VS 2013 - Intelli Sense

Hello,

I have a Problem with my Visual Studio 2013 and Intelli Sense and ASP.NET Websites.

Intelli Sense does not show the Objects placed in the .aspx File, for examble if I place a Label with the ID="Label", Intelli Sense does not show this in the .cs

Intelli Sense only Shows the Object placed in the .cs File.

Does anybody have an idea?

Thanks for your help and greetings from Berlin - Germany