What Visual Basic 6.0 WebClass events are not supported in ASP.NET?
Visual Basic 6.0 WebClass events that are not supported in ASP.NET include Initialize, BeginRequest, EndRequest, and Terminate. These event procedures will be upgraded by the upgrade wizard, but they will not be called at run time. After upgrading, you will need to move any code in these events to equivalent ASP.NET events, such as Init or Unload.