kg · April 28, 2012 09:33 · Apr 27, 2012
diff --git a/Interfaces.cs b/Interfaces.cs
@@ -0,0 +1,34 @@
+using System;
+
+public interface I {
+    void Foo ();
+}
+
+public class A : I {
+    public void Foo () {
+        Console.WriteLine("A");
+    }
+}
+
+public class B : A, I {
+    void I.Foo () {
+        Console.WriteLine("B");
+    }
+}
+
+public static class Program {
+    public static void Main (string[] args) {
+        I i;
+
+        var a = new A();
+        i = a;
+        a.Foo(); // expected: "A"
+        i.Foo(); // expected: "A"
+
+        var b = new B();
+        i = b;
+        b.Foo(); // expected: "A"
+        i.Foo(); // expected: "B"
+
+    }
+}