本来兴高采烈实现了下面的代码。
private T str2enum<T>(string en) where T: Enum
{
var os = Enum.GetNames(typeof(T));
foreach (var o in os)
{
var s = ((T)Enum.Parse(typeof(T), o));
if (s.EnumToString() == en)
{
return s;
}
}
return default(T);
}
VS突然提示
Error 1 Constraint cannot be special class ‘System.Enum’
突然感到莫名奇妙,于是查一查微软老大怎么解释的。
看到官方网上说了一堆也没太明白。反正就是不让用。于是很多人用了很多方法去绕过,比如用struct代替Enum绕过这个问题。
但是,很不巧,用了struct之后,Enum的扩展方法(public static class)就出不来了。晕死。
哎,放弃吧。
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