An error occurred while analyzing the resources required to provide services to this request. Check the following detailed analysis error information and modify the source file as appropriate.

Analyzer Error

Note:An error occurred while analyzing the resources required to provide services to this request. Check the following detailed analysis error information and modify the source file as appropriate.
Analyzer error message:"" Does not extend the class "system. Web. UI. Page", so this is not allowed here.
Source error:

The reason may be that the namespace of your inherited class is incorrect.

Or this class does not exist.

Solution

Make sure that the class in this namespace exists.