Richard Blum

clipped from www.java2s.com

// Send sysName SNMP request
      response = conn.get("get", argv[0], argv[1], "1.3.6.1.2.1.1.5.0");
      if (response[0] == 0xff)
      {
         Console.WriteLine("No response from {0}", argv[0]);
         return;
      }

      // If response, get the community name and MIB lengths
      commlength = Convert.ToInt16(response[6]);
      miblength = Convert.ToInt16(response[23 + commlength]);

      // Extract the MIB data from the SNMP response
      datatype = Convert.ToInt16(response[24 + commlength + miblength]);
      datalength = Convert.ToInt16(response[25 + commlength + miblength]);
      datastart = 26 + commlength + miblength;
      output = Encoding.ASCII.GetString(response, datastart, datalength);
      Console.WriteLine("  sysName - Datatype: {0}, Value: {1}",
              datatype, output);

      // Send a sysLocation SNMP request
      response = conn.get("get", argv[0], argv[1], "1.3.6.1.2.1.1.6.0");
      if (response[0] == 0xff)
      {
         Console.WriteLine("No response from {0}", argv[0]);
         return;
      }

SNMP C#

2008-02-14T13:02:00.001-08:00

clipped from www.c-sharpcorner.com

snmputil get ict-main-s.msroot.student.paisley.ac.uk public system.sysContact.0
To do this programmatically, proceed as follows:
RFC1157.Mgmt mib = new RFC1157.Mgmt();
ManagerSession sess=new ManagerSession(localhost,public);
ManagerItem mi=new ManagerItem(sess,mib.OID(mgmt.mib-2.system.sysContact.0));
Console.WriteLine(mi.Value.ToString());

An SNMP Library for .NET Framework

Mib.dll is a C# class library that handles the translation of MIB object identifiers (OID) sch as 1.3.6.1.2.1.1.4.0 to readable names such as system.sysContact.0. It also collects the help strings from the system mib files (on windows systems these are in the system folder, usually c:\windows\system32.) It contains one namespace, RFC1157.

C# Wmi change start mode of service

2008-02-14T05:57:00.001-08:00

clipped from www.thescripts.com

public void RestartService(string ServiceName)
{
ManagementPath myPath = new ManagementPath();
ManagementBaseObject outParams = null;
myPath.Server = System.Environment.MachineName;
myPath.NamespacePath = @"root\CIMV2";
myPath.RelativePath = "Win32_Service.Name='" + ServiceName + "'";
using (ManagementObject service = new ManagementObject(myPath))
{
// Set startmode to Automatic (auto start at boot )
ManagementBaseObject inputArgs =
service.GetMethodParameters("ChangeStartMode");
inputArgs["startmode"] = "Automatic";
outParams = service.InvokeMethod("ChangeStartMode", inputArgs, null);
// return check ignored for brevity
uint ret = (uint)(outParams.Properties["ReturnValue"].Value);
if(ret == 0)

WMI Security Rights

2008-02-14T02:46:00.001-08:00

clipped from msdn2.microsoft.com

Win32_Service Class

The
Win32_Service WMI class represents a service on a computer system running Windows. A service application conforms to the interface rules of the Service Control Manager (SCM), and can be started by a user automatically at system start through the Services control panel utility, or by an application that uses the service functions included in the Windows API. Services can start when there are no users logged on to the computer.

A user connecting from a remote computer must have the SC_MANAGER_CONNECT privilege enabled to be able to enumerate this class. For more information, see Service Security and Access Rights.

WMI namespaces

2008-02-14T00:14:00.001-08:00

clipped from articles.techrepublic.com.com

Impersonate User in Windows Forms

2008-02-12T08:41:00.001-08:00

clipped from www.codeproject.com

// create new identity using new primary token

WindowsIdentity newId = new WindowsIdentity
(pDuplicateTokenHandle);
WindowsImpersonationContext impersonatedUser =
newId.Impersonate();
// check the identity after impersonation

sResult += "After impersonation: " +
WindowsIdentity.GetCurrent().Name + "\r\n";
MessageBox.Show(this, sResult, "Success",
MessageBoxButtons.OK, MessageBoxIcon.Information);
return impersonatedUser;

Remoting Sample

2008-02-07T05:25:00.001-08:00

clipped from www.eggheadcafe.com

In simplistic terms, remoting in this scenario happens by proxy. The developer must create an interface class containing all properties and methods minus the actual code that will reside in each. The interface class must exist on both the client and server. Remember, this is only the public interface definition. The client will utilize the interface class to instantiate a proxy to the object locally. Via the proxy, anytime a property is referenced with a Get or Set statement or a method is called, .NET handles the communication to and from the client to the server over an http channel and the port designated by the developer.

Remoting Overview C#

2008-02-07T05:01:00.001-08:00

clipped from www.eggheadcafe.com
How does it work?
In simplistic terms, remoting in this scenario happens by proxy. The developer must create an interface class containing all properties and methods minus the actual code that will reside in each. The interface class must exist on both the client and server. Remember, this is only the public interface definition. The client will utilize the interface class to instantiate a proxy to the object locally. Via the proxy, anytime a property is referenced with a Get or Set statement or a method is called, .NET handles the communication to and from the client to the server over an http channel and the port designated by the developer.

GAC Util - Best practices

2008-02-07T04:54:00.001-08:00

clipped from blogs.msdn.com

You should use Windows Installer to install your application. Starting with version 2.0, Windows Installer has built-in functionality to install assemblies to the GAC - the MsiAssembly and MsiAssemblyName tables in particular. You can refer to this MSDN document for an overview of how to add assemblies to an MSI package and this MSDN document for a description of how to add Win32 assemblies to an MSI package. Therefore you should use this built-in functionality to handle GAC installation and uninstallation for you.

Register DLL to GAC - programmatically

2008-02-07T04:52:00.001-08:00

clipped from www.codeguru.com

The .NET Configuration Utility requires administrative privileges to add an assembly to the GAC, and the GACUTIL is available only when the Framework SDK is installed. A machine with the .NET Framework but without the SDK won't have GACUTIL. Based on the advice in the MSDN article, a developer would have to make every potential user of a VSTO application into a local administrator (at least temporarily) or get the Framework SDK installed so GACUTIL can be called from an MSI package, which runs under the privileges of an administrator. Thankfully, the C++ developer has a third option: programmatically modifying the GAC with the Fusion APIs.

typedef HRESULT (__stdcall *CreateAsmCache)(IAssemblyCache
   **ppAsmCache, DWORD dwReserved);
HMODULE g_FusionDll;
CreateAsmCache g_pfnCreateAssemblyCache;

Google Docs

2008-02-06T22:45:00.001-08:00

clipped from www.youtube.com

Google Docs in Plain English

You can share this video in three ways:

Db Mirroring

2008-02-06T02:20:00.001-08:00

clipped from www.microsoft.com

How do users think?

2008-02-01T02:26:00.001-08:00

clipped from www.smashingmagazine.com

1. Don’t make users think

How do users think?

Create / Edit Site

2008-01-27T10:27:00.001-08:00

clipped from www.dotnet247.com

namespace IIS6
{
public class SiteCreator {
static void Main() {
// path to root of virtual directory, is not created by creating the
site!!
string rootVirtualDir = "c:\\NewSite";
string site = "MySpecialSite";
ConnectionOptions oConn = new ConnectionOptions();
oConn.Username = "webAdministrator";
oConn.Password = "adminpwd";
ManagementPath myPath = new ManagementPath();
myPath.Server = "HostNameOfWebserver";
myPath.NamespacePath = @"root\MicrosoftIISv2";
myPath.RelativePath = "IIsWebService.Name='W3SVC'";
ManagementScope scope = new ManagementScope(myPath, oConn);
using (ManagementObject nac = new ManagementObject(scope, myPath, null))
{
// create a ServerBinding WMI object
ManagementObject Bindings = CreateInstance(oConn);

WMI Properties

2008-01-27T05:39:00.001-08:00

clipped from www.csharphelp.com

IIsWebServiceSetting the IIS itself. This includes ASP settings, logging settings, authentication
settings, etc.

IIsApplicationPoolSetting application pools (IIS 6.x specific). For each you can see the user
credentials
used, application pool recycling policy information, etc.

IIsWebServerSetting
IIsWebVirtualDirSetting
Win32_Battery
Win32_BIOS
Win32_ComputerSystem owner, the hardware model and manufacturer, etc.

Win32_ComputerSystemProduct hardware system including the serial number, name, vendor, version,
etc.

Win32_DiskPartition
Returns the created disk partitions (a
disk partition may span multiple physical disks and contain multiple logical
disks). For each you find the size, block size, number of blocks, etc.

Win32_Environment each you can see the name, value, if it is a system or user defined
variable, etc.

WMI to config IIS

2008-01-27T03:47:00.001-08:00

clipped from blogs.msdn.com

<?xml version="1.0" encoding="utf-8" ?>
<webSettings>
     <webSites>
             <webSite ServerId="1234" ServerComment="My Test WebSite" PathOfDefaultVroot="c:\inetpub\wwwroot\Test" >
                    <siteSettings>
                          <propertyList>
                                 <property name="AllowKeepAlive" value="True"/>
                                 <property name="ConnectionTimeout" value="90"/>
                          </propertyList>
                         <serverBinding Hostname="" IP="" Port="80"/>
                   </siteSettings>
            </webSite>
     </webSites>
</webSettings>

Many of us use scripts to setup our web servers, a lot of the work is boilerplate - create sites, vroots.... To ease maintanence work over the last year i've moved to a data driven approach to setting up web sites. I use an XML configuration file to describe the web site and a driver program that uses WMI to configure IIS based on the XML. Some of the benefits of this are : you only need to make fixes to the single driver program

C# WMI to configure VirtualDirectory

2008-01-27T02:23:00.001-08:00

clipped from channel9.msdn.com

' Add a virtual directory to the site. This requires SpawnInstance().
Set vdirClassObj = providerObj.Get("IIsWebDirectorySetting")
Set vdirObj = vdirClassObj.SpawnInstance_()
vdirObj.Name = strNewVdir
vdirObj.AuthFlags = 5 ' AuthNTLM + AuthAnonymous
vdirObj.EnableDefaultDoc = True
vdirObj.DirBrowseFlags = &H4000003E ' date, time, size, extension, longdate

vdirObj.AccessFlags = 513 ' read, script

' Save the new settings to the metabase

vdirObj.Put_()

ManagementClass clsIIsWebDirectorySetting = new ManagementClass(scope, new ManagementPath("IIsWebDirectorySetting"), null);
ManagementObject dir = clsIIsWebDirectorySetting.CreateInstance();
dir.Properties["Name"].Value = "W3SVC/" + account + "/ROOT" + path;

dir.Put()

Unit Testing - extensions

2008-01-25T01:49:00.001-08:00

clipped from jburtch.spaces.live.com

I know a bunch of people have not been too enthusiastic about the unit testing features built into VSTS. Some people have become infatuated to many of the features of mbUnit. They are cool. But I like VSTS because of the built in code coverage capabilities and the integration with TFS.

1. Rollback. Yes...inspired by Roy, I created a Rollback attribute that wraps the annotated test in a System.Transaction that always gets rolled back. Usage

[TestMethod]
[Rollback]
public void PerformSomeDatabaseTests()
{
//Make some databasebase calls...
}

Bug with singleton and BindingList

2008-01-23T10:32:00.001-08:00

clipped from www.codeprof.com

Data.Instance.Projects.ListChanged+=

I have a Class, Data. This class contains several BindingLists, implemented via encapsulation. This class is a singleton, which is implemented on the following manner:

Bind - Part2

2008-01-23T09:17:00.001-08:00

clipped from msdn2.microsoft.com

BindingList<T>

BindingList<T> is a generic implementation of the IBindingList interface (from the System.ComponentModel namespace), the minimum interface required by the data binding infrastructure for list data sources to support editing. While IList is the minimum interface required to implement a binding-capable list data source, it doesn't provide editing capability, which is fine when bound to a non-editable control like ListBox. When bound to a control with full editing support like DataGridView, however, the ability to edit in a list data source is a must, as well as support for features like sorting, searching, indexing, and change notification. IBindingList derives from IList and extends to provide all of this support:

Bind Business Object to Datagridview

2008-01-23T09:13:00.001-08:00

clipped from msdn2.microsoft.com

So, to build the UI, we need to turn a single Word type into a list data source, which should then be displayed through a suitable list or data grid style control. In this situation, I think the DataGridView control is a great candidate. Next, we need to ensure any edits are synchronized between the DataGridView and list data source. Because I'm anticipating a lot of data, a VCR-style control is needed to simplify navigation. Any such control should ensure that currency (current list position) is synchronized between it and the DataGridView as navigation occurs in either.

BindingList

2008-01-23T09:04:00.001-08:00

clipped from www.gavaghan.org

After reading Bil Simser’s discussion on DataTable vs. BindingList<T>, I’m convinced that BindingList<T> is the way to go for representing domain objects in C#. However, effective use of BindingList does require a certain amount of planning and forethought on the part of the developer. There are a number of things you can do to increase your chances of success with BindingList, but this post is about having your list items implement INotifyPropertyChanged in order to propagate change events through the BindingList itself.

using System.ComponentModel;

public class Account : INotifyPropertyChanged

{

private decimal balance;

public event PropertyChangedEventHandler PropertyChanged;

public decimal Balance

{

get

{

return balance;

}

set

{

balance = value;

if (PropertyChanged != null)

{

PropertyChanged( this, new PropertyChangedEventArgs(”Balance”) );

}

}

}

}

Class extensions, statci method

2008-01-15T00:14:00.001-08:00

clipped from blogs.msdn.com

After the declaration of C# 3.0 I went ahead and installed the PDC bits. After reading through the language spec. I was very very very unhappy. I mean we were just getting excited over C#2.0 supporting generics, anonymous mehtods, Nullable types and then suddenly someone ruins all the fun by showing us C#3.0. C#2.0 already appears stale. Some great blogs on this are from Cyrus and Matt Warren

List<string> first = new List<string>();
first.AddRange (new string[] {"Hello", "how"});
first.Print();

Paste Special Catch Events

2008-01-13T06:33:00.001-08:00

clipped from www.dailydoseofexcel.com

You know the situation: You have carefully setup a workbook with intricate Validation schemes. But then along comes your user and he copies and pastes at will. Result: Validation zapped, workbook structure violated.

What to do? The only way I find to be reliable is to catch all possible paste operations. But this isn’t very easy, since there are a zilion ways to paste.

I have put together a sample workbook and an explanatory article on how one could go about protecting a workbook by intercepting paste operations.

Let me know what you think!!

excel > hook on pressed keys

2008-01-11T23:37:00.001-08:00

Ctrl+C , Ctrl+V , Ctrl+ X
Copy, Paste, Paste special

clipped from www.experts-exchange.com

Have you considered using the Application.OnKey method? You can intercept just about any key press possible by using this method. Here is some of the description from Excel help:

Procedure Optional Variant. A string indicating the name of the procedure to be run. If Procedure is "" (empty text), nothing happens when Key is pressed. This form of OnKey changes the normal result of keystrokes in Microsoft Excel. If Procedure is omitted, Key reverts to its normal result in Microsoft Excel, and any special key assignments made with previous OnKey methods are cleared.

Remarks
The Key argument can specify any single key combined with ALT, CTRL, or SHIFT, or any combination of these keys. Each key is represented by one or more characters, such as "a" for the character a, or "{ENTER}" for the ENTER key.

Runs a specified procedure when a particular key or key combination is pressed.

expression.OnKey(Key, Procedure)

expression Required. An expression that returns an Application object.

Events and windows messages in Excel

2008-01-11T23:27:00.001-08:00

clipped from www.experts-exchange.com

roos01, after reading about my abundance of memory do you think that is really worth doing? My declarations are as follows:

Module 2:
' KEYBOARD INPUT API DECLARES
Private Declare Sub keybd_event Lib "User32.dll" (ByVal bVk As Byte, ByVal bScan As Byte, ByVal dwFlags As Long, ByVal dwExtraInfo As Long)
''^Presses any given key
Private Const KEYEVENTF_KEYUP As Integer = &H2
Private Const VK_BACKSPACE As Integer = 8
Private Const VK_TAB As Integer = 9
Private Const VK_SHIFT As Integer = 16
Private Const VK_CONTROL As Integer = 17
Private Const VK_ALT As Integer = 18
Private Const VK_SUBTRACT As Integer = 109
Private Const VK_DEMICAL As Integer = 110
Private Const VK_F5 As Integer = 116
Private Const VK_ACCENT As Integer = 192

Speed up VBA code tips

2008-01-11T08:08:00.001-08:00

clipped from www.ozgrid.com

Sub StopAllEvents()
	Application.EnableEvents = False
	'Your code here.
	Application.EnableEvents = True
End Sub

Future gmail improvements

2008-01-06T06:01:00.001-08:00

New chat
All cached ... wow

clipped from www.builderau.com.au

Gmail: Past, present, and future

ZDNet Executive Editor David Berlind interviews Keith Coleman, Google's Gmail product manager, about the current status of Gmail and the future of this popular Google app. Coleman also covers other Gmail issues, including the rebuild of the Javascript engine and how strongly Google feels about users' data.

Data Context - blog

2008-01-05T03:36:00.001-08:00

clipped from blogs.msdn.com

The Customer and Order Entity Classes

In the previous post we dragged the Customers class from the Northwnd database onto the LINQ Object Relational Designer. A number of things happened when we did this:

A class called Customer was created. This class maps directly to the Customers table in the Northwnd database.
The DataContext was modified. I will describe how it was modified later in this post.

When a developer accesses an instance of the Customer class, it is almost as if they have direct access to the Customer table in the database. Figure 1 shows the fields of the Customer table as they appear in the Object Relational Designer.

List and delegates

2007-12-27T00:59:00.001-08:00

clipped from weblogs.asp.net

System.Text.StringBuilder sb = new System.Text.StringBuilder();

   31             sb.Append("<h1>List As Is</h1> using ForEach<br/> ");

   32             sb.Append("<br/><ul>");

   33             ninjas.ForEach(delegate(Ninja n)

   34             {

   35                 sb.Append(String.Format("<li>{0}, ({1})</li>", n._name, n._age));

   36             });

   37             sb.Append("</ul><br/>");

   38

   39             ///////////////////////////////////////

   40             sb.Append("<h1>Age is greater or equal to 0</h1>using FindAll,and foreach<br/> ");

   41             sb.Append("<br/><ul>");

   42             List<Ninja> thoseAlive = ninjas.FindAll(delegate(Ninja n)

   43             {

   44                 return n._age >= 0;

   45             });

   46             thoseAlive.ForEach(delegate(Ninja n)

   47             {

   48                 sb.Append(String.Format("<li>{0}, ({1})</li>", n._name, n._age));

   49             });

   50             sb.Append("</ul><br/>");

Async upload file

2007-12-16T09:54:00.001-08:00

clipped from jeffzon.net

Let UpdatePanel support file uploading (1): Let's Get Started

by Jeffrey Zhao
30. March 2007 11:15

UpdatePanel cannot be used to upload files in ajax style from the very beginning. Eilon Lipton has written a blog post to explain the reason of that. As the post said, the two workarounds to resolve the problem are:

Have a dedicated "Upload" button that does a regular postback instead of an async postback. You can achieve this using several techniques: Have the button be outside all UpdatePanels; have the button be the target of an UpdatePanel's PostBackTrigger; or call ScriptManager.RegisterPostBackControl() on it.

Have a dedicated file upload page that doesn't have any UpdatePanels. Many web sites already do this anyway.

C# Microsoft have added features that makes the language just a little bit dynamic

2007-12-15T02:51:00.001-08:00

clipped from forum.cornerstone.se

Dictionary<string, string> dic = new Dictionary<string, string>()
.Init(new {
Key1 = "val1",
Key2 = "val3"
});

For version 3.0 of C# Microsoft have added features that makes the language just a little bit dynamic but still strongly typed. One of this feature is collection initializers for lists and dictionaries like we initialized arrays on earlier versions:

ASP.NET MVC has arrived

2007-12-10T04:09:00.001-08:00

clipped from blogs.msdn.com

Ok, ok, it took us a little longer than we expected, but we finally got the ASP.NET 3.5 Extension Preview posted! This is the release with all the MVC goodness you have been hearing about as well as some very cool stuff such as Dynamic Data controls which makes building data driven web applications a breeze, AJAX history support, ADO.NET Data Services (aka Astoria), the ADO.NET Entity Framework and updated ASP.NET support for Silverlight.

Dynamic Query Reflection within Linq

2007-12-07T03:04:00.001-08:00

clipped from www.west-wind.com

As I suggested in my comment on the last blog post - read the docs and samples...and failing that ask a question on the LINQ forums: http://forums.microsoft.com/MSDN/ShowForum.aspx?ForumID=123&SiteID=1

Even Anders hangs out on that forum - so you will get help if you ask a question on it. ;-)

Daniel Moth has a good pointer to some LINQ samples you can use: http://www.danielmoth.com/Blog/2007/08/linq-samples.html One of these LINQ samples is called "DynamicQuery", and it provides a useful library that enables you to write dynamic LINQ expressions that enable you to accomplish what you are after above.

For example, you could write:

var query =
db.Customers.
Where("City = @0 and Orders.Count >= @1", "London", 10).
OrderBy("CompanyName").
Select("new(CompanyName as Name, Phone)");

Dynamic Query Reflection within Linq

2007-12-07T02:57:00.001-08:00

clipped from www.west-wind.com

As I suggested in my comment on the last blog post - read the docs and samples...and failing that ask a question on the LINQ forums: http://forums.microsoft.com/MSDN/ShowForum.aspx?ForumID=123&SiteID=1

Even Anders hangs out on that forum - so you will get help if you ask a question on it. ;-)

Daniel Moth has a good pointer to some LINQ samples you can use: http://www.danielmoth.com/Blog/2007/08/linq-samples.html One of these LINQ samples is called "DynamicQuery", and it provides a useful library that enables you to write dynamic LINQ expressions that enable you to accomplish what you are after above.

For example, you could write:

var query =
db.Customers.
Where("City = @0 and Orders.Count >= @1", "London", 10).
OrderBy("CompanyName").
Select("new(CompanyName as Name, Phone)");

Lambda Expression for C# 3.0

2007-12-07T02:51:00.001-08:00

clipped from blogs.clearscreen.com

"A lambda is an inline expression or statement block with a concise syntax that can be used in C# 3.0 and later wherever a delegate type is expected" . In a certain way we can consider Lambda Expressions as an evolution of the anonymous methods.

Look the examples below, at first sight the syntax looks very weird but when you know how they are built and you get used, you will see that it's extremely easy.

x => x + 1

x => { return x + 1; }

(x, y) => x == y

(int x, int y) => x * y

() => ExecuteAnyMethod();

Maybe you already noticed that a lambda consist of a list of input parameters, the operator "=>" (goes to) and a expression or statement. In the form of:

(input parameters) => Expression or Statement.

The list of parameters is optional, and you don't need to specify the types of the parameters in the cases where the type can be inferred. Parenthesis are also optional when we only specify one parameter.

nice tutorial - keep in mind

2007-12-04T07:51:00.001-08:00

clipped from www.java2s.com

1. Language Basics
2. Data Type
3. Operator
4. Statement
5. String
6. struct
7. Class
8. Operator Overload
9. delegate
10. Attribute
11. Data Structure
12. Assembly
13. Date Time
14. Development
15. File Directory Stream
16. Preprocessing Directives
17. Regular Expression
18. Generic
19. Reflection
20. Thread
21. I18N Internationalization
22. GUI Windows Forms
23. 2D
24. Design Patterns
25. Windows
26. XML
27. ADO.Net
28. Network
29. Directory Services
30. Security
31. unsafe

.NET quiz for geeks

2007-12-01T12:51:00.001-08:00

clipped from www.ayende.com

Scot Hanselman has a list of question that you would interview a .Net candidate with. Here are my answers (without using MSDN/Google/Help/etc, just my head):
There are 102 questions, I couldn't answer 20 of them (19.6%), (you judge if I was correct or not).
I'm weak in ASP.Net & Xml, but that is no surprise to me.

diving into LINQ

2007-11-30T06:33:00.001-08:00

clipped from www.code-magazine.com

In my last column I talked about LINQ as the key feature in .NET 3.5. ASP.NET 3.5 is not going to see a whole bunch of new features only just a few new controls and the roll up of some of the slip stream features like Microsoft ASP.NET AJAX and IIS 7 support directly rolled into the .NET framework. The big news in ASP.NET 3.5, and .NET 3.5 in general, is LINQ and its related new features. In the last column I introduced some key features of LINQ and why I think it’s easily the most important feature in .NET 3.5. This time I’ll take a closer look at the data specific LINQ features in LINQ to SQL.

Unwrapping LINQ to SQL

clean CSS separation

2007-11-30T01:25:00.001-08:00

clipped from weblogs.asp.net

VS 2008 Web Designer and CSS Support

One of the big features that web developers will quickly discover with VS 2008 is its dramatically improved HTML designer, and the rich CSS support it brings.

VS 2008 now uses the same web designer that ships with Microsoft's new Expression Web product. In addition to providing lots of new functionality, you'll also find that this web designer is much faster than the VS 2005 version (which was based on a much older code base).

VS 2008 supports a new tool window inside the IDE called "Manage Styles". This shows all of the CSS stylesheets, and their corresponding rules, for the page you are currently editing. It can be used both when you are in design-view, as well as when you are in source view on a page:

MVC in ASP.NET part 2

2007-11-28T13:11:00.001-08:00

clipped from weblogs.asp.net

The ASP.NET MVC Framework enables you to use any data access pattern or framework you want in order to retrieve and manage your models. If you want to use ADO.NET DataSets/DataReaders (or abstractions built on top of them) you can. If you prefer to use an object relational mapper (ORM) like NHibernate, LLBLGen, WilsonORMapper, LINQ to SQL/LINQ to Entities you can absolutely use those as well.

For our e-commerce sample application I'm going to use the built-in LINQ to SQL ORM shipped in .NET 3.5 and VS 2008. You can learn more about LINQ to SQL from my ongoing blog tutorial series that covers it (in particular make sure to check out my Part1, Part2, Part3 and Part4 posts).

Mapping URL Parameters to Controller Action Methods

MVC in ASP.NET

2007-11-28T13:02:00.001-08:00

clipped from weblogs.asp.net

In most web frameworks (ASP, PHP, JSP, ASP.NET WebForms, etc), incoming URLs typically map to template files stored on disk. For example, a "/Products.aspx" or "/Products.php" URL typically has an underlying Products.aspx or Products.php template file on disk that handles processing it. When a http request for a web application comes into the web server, the web framework runs code specified by the template file on disk, and this code then owns handling the processing of the request. Often this code uses the HTML markup within the Products.aspx or Products.php file to help with generating the response sent back to the client.

Avoid Loops in Excel

2007-11-28T07:03:00.001-08:00

clipped from www.ozgrid.com

To put it bluntly I very often avoid Loops, they are far too
slow in many cases. A common mistake we all make when first learning VBA is to use Loops when we really shouldn't. Take the simple example below for instance. It Loops through a range and places the word "Blank" in each blank cell within a
used range, i.e it assumes the last occupied cell is D500

Sub WrongWay()
Dim Bcell As Range
   For Each Bcell In Range("A1:D500")
	If IsEmpty(Bcell) Then Bcell = "Blank"
   Next Bcell
End Sub

Now compare the above code to this one:

Sub RightWay()
    If WorksheetFunction.CountA(Range("A1:D500")) = 0 Then
       MsgBox "All cells are empty", vbOKOnly, "OzGrid.com"
       Exit Sub
    End If
    On Error Resume Next
    Range("A1:D500").SpecialCells(xlCellTypeBlanks) = "Blank"
    On Error GoTo 0
End Sub

LINQ need primary key

2007-11-26T12:55:00.001-08:00

what the fuck??

clipped from blog.benhall.me.uk

Type: System.InvalidOperationException
Source: System.Data.Linq
TargetSite: Void Attach(T)
HelpLink: null
Stack: at System.Data.Linq.Table`1.Attach(T item)
at SqlServer.SqlContentProvider.SaveDocument(Document document) in E:\My Documents\Visual Studio Codename Orcas\Projects\SqlServer\SqlContentProvider.cs:line 53
at SimpleWiki.DAL.Tests.DocumentTests.TestInsertingDocument() in E:\My Documents\Visual Studio Codename Orcas\Projects\Tests\DocumentTests.cs:line 28

I thought I had everything correctly, however I forgot to set a primary key in the table, hence Linq was unable to do anything with the object. So, lesson for the day Linq must have a Primary key for the table :).

convert with generics

2007-11-25T09:03:00.001-08:00

clipped from nayyeri.net

Who has said we should write a simple code?!! I used List<T>.ConvertAll() function to get a List<String> from a List<Double> then converted my List<String> to an Array of Strings.

List<T>.ConvertAll() method is a new .NET 2.0 Generic method which gets a System.Converter object and converts each element in a List<T> from type T to the outgoing type. It seems this method is using a predicate but actually it doesn't do this.

public String Points

{

    get

    {

        return String.Join(" | ",

            (String[])this.myStudent.Points.ConvertAll

            (new Converter<Double, String>(delegate(Double value)

            {

                return Convert.ToString(value);

            }

            )).ToArray());

    }

}

BBuilder - Open source batch builder

2007-11-24T04:22:00.001-08:00

clipped from www.codeproject.com

Introduction

One day my friend told me he needed to change his way of releasing builds. It meant he had to fix a batch to compile and publish several products. Such a process can be tedious since it has to be very reliable and you have to remember all the required DOS commands. Each step of a batch is in fact a command that can be accomplished in pure DOS or executing external executable files. So I thought it would be cool to make a batch editor in the following way:

Choose a command from a toolbox

Support re-ordering

Save it to disk for further use

Visualize all commands in a simple way

Enable adding custom tools as plug-ins

Test the batch before it goes somewhere (Scheduled Tasks) with optimizations

Background

GridView DataBind LINQ to ASP.NET controls

2007-11-24T02:06:00.001-08:00

Cool!

clipped from weblogs.asp.net

Over the last few weeks I've been writing a series of blog posts that cover LINQ to SQL. LINQ to SQL is a built-in O/RM (object relational mapper) that ships in the .NET Framework 3.5 release, and which enables you to easily model relational databases using .NET classes. You can use LINQ expressions to query the database with them, as well as update/insert/delete data.

Below are the first four parts of my LINQ to SQL series:

Part 1: Introduction to LINQ to SQL
Part 2: Defining our Data Model Classes
Part 3: Querying our Database
Part 4: Updating our Database

In today's blog post I'll cover the new <asp:LinqDataSource> control that is shipping as part of ASP.NET in the upcoming .NET 3.5 release. This control is a new datasource control for ASP.NET (like the ObjectDataSource and SQLDataSource controls that shipped with ASP.NET 2.0) which makes declaratively binding ASP.NET UI controls to LINQ to SQL data models super easy.

Sample Application We'll be Building

ASP.NET MVC

2007-11-23T01:14:00.001-08:00

Was it inspired by Django???

clipped from weblogs.asp.net

#

re: ASP.NET MVC Framework

Monday, October 15, 2007 3:22 AM
by
Brandon Bloom

I am a C# junkie, but I use Django for web development because ASP.net places far too much focus on the designer. With Django, I find an artist to do the CSS file and I just make a bunch of divs in the template.

Looks like you guys nailed it with this. Maybe I'll starting using ASP.net when this is available. Awesome stuff :-)

Tuning Performance - LINQ to SQL

2007-11-17T10:38:00.001-08:00

clipped from davidhayden.com

LINQ To SQL - Lazy Loading Properties and Specifying PreFetch When Needed - Sweet Query and Performance Control

This is another post in a series of posts on LINQ To SQL in how I think I have discovered a potential performance problem of LINQ To SQL only to find an elegant solution to the problem using LINQ To SQL. If you haven't been reading along with the discovery, here are a few previous posts on LINQ To SQL in this discussion of performance and query tuning:

LinqDataSource - High Performance Queries Using DataLoadOptions - Avoiding Database Roundtrips

LINQ to SQL - Performance Tradeoffs: Less Database Roundtrips but Duplicated Data in Each Row??

LINQ Overview

2007-11-17T01:32:00.001-08:00

clipped from www.hookedonlinq.com

LINQ to SQL allows .NET developers to write “queries” in their .NET language of choice to retrieve and manipulate data from a SQL Server database. In a general sense, LINQ to SQL allows us to create SQL queries in our preferred .NET language syntax and work with a strongly types collection of objects as a return result. We can make changes to these objects then save changes back to the database.

HookedOnLINQ db = 
     new HookedOnLINQ("Data Source=(local);Initial Catalog=HookedOnLINQ"); 
var q = from c in db.Contact
           where c.DateOfBirth.AddYears(35) > DateTime.Now
           orderby c.DateOfBirth descending
           select c;
foreach(var c in q)
       Console.WriteLine("{0} {1} b.{2}",
                   c.FirstName.Trim(),
                   c.LastName.Trim(),c.DateOfBirth.ToString("dd-MMM-yyyy"));
Output:
Mack Kamph b.17-Sep-1977
Armando Valdes b.09-Dec-1973

Local database sdf in VS2008

2007-11-16T08:34:00.001-08:00

Is this the new way to cache and synchronized data?

clipped from channel9.msdn.com

In this interview Milind Lele, Program Manager on the Visual Basic Team, shows us his favorite features - the new Data Synchronization designer in Visual Studio 2008 and how the sync services for ADO.NET work to support occasionally connected scenarios. He shows us how to set up a local database cache using SQL Compact Edition and how to use it to store read-only data caches as well as how to add the code to support two-way synchronization.

Introduction to LINQ

2007-11-16T07:29:00.001-08:00

clipped from weblogs.asp.net

What Is LINQ to SQL?

LINQ to SQL is an O/RM (object relational mapping) implementation that ships in the .NET Framework "Orcas" release, and which allows you to model a relational database using .NET classes. You can then query the database using LINQ, as well as update/insert/delete data from it.

LINQ to SQL fully supports transactions, views, and stored procedures. It also provides an easy way to integrate data validation and business logic rules into your data model.

Modeling Databases Using LINQ to SQL:

Visual Studio "Orcas" ships with a LINQ to SQL designer that provides an easy way to model and visualize a database as a LINQ to SQL object model. My next blog post will cover in more depth how to use this designer (you can also watch this video I made in January to see me build a LINQ to SQL model from scratch using it).

Using the LINQ to SQL designer I can easily create a representation of the sample "Northwind" database like below:

WPF. Draggable objects and simple shape connectors.

2007-11-16T06:39:00.001-08:00

WPF. Draggable objects and simple shape connectors.

clipped from dvuyka.spaces.live.com

Each shape can possibly be connected to any number of another shapes. For hanling the position of each connector while dragging the object we need to somehow control the start and end points of the line element connected to two shapes. So it becomes obvious that each shape should contain the list of line's start and end points separately so that line positioning and length can be easily updated by the shape itself or outter code.

Json.net

2007-11-15T04:53:00.001-08:00

use JSON instead XML

clipped from james.newtonking.com

Json.NET

09 September 2007
Filed under: Json.NET, Project

The Json.NET library makes working with JavaScript and JSON formatted data in .NET simple. Quickly read and write JSON using the JsonReader and JsonWriter or serialize your .NET objects with a single method call using the JsonSerializer.
Json.NET CodePlex Project
Json.NET Download

Product product = new Product();

product.Name = "Apple";

product.Expiry = new DateTime(2008, 12, 28);

product.Price = 3.99M;

product.Sizes = new string[] { "Small", "Medium", "Large" };

string json = JavaScriptConvert.SerializeObject(product);

//{

//  "Name": "Apple",

//  "Expiry": new Date(1230422400000),

//  "Price": 3.99,

//  "Sizes": [

//    "Small",

//    "Medium",

//    "Large"

//  ]

//}

Product deserializedProduct = JavaScriptConvert.DeserializeObject<Product>(json);

linq book

2007-11-12T12:40:00.001-08:00

clipped from www.manning.com

Part I - Getting started

1. Introducing LINQ - FREE

2. C# and VB.NET language enhancements - AVAILABLE

3. LINQ building blocks - AVAILABLE

Part II - Querying objects in memory

4. Getting familiar with LINQ to Objects - AVAILABLE

5. Working with LINQ and DataSets - AVAILABLE

6. Beyond basic in-memory queries - AVAILABLE

Part III - Mapping objects to relational databases

7. Getting started with LINQ to SQL - AVAILABLE

8. Peeking under the covers - AVAILABLE

9. Advanced LINQ to SQL features - AVAILABLE

Open Source Batch Editor

2007-11-12T12:30:00.001-08:00

BBuilder on code project

clipped from www.codeproject.com

Points of Interest

Reflection for a flexible application

Factory and Singleton design patterns

IComparer implementation to generate a custom order

Creating a windows application in .NET with a professional look like Outlook. With a powerful grid that overrides the Rendering

Spawn process for Shell : Redirecting input/output

Make a responsive UI with Background worker

Deploying the application with a Setup project, with custom file type and icons

ORM by Urielka

2007-10-26T10:52:00.001-07:00

clipped from www.urielkatz.com

transactions - used inside GearsORM itself

self relations(i.e. a relation to the same table/model) - very useful when working with Tree-like structures in the database

count method - so now u can do Person.count() instead of Person.select().toArray().length

The most important update in this version is of course transaction support.
SQLite is known for really bad write preformence when not working with transactions.
While developing transaction support for GearsORM i had to write a test,in that test it execute 100 inserts and 100 updates,this test take about 15 seconds for the inserts and about 10 seconds for the updates without transactions,when using transactions for each set it takes about 377ms for the inserts and 200ms for the updates that is about 39 times faster!

SQL : coalesce to avoid OR in optional parameters

2007-10-21T02:06:00.001-07:00

SQL : coalesce to avoid OR in optional parameters

clipped from weblogs.sqlteam.com

Next, we have a string comparison based on product code. These also can be very efficiently rewritten by using LIKE. Normally, LIKE is much slower than using equals, but if you do not use any wild cards and it allows you to eliminate an "OR" in your WHERE clause, it may actually be more efficient:

    select *
    from Data
    where
        Date between coalesce(@MinDate, '1/1/1900') and coalesce(@MaxDate, '12/31/2999') and
        Amount between coalesce(@MinAmount,-999999999) and coalesce(@MaxAmount,999999999) and
        ProductCode like coalesce(@ProductCode,'%') and ...

How to send email using Gmail SMTP - .NET 2.0

2007-09-30T05:25:00.001-07:00

Read this article from code project.

clipped from www.codeproject.com

//Builed The MSG
System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();
msg.To.Add("reciver@gmail.com");
msg.To.Add("another.reciver@yahoo.com");
msg.From = new MailAddress("dummy@gmail.com", "One Ghost",System.Text.Encoding.UTF8);
msg.Subject = "Test mail using .net2.0";
msg.SubjectEncoding = System.Text.Encoding.UTF8;
msg.Body = "This is my msg Body";
msg.BodyEncoding = System.Text.Encoding.UTF8;
msg.IsBodyHtml = false;
msg.Priority = MailPriority.High;
//Add the Creddentials
SmtpClient client = new SmtpClient();
client.Credentials = new System.Net.NetworkCredential("dummy@gmail.com", "SecretPass");
client.Port = 587;//or use 587
client.Host = "smtp.gmail.com";
client.EnableSsl = true;
client.SendCompleted += new SendCompletedEventHandler(client_SendCompleted);
object userState=msg;
try
{
//you can also call client.Send(msg)
client.SendAsync(msg, userState);
}
catch (System.Net.Mail.SmtpException ex)
{
MessageBox.Show(ex.Message, "Send Mail Error");
}

Peter blum :: ASP.NET controls

2007-09-27T11:55:00.001-07:00

clipped from www.peterblum.com

ASP.NET comes with validators: controls which detect and report errors
in data entry controls. So why do you need a replacement to them? Since ASP.NET
1.0 shipped, thousands of programmers have confronted numerous
limitations with the validators forcing them to write custom code,
hacks, or in some cases, drop a planned feature for their user interface.
Professional Validation And More introduces second generation validation that
is so feature rich, you rarely write any custom code, and it gives you
compelling ways to add polish to your user interface.

FTP scripts and utils

2007-09-26T03:59:00.001-07:00

clipped from www.experts-exchange.com

Rank: Genius

jkr:

Hm, there are several options:

A PERL class - http://search.cpan.org/~JDLEE/Net-FTP-Recursive-2.00/Recursive.pm

A PERL script - http://www.wellho.net/resources/ex.php4?item=p616/ftp2

'ftpcopy' in C - http://freshmeat.net/projects/ftpcopy/

A Windows based FTP program with recursive FTP - http://www.nmr.ucdavis.edu/NUTS_info/NUTS_info.html

A PowerShell CmdLet - http://geekswithblogs.net/Lance/archive/2006/12/07/100588.aspx

back to top

Add to Knowledgebase

View More Solutions

Bookmark:

GAC and references

2007-09-26T03:58:00.001-07:00

clipped from aspalliance.com
In Depth
First, I recommend you create a shared directory that's easy to remember where you will store all of the assemblies that you want to show up in the dialog. For this I chose `C:\Program Files\Microsoft.NET\Third-Party Tools` . Although we could argue about the semantics, I think this basically covers anything not included with the .NET Framework, and it is easy to remember and not user-specific. Next, you'll want to open up that friendly program, RegEdit, and go to `\\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\AssemblyFolders` and add a new key, calling it whatever you want. It really doesn't matter what you call this except for when you look it up in the registry. For consistency's sake though, I named it 'Third-Party Tools'. Then you simply need to change the (Default) string value to be the path to the directory you created for this purpose, which is, in my case, `C:\Program Files\Microsoft.NET\Third-Party Tools`. See the screen shot below for the complete picture.

FTP commandline with piped parameters

2007-09-25T07:58:00.001-07:00

How to run a batch job that connects to ftp with a piped input

clipped from www.experts-exchange.com

ftpfiles.bat

ftp -in serverName < ftpcommands.txt

===========

ftpcommands.txt

user UserName Password
binary
prompt
md test1
cd test1
md test2
quit

==================

run ftpfiles.bat

hec",)

Using memory wisely in .NET

2007-09-24T02:18:00.001-07:00

Using memory wisely in .NET

clipped from msdn.microsoft.com

The physical memory used by your application is an important performance metric. You should use the least possible memory and resources so there is as much as possible left over for other processes. This is not just about being a good citizen; your application will benefit from a lower memory footprint, and this benefit can be dramatic if your memory usage is big enough to consume available physical memory and push the machine into paging. But even if you are targeting high-end machines and paging is not your main threat, you should use memory wisely. The cost of memory management in the common language runtime (CLR) can be significant for applications that allocate memory carelessly.

Nero and Command Line Options

2007-09-23T23:59:00.001-07:00

That batch can be easily converted to pure AHK code.
Approach is to burn all files from one folder without using Nero's Frontend.

You've to change ...

a) the drivename
b) the drivespeed
c) the destination folder

Code has been taken from PC-Magazin 08/04 p. 141

clipped from www.autohotkey.com

Quote:

cls

@echo off

C:\Programme\Ahead\Nero\nerocmd.exe --write --drivename d --speed 16 --real --tao --disable_eject --underrun_prot --iso backup --create_iso_fs "F:\downloads\*.*" --recursive --close_session --verify --nero_log_timestamp --no_user_interaction

pause

exit

That batch can be easily converted to pure AHK code.

Approach is to burn all files from one folder without using Nero's Frontend.

You've to change ...

a) the drivename

b) the drivespeed

c) the destination folder

Code has been taken from PC-Magazin 08/04 p. 141

Optimizing Memory usage in .NET

2007-09-23T09:32:00.001-07:00

Read this article and make sure you follow the best practice steps..

clipped from msdn.microsoft.com

Allocate memory for the type that represents the resource.
Initialize the memory to set the initial state of the resource and to make the resource usable.
Use the resource by accessing the instance members of the type (repeat as necessary).
Tear down the state of the resource to clean up.
Free the memory.

Hashtable for Flex?

2007-08-29T12:16:00.001-07:00

clipped from livedocs.adobe.com

Package flash.utils
Class public dynamic class Dictionary
Inheritance Dictionary Object
The Dictionary class lets you create a dynamic collection of properties, which uses strict equality
(===) for key comparison. When an object is used as a key, the object's
identity is used to look up the object, and not the value returned from calling toString() on it.

The following statements show the relationship between a Dictionary object and a key object:
 var dict = new Dictionary();
 var obj = new Object();
 var key:Object = new Object();
 key.toString = function() { return "key" }
dict[key] = "Letters";
 obj["key"] = "Letters";
dict[key] == "Letters"; // true
 obj["key"] == "Letters"; // true 
 obj[key] == "Letters"; // true because key == "key" is true b/c key.toString == "key"
 dict["key"] == "Letters"; // false because "key" === key is false
 delete dict[key]; //removes the key
 
See also

=== (strict equality)

spyware setup.dll.vbs

2007-08-21T04:16:00.001-07:00

clipped from www.experts-exchange.com

This is more than likely spyware - run a full scan here: http://housecall.trendmicro.com/

Then download, install and update - then run full scans with:
http://www.superantispyware.com/download.html
http://www.safer-networking.org/en/download/
http://www.lavasoftusa.com/products/ad-aware_se_personal.php

submitting an article to codeproject

2007-08-21T03:44:00.001-07:00

clipped from www.codeproject.com

Contents

Introduction
Preparing Your Code
Submitting Your Code
Updating Your Code
The Article
The Zip File
Sourcecode Guide
Sample Project
Using Other's Work
Code Posted Elsewhere
The Code Project Submission Template

Run commandline and get its output / error streams - async

2007-08-21T03:33:00.001-07:00

clipped from www.codeproject.com

    void protected override void DoWork()()
    {
        // Start a new process for the cmd
        Process process = new Process();
        process.StartInfo.UseShellExecute = false;
        process.StartInfo.RedirectStandardOutput = true;
        process.StartInfo.RedirectStandardError = true;
        process.StartInfo.CreateNoWindow = true;
        process.StartInfo.FileName = FileName;
        process.StartInfo.Arguments = Arguments;
        process.StartInfo.WorkingDirectory = WorkingDirectory;
        process.Start();
// Invoke stdOut and stdErr readers - each
        // has its own thread to guarantee that they aren't
        // blocked by, or cause a block to, the actual
        // process running (or the gui).
        new MethodInvoker(ReadStdOut).BeginInvoke(null, null);
        new MethodInvoker(ReadStdErr).BeginInvoke(null, null);
// Wait for the process to end, or cancel it
        while (! process.HasExited)
        {
            Thread.Sleep(SleepTime); // sleep
            if (CancelRequested)
            {
                // Not a very nice way to end a process,
                // but effective.
                process.Kill();
                AcknowledgeCancel();
            }
        }
}

Spawn like the IDE

2007-08-20T23:35:00.001-07:00

clipped from www.codeproject.com

m_StopEvent.Reset();
string SpawnArgs = " -e " + m_StopEvent.Handle;
SpawnArgs += " \"" + Filename + "\" " + Arguments;
ProcessStartInfo Info = new ProcessStartInfo();
Info.FileName = "vcspawn.exe";
Info.Arguments = SpawnArgs;
Info.WorkingDirectory = "";
Info.CreateNoWindow = true;

Info.UseShellExecute = false;
Info.RedirectStandardOutput = true;
Info.RedirectStandardError = true;
Process Proc = Process.Start(Info);
m_StdOutReader = new RedirOutReader(Proc, Printer,
Proc.StandardOutput);
m_StdOutReader.Start();
m_StdErrReader = new RedirOutReader(Proc, Printer,
Proc.StandardError);
m_StdErrReader.Start();
m_StopWaiter = new ProcessStopWaiter(Proc, Printer,
Filename, DeleteAfterRun, m_StopEvent);
m_StopWaiter.Start();

A class than get output from cmd

2007-08-19T10:12:00.001-07:00

clipped from www.codeproject.com

This small class provides a very simple interface for running command line applications. It traps their standard output and error streams, and returns the output as a string. It provides method overloads to either return the errors in a second string, or to throw an exception if the error stream is non-empty.

Run command line in C#

2007-08-19T10:11:00.001-07:00

clipped from www.codeproject.com

    Process process = new Process();
    process.StartInfo.UseShellExecute = false;
    process.StartInfo.RedirectStandardOutput = true;
    process.StartInfo.RedirectStandardError = true;
    process.StartInfo.CreateNoWindow = true;
    process.StartInfo.FileName = FileName;
    process.StartInfo.Arguments = Arguments;
    process.StartInfo.WorkingDirectory = WorkingDirectory;
    process.Start();

How to build SQL Mobile Application

2007-08-05T22:32:00.000-07:00

It runs on PDA, and also some new phones ...

See the demo:
http://msdn.microsoft.com/seminar/shared/asp/viewInline.asp?url=/msdntv/episodes/en/20060831mobilerb/roryblyth01_demo.wmv〈=en&cr=US&WMPVer=11.0.5721.5145

Script#

2007-07-27T09:18:00.001-07:00

Writing javascript in C#

clipped from www.nikhilk.net

public class HelloWorldScriptlet : IScriptlet {
private Button _okButton;
private TextBox _nameTextBox;
private Label _helloLabel;
private XMLHttpRequest _request;
public void Start() {
_okButton = new Button(Document.GetElementById("okButton"));
_nameTextBox = new TextBox(Document.GetElementById("nameTextBox"));
_helloLabel = new Label(Document.GetElementById("helloLabel"));
_okButton.Click += new EventHandler(OnOKButtonClick);
}
private void OnOKButtonClick(object sender, EventArgs e) {
Callback completedCallback = new Callback(this.OnRequestComplete);
_request = new XMLHttpRequest();
_request.Onreadystatechange = Delegate.Unwrap(completedCallback);
_request.Open("GET", "Hello.axd?name=" + _nameTextBox.Text, /* async */ true);
_request.Send(null);
}
private void OnRequestComplete() {
if (_request.ReadyState == 4) {
_request.Onreadystatechange = null;
string greeting = _request.ResponseText;
_helloLabel.Text = greeting;
}
}

Export .NET to COM

2007-07-05T01:12:00.001-07:00

clipped from www.codeproject.com

using System;
using System.Runtime.InteropServices;
namespace Tester
{
	[Guid("D6F88E95-8A27-4ae6-B6DE-0542A0FC7039")]
	[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
	public interface _Numbers
	{
		[DispId(1)]
		int GetDay();
[DispId(2)]
		int GetMonth();
[DispId(3)]
		int GetYear();
[DispId(4)]
		int DayOfYear();
	}
[Guid("13FE32AD-4BF8-495f-AB4D-6C61BD463EA4")]
	[ClassInterface(ClassInterfaceType.None)]
	[ProgId("Tester.Numbers")]
	public class Numbers : _Numbers
	{
		public Numbers(){}
public int GetDay()
		{
			return(DateTime.Today.Day);
		}
public int GetMonth()
		{
			return(DateTime.Today.Month);
		}
public int GetYear()
		{
			return(DateTime.Today.Year);
		}
public int DayOfYear()
		{
			return(DateTime.Now.DayOfYear);
		}
	}
}

NHibernate SessionScope in ASP.NET

2007-07-04T13:08:00.001-07:00

Getting started with NHibernate and Log4Net

clipped from www.beansoftware.com

Going on with session

As in ADO.NET we use database connection class to create queries or data adapter,
in NHibernate we use session object which is responsible for maintaining connection to database,
loading data into domain objects, detecting changes to domain object and syncing domain state with database.
NHibernate requires at least one session to work. As NHibernate caches domain object instances to
ensure that single row is loaded only once from database multi-user work with one session object is questionable.
This issue differ usage of NHibernate in WinForms and ASP.NET application.
The general idea is to have only one session per request and this can be achieved
either by using singleton pattern on using HttpModule. We will use the last one.
To do this we need to create a custom class, make it inherit IHttpModule interface

<httpModules>
<add

type="Dummy.DAL.NHibernateHttpModule"
name="NHibernateHttpModule"/>
</httpModules>

high-performance, distributed memory object caching system

2007-07-04T10:10:00.001-07:00

clipped from www.danga.com

What is memcached?

memcached is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load.

Danga Interactive developed memcached to enhance the speed of LiveJournal.com, a site which was already doing 20 million+ dynamic page views per day for 1 million users with a bunch of webservers and a bunch of database servers. memcached dropped the database load to almost nothing, yielding faster page load times for users, better resource utilization, and faster access to the databases on a memcache miss.

Anonymous Class - C# 3.0

2007-07-04T10:06:00.001-07:00

clipped from www.strangelights.com

public class var { … }

public class Program

{

         public void MyMethod (var thing1, // does this mean var keyword or var class??

                   string thing2,

                   int thing3)

         {

                   var myString = “Hello, world”;

                            // var here means string (System.String)

                   var myInt = 1;

                            // var here means int (System.Int32)

                   var myVar = new var();

                            // var here means the class var

                   var myVar2 = null;

// does this mean var keyword or var class??

                   var myVar3;

// does this mean var keyword or var class??

}

}

private void Form1_Load(object sender, EventArgs e)

        {

            var methods = typeof(string).GetMethods();

            var methodDetails =

                from m in methods

                where ! m.IsStatic

                orderby m.Name

                select new {

                    Name = m.Name,

                    CallingConvention = m.CallingConvention,

                    Abstract = m.IsAbstract,

                    Virtual = m.IsVirtual,

                    Public = m.IsPublic

                } ;

            BindingSource bindingSource = new BindingSource();

            bindingSource.DataSource = methodDetails;

            dataGridView1.DataSource = bindingSource;

        }

How to expose .NET library to COM

2007-07-04T07:51:00.001-07:00

clipped from www.codeproject.com

The problem is, suppose that I have written a nice library, set of utility functions, etc.. running under the .NET Framework, however I want to use this under pre .NET development environments. For SimonS he would like to use VB6 specifically. Enter the COM Callable Wrapper (CCW) to create a proxy that will provide access to our functions through interface pointers. This can be accomplished through the use of those fun little attribute tags (I keep finding them more and more useful everyday) and with an interface of course.

CCW - COM Callable Wrapper

2007-07-04T07:04:00.001-07:00

clipped from msdn2.microsoft.com

COM Callable Wrapper

When a COM client calls a .NET object, the common language runtime creates the managed object and a COM callable wrapper (CCW) for the object. Unable to reference a .NET object directly, COM clients use the CCW as a proxy for the managed object.

The runtime creates exactly one CCW for a managed object, regardless of the number of COM clients requesting its services. As the following illustration shows, multiple COM clients can hold a reference to the CCW that exposes the INew interface. The CCW, in turn, holds a single reference to the managed object that implements the interface and is garbage collected. Both COM and .NET clients can make requests on the same managed object simultaneously.

Accessing .NET objects through COM callable wrapper

.NET-COM RCW Marshalling

2007-07-04T06:33:00.001-07:00

clipped from www.codeproject.com

.NET Marshalling

Thus .NET runtime automatically generates code to translate calls between managed code and unmanaged code. While transferring calls between these two codes, .NET handles the data type conversion also. This technique of automatically binding with the server data type to the client data type is known as marshalling. Marshaling occurs between managed heap and unmanaged heap. For example, Fig.4 shows a call from the .NET client to a COM component. This sample call passes a .NET string from the client. The RCW converts this .NET data type into the COM compatible data type. In this case COM compatible data type is BSTR. Thus the RCW converts the .NET string into COM compatible BSTR. This BSTR will be passed to the object and the required calls will be made. The results will be returned to back to the RCW. The RCW converts this COM compatible result to .NET native data type.

Interop marshalling
COM marshalling

.NET-COM Model

2007-07-04T06:04:00.001-07:00

clipped from www.codeproject.com

CCW will be created by the .NET utility RegAsm.exe. This reads metadata of the .NET component and generates the CCW. This tool will make a registry entry for the .NET components.

Fig.3 calling a .NET component from COM client

Generally COM client instantiates objects through its native method coCreateInstance. While interacting with .NET objects, the COM client creates .NET objects by coCreateInstance through CCW.

tags need to use serviced component

2007-07-04T05:46:00.001-07:00

clipped from www.codeproject.com

#import "mscorlib.tlb"
// Import the .NET component's typelibrary
#import "HelloDotNet.tlb" no_namespace

consuming .NET assembly as COM

2007-07-04T05:40:00.001-07:00

clipped from www.codeproject.com

In the latter half of this article, we took a dip into exploring how COM aware clients from the pre-.NET era could consume .NET components as if they were classic COM components. We saw how the CCW and the CLR facilitate this to happen seamlessly from a programming perspective. We briefly explored the possibilities of using attributes to emit metadata into .NET types so that the typelibrary generated could be tailored and fine-tuned to your requirements. We looked at how the exception handling mechanisms in the two worlds are correlative. We also discussed about how to go about receiving asynchronous event notifications from .NET components in unmanaged event sinks. Then, we turned our attention to the deployment options available and how to deploy .NET components as Shared assemblies. Lastly, we discussed the thread-neutral behavior of .NET components and saw how Context-agile .NET components are analogous to Classic COM 'Both' threaded components

Creating a template item with Wizard

2007-07-03T11:30:00.001-07:00

clipped from msdn2.microsoft.com

To create a custom template wizard

Create an assembly that implements the IWizard interface.

Install the assembly into the global assembly cache.

Create a project and use the Export Template wizard to create a template from the project.

Modify the template by adding a WizardExtension element in the .vstemplate file to link the template to the assembly that implements IWizard.

Create a new project using the custom wizard.

Breezback

UDP Client Server

UDP packet - Ask DNS

MIB Overview

SNMP Library Free Project (Mono)

IDataProvider - Implement Provider Model C#

tcp

TCP diagram

MSI parameter driven

Adding msi parameters in Visual Studio Setup Project

Simple SNMP

SNMP C#

C# Wmi change start mode of service

WMI Security Rights

WMI namespaces

Impersonate User in Windows Forms

Remoting Sample

Remoting Overview C#

GAC Util - Best practices

Register DLL to GAC - programmatically

Google Docs

You can share this video in three ways:

Db Mirroring

How do users think?

1. Don’t make users think

How do users think?

Create / Edit Site

WMI Properties

WMI to config IIS

C# WMI to configure VirtualDirectory

Unit Testing - extensions

Bug with singleton and BindingList

Bind - Part2

BindingList<T>

Bind Business Object to Datagridview

BindingList

Class extensions, statci method

Paste Special Catch Events

excel > hook on pressed keys

Events and windows messages in Excel

Speed up VBA code tips

Future gmail improvements

Gmail: Past, present, and future

Data Context - blog

The Customer and Order Entity Classes

List and delegates

Async upload file

Let UpdatePanel support file uploading (1): Let's Get Started

C# Microsoft have added features that makes the language just a little bit dynamic

ASP.NET MVC has arrived

Dynamic Query Reflection within Linq

Dynamic Query Reflection within Linq

Lambda Expression for C# 3.0

nice tutorial - keep in mind

.NET quiz for geeks

diving into LINQ

clean CSS separation

VS 2008 Web Designer and CSS Support

MVC in ASP.NET part 2

MVC in ASP.NET

Avoid Loops in Excel

LINQ need primary key

convert with generics

BBuilder - Open source batch builder

Introduction

Background

GridView DataBind LINQ to ASP.NET controls

ASP.NET MVC

# re: ASP.NET MVC Framework

Tuning Performance - LINQ to SQL

LINQ Overview

Local database sdf in VS2008

Introduction to LINQ

What Is LINQ to SQL?

Modeling Databases Using LINQ to SQL:

WPF. Draggable objects and simple shape connectors.

Json.net

Json.NET

linq book

Open Source Batch Editor

#

re: ASP.NET MVC Framework

What is `memcached`?