Execute C# code when browser close

Please have a look at this thread.
http://forums.asp.net/t/1721136.aspx/1?Browser+close+event

Get MAC Address in Client Machine

still in headache...

Could not load file or assembly Microsoft.SqlServer.Management.Sdk.Sfc

This error comes when you are trying to access SQL 2005 stuff from Visual Studio 2008. Download the following stuff

Microsoft SQL Server System CLR Types
Microsoft SQL Server 2008 Management Objects
Microsoft SQL Server 2008 Native Client

The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).

This error came because, in my master page there was a java script function like below

document.getElementById("<%=lblShoppingCart.ClientID %>").style.color = "#6CA2DE"

I used <%# instead of using <%=. It's work fine.

Here some valuable links related to this topic.

http://leedumond.com/blog/the-controls-collection-cannot-be-modified-because-the-control-contains-code-blocks/

http://www.west-wind.com/weblog/posts/2006/May/27/The-Controls-collection-cannot-be-modified-because-the-control-contains-code-blocks-ie-