什么是c＃'bracketed'类型转换的运行时等效 [英] what's the runtime equivalent of c# 'bracketed' type cast

问题描述

假设我有一个枚举

[Flags]
public enum E { 
    zero = 0,
    one = 1
}

然后我可以写

E e;
object o = 1;
e = (E) o;

它将工作。

但是如果我在运行时尝试这样做，如

BUT if I try to do that at runtime, like

(o as IConvertible).ToType(typeof(E), null)

它会抛出InvalidCastException。

it will throw InvalidCastException.

有没有什么可以在运行时调用的，它将从int32转换为枚举，就像我以前写过一个转换一样？

So, is there something that I can invoke at runtime, and it will convert from int32 to enum, in the same way as if I wrote a cast as above?

推荐答案

object o = 1;
object z = Enum.ToObject(typeof(E), o); 

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