Why doesn't C# switch statement allow using typeof/GetType()?

Question

As in this example:

switch ( myObj.GetType ( ) )
{
    case typeof(MyObject):
        Console.WriteLine ( \"MyObject is here\" );
        break;
}
         


        

Answer 1

In C# 7.0 you can do it. See Pattern Matching in C# 7.0 Case Blocks

// ----- Assume that spaceItem is of type SpaceType,
//       and that Planet and Star derive from SpaceType.
switch (spaceItem)
{
  case Planet p:
    if (p.Type != PlanetType.GasGiant)
      LandSpacecraft(p);
    break;
  case Star s:
    AvoidHeatSource(s);
    break;
  case null:
    // ----- If spaceItem is null, processing falls here,
    //       even if it is a Planet or Star null instance.
    break;
  default:
    // ----- Anything else that is not Planet, Star, or null.
    break;
}