Question

Seems like this has to be documented somewhere but I’m not finding is anywhere. Perhaps my Google-fu is weakening.

Answer 1

You realize that this will depend on what you call .NET Framework classes. You probably might want to specify which assemblies you are looking for. Armed with this information you can load those assemblies and use reflection to list all public types that implement IDisposable in a given assembly. Let’s take the System assembly as example:

class Program
{
    static void Main()
    {
        var types = Assembly
            .Load("System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")
            .GetTypes()
            .Where(t => typeof(IDisposable).IsAssignableFrom(t))
            .OrderBy(t => t.Name);
        foreach (var type in types)
        {
            Console.WriteLine(type);
        }
    }
}