ASP.Net Server Controls Not Showing on pages

This problem might occur when you install IIS after visual studio, so to resolve this problem try registering “aspnet_isapi.dll” with following command on command prompt.

Note: comman path for aspnet_isapi.dll and aspnet_regiis.exe is

C:\windows\Microsoft.net\framework\v1.1.4322

Here v1.1.4322 is .Net Framework version.

C:\windows\Microsoft.net\framework\v1.1.4322> regsvr32 aspnet_isapi.dll

And Install asp.net server by following command

C:\windows\Microsoft.net\framework\v1.1.4322> aspnet_regiis.exe –i