Could not load file or assembly 'System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependenc

This error ocuurs in server if you do not run the .msi installer on the server.

If you didn't, you need to copy the System.web.extension dll.

Solution to that extension conflict for system.Web.Extension

If in web.congig that extension conflicts ocuurs with dll of system.web.extension you can resolve it this stuff after system.web section completion.
<runtime>

<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">

<dependentAssembly>

<assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35"/>

<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>

</dependentAssembly>

<dependentAssembly>

<assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35"/>

<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>

</dependentAssembly>

</assemblyBinding>

</runtime>

great links

Making Web Services Accessible from Script

http://www.asp.net/ajax/documentation/live/tutorials/ExposingWebServicesToAJAXTutorial.aspx

Great Asp.net tutorial
http://www.beansoftware.com/ASP.NET%2DTutorials/

Different Date Format for sqlserver
http://www.sql-server-helper.com/tips/date-formats.aspx

Convert VB.NET to C# OR C# to VB.NET -
http://labs.developerfusion.co.uk/convert/vb-to-csharp.aspx

Job creation :-
http://www.databasedesign-resource.com/sql-server-jobs.html

Retriving and saving Image as binary:-
http://www.beansoftware.com/ASP.NET-Tutorials/Save-Read-Image-Database.aspx

Membership understanding :-
http://aspnet.4guysfromrolla.com/articles/101106-1.aspx

URL Rewriting:-
http://weblogs.asp.net/scottgu/archive/2007/02/26/tip-trick-url-rewriting-with-asp-net.aspx

DotNetNuke Installation:-
http://www.bestwebsites.co.nz/dotnetnuke/easy-dotnetnuke-installation-guide/

UrlRewriting:-
http://www.simple-talk.com/dotnet/asp.net/a-complete-url-rewriting-solution-for-asp.net-2.0/

Sys is undefined error message

if (typeof(Sys) !== "undefined")
Sys.Application.notifyScriptLoaded();

How to set up Membership using asp.net sql server registration tool

1) Member ship
aspnet_regsql -S [Server name] -U [username] -P [password] -A all -d [DataBaseName]

2) SQL Session State
aspnet_regsql -S [Server name] -U [username] -P [password] -ssadd -sstype c -d

3) DB Caching
aspnet_regsql.exe -S [Server name] -U [username] -P [password] -d -ed

Download Pdf/excel/ or any file

String type = "Application/msword";
if (File.Exists(Server.MapPath("Certificatepdf.pdf")))
{
Response.AppendHeader("content-disposition", "attachment; filename=" + "Certificatepdf.pdf");
if (type != "")
Response.ContentType = type;
Response.WriteFile(Server.MapPath("Certificatepdf.pdf"));
Response.End();
}

solution to fire click event through js in firefox not work

function fireClickEvent(control)
{
if (document.all)
{
control.fireEvent("onclick");
}
else
{
var clickEvent = window.document.createEvent("MouseEvent");
clickEvent.initEvent("click", false, true);
control.dispatchEvent(clickEvent);
}
}