C# switch on type

c# switch-statement typeof
Adam picture Adam · Dec 18, 2010 · Viewed 206.8k times · Source

Possible Duplicate:
C# - Is there a better alternative than this to 'switch on type'?

C# doesn't support switching on the type of an object.
What is the best pattern of simulating this:

switch (typeof(MyObj))
    case Type1:
    case Type2:
    case Type3:

Answer

Mark H picture Mark H · Dec 18, 2010

I usually use a dictionary of types and delegates.

var @switch = new Dictionary<Type, Action> {
    { typeof(Type1), () => ... },
    { typeof(Type2), () => ... },
    { typeof(Type3), () => ... },
};

@switch[typeof(MyType)]();

It's a little less flexible as you can't fall through cases, continue etc. But I rarely do so anyway.

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