Please forgive me, I'm new to C#.
I have added a class file to my ASP.NET project but I cannot reference it as a type in my default.aspx code behind.
I've put test classes at the root of the project and in folders under App_Code. All the types I try to declare error out on compile.
What steps do I need to take after creating a class file to be able to reference that class in the rest of my app?