Selected Index Changed Event Problem in ASP.net

If you are not using AJAX Check that the DropDown List Should be enabled with postback=true for selected index changed event

Coming to me,
I had a problem of using Dropdown List With AJAX

System.ArgumentException: Keyword not supported: 'provider'.

I got this error for the first time i am using SQLServer database with my VS 2008.

I done every thing correctly but still i got this.

Finally i found the solution is that.

Here i am using SqlConnection so the provider should not be provided in the connection string

TimeOut Problem In WCF or Web Service

When I am learning WCF services the first problem I faced is with the TIMEOUT.
I done everything correctly but the service is not running.
I googled about the problem.
Long looong posts about this problem.
Completely confused, hated WCF.
But,