从字符串:
YourEnum foo = (YourEnum) Enum.Parse(typeof(YourEnum), yourString);
// the foo.ToString().Contains(",") check is necessary for enumerations marked with an [Flags] attribute
if (!Enum.IsDefined(typeof(YourEnum), foo) && !foo.ToString().Contains(","))
throw new InvalidOperationException($"{yourString} is not an underlying value of the YourEnum enumeration.")
来自 int:
YourEnum foo = (YourEnum)yourInt;
更新:
从数字你也可以
YourEnum foo = (YourEnum)Enum.ToObject(typeof(YourEnum) , yourInt);
只是施展它:
MyEnum e = (MyEnum)3;
您可以使用Enum.IsDefined检查它是否在范围内:
if (Enum.IsDefined(typeof(MyEnum), 3)) { ... }
或者,使用扩展方法而不是单行:
public static T ToEnum<T>(this string enumString)
{
return (T) Enum.Parse(typeof (T), enumString);
}
用法:
Color colorEnum = "Red".ToEnum<Color>();
要么
string color = "Red";
var colorEnum = color.ToEnum<Color>();