C# feature request: implement interfaces on anonymous types

Question

I am wondering what it would take to make something like this work:

using System;

class Program
{
    static void Main()
    {
        var f = new IFoo { 
              


        

Answer 1

An anonymous type can't be made to do anything except to have read-only properties.

Quoting the C# Programming Guide (Anonymous Types):

"Anonymous types are class types that consist of one or more public read-only properties. No other kinds of class members such as methods or events are allowed. An anonymous type cannot be cast to any interface or type except for object."