I noticed that in some requests the output of my Visual Studio displays some messages like for example:
Exception Generated: 'System.Collections.Generic.KeyNotFoundException' in mscorlib.dll
Exception Generated: 'System.NullReferenceException' in SiteTeste.dll
PrintScreen of errors in output
Some exceptions are displayed on the class / line that the error happened, however looking at these I'm in the dark. How can I tell which part of the system these errors are going on?