C# switch on type(C# 开启类型)
问题描述
可能重复:
C# - 有没有更好的替代开启类型"?
C# 不支持切换对象的类型.
模拟这个的最佳模式是什么:
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:
推荐答案
见 gjvdkamp 的回答;此功能现在存在于 C# 中
See gjvdkamp's answer; this feature now exists in C#
我通常使用类型和委托的字典.
I usually use a dictionary of types and delegates.
var @switch = new Dictionary<Type, Action> {
{ typeof(Type1), () => ... },
{ typeof(Type2), () => ... },
{ typeof(Type3), () => ... },
};
@switch[typeof(MyType)]();
它有点不灵活,因为你不能通过案例,继续等等.但无论如何我很少这样做.
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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