Edit Question - KnowledgeHub

Title Body

When implementing dynamic dispatch using dynamic on a generic class, and the generic type parameter is a private inner class on another class, the runtime binder throws an exception. For example: using System; public abstract class Dispatcher<T> { public T Call(object foo) { return CallDispatch((dynamic)foo); } protected abstract T CallDispatch(int foo); protected abstract T CallDispatch(string foo); } public class Program { public static void Main() { TypeFinder d = new TypeFinder(); Console.WriteLine(d.Call(0)); Console.WriteLine(d.Call("")); } private class TypeFinder : Dispatcher<CallType> { protected override CallType CallDispatch(int foo) { return CallType.Int; } protected override CallType CallDispatch(string foo) { return CallType.String; } } private enum CallType { Int, String } } Here, a RuntimeBinderException will be thrown with the message 'Dispatcher.CallDispatch(int)' is inaccessible due to its protection level The reason for the inaccessibility is that the type parameter T is the private CallType which Dispatcher<T> cannot access. Therefore, CallDispatch must be inaccessible - but it isn't, because it's accessible as T . Is this a bug with dynamic , or is this not supposed to be supported?

Tags (comma-separated) Cancel