使用案例/开关和的GetType确定对象 [英] Using Case/Switch and GetType to determine the object
问题描述
可能重复:
<一href="http://stackoverflow.com/questions/298976/c-sharp-is-there-a-better-alternative-than-this-to-switch-on-type">C# - 是否有比这更好的选择的类型转换'
如果你想在对象类型开关
,什么是做到这一点的最好方法是什么?
If you want to switch
on a type of object, what is the best way to do this?
private int GetNodeType(NodeDTO node)
{
switch (node.GetType())
{
case typeof(CasusNodeDTO):
return 1;
case typeof(BucketNodeDTO):
return 3;
case typeof(BranchNodeDTO):
return 0;
case typeof(LeafNodeDTO):
return 2;
default:
return -1;
}
}
我知道这不工作的方式,但我不知道如何可以解决这个问题。
是一个的if / else
适当在这种情况下声明?
I know this doesn't work that way, but I was wondering how you could solve this.
Is an if/else
statement appropriate in this case?
或者你使用的开关,并添加的ToString()
的类型?
Or do you use the switch and add .ToString()
to the type?
推荐答案
如果我的真正的只好开关
对象的类型,我D使用的ToString()
。不过,我会避免它不惜一切代价:的IDictionary&LT;类型,INT&GT;
会做的更好,的游客可能是矫枉过正但除此之外,它仍然是一个完全正常的解决方案。
If I really had to switch
on type of object, I'd use .ToString()
. However, I would avoid it at all costs: IDictionary<Type, int>
will do much better, visitor might be an overkill but otherwise it is still a perfectly fine solution.
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