Can the App_Code folder contain source code files in different programming languages?
No. All source code files kept in the root App_Code folder must be in the same programming language.
Update: However, you can create two subfolders inside the App_Code and then add both C# and VB.NET in the respective subfolders. You also have to add configuration settings in the web.config for this to work.
12/18/2012 3:39:38 PM