tests/test-310.cs

   1 namespace test
   2 {
   3
   4         interface IIntf1
   5         {
   6                 string GetType(int index);
   7         }
   8
   9         interface IIntf2: IIntf1
  10         {
  11                 bool IsDone();
  12         }
  13
  14         class Impl: IIntf2
  15         {
  16                 public string GetType(int index)
  17                 {
  18                         return "none";
  19                 }
  20
  21                 public bool IsDone()
  22                 {
  23                         return true;
  24                 }
  25         }
  26
  27         class myclass
  28         {
  29
  30           public static void Main(string[] args)
  31           {
  32             IIntf1 intf = new Impl();
  33             IIntf2 intf2 = intf as IIntf2;
  34             if (intf2 != null) {
  35                 string str = intf2.GetType(0);
  36             }
  37           }
  38         }
  39 }