c# - Enum.Parse()或切换

要将字符串转换为枚举，以下哪种方法更好？

这段代码:

colorEnum color = (colorEnum)Enum.Parse(typeof(colorEnum), "Green");

或此:

string colorString = ...
colorEnum color;
switch (colorString)
{
    case "Green":
        color = colorEnum.Green;
        break;
    case "Red":
        color = colorEnum.Red;
        break;
    case "Orange":
        color = colorEnum.Orange;
        break;
    ....
}

最佳答案

您应该使用Enum.TryParse，如果失败，则可以正确处理该错误。

样本:

     ColorsEnum colorValue;
     if (Enum.TryParse(colorString, out colorValue))
        if (Enum.IsDefined(typeof(Colors), colorValue) | colorValue.ToString().Contains(","))
           Console.WriteLine("Converted '{0}' to {1}.", colorString, colorValue.ToString());
        else
           Console.WriteLine("{0} is not an underlying value of the Colors enumeration.", colorString);
     else
        Console.WriteLine("{0} is not a member of the Colors enumeration.", colorString);