Get to the physical GAC

thus:

subst x: %windir%\assembly\gac

View Full Datatable in debug

Relative paths in javascript when using asp.net

use Page.ResolveClientUrl

Repeater in ajax tab component

kept on going out of bounds
tabcontrol scrollbars did not help;likewise asp:panel with scrollbars

at the end i just added div inside tabpanel

IIS Security error

The application attempted to perform an operation not allowed by the security policy.  To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.

This can be caused by the site being set up in the wrong pool -e.g  it needs classic asp

Unkown missing static main error

mean the project was inadvertently created as a console project

Could not load file or assembly Error

The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

I had this when a dll was inadvertently copied and windows had the name as blah-copy.dll