在获取字符串表示之前，您需要将它强制转换为int。否则，您将获得枚举的表示，而不是整数。

You need to actually cast it to an int before getting the string representation. Otherwise you are getting the representation of the enumeration, rather than the integer.

kvPairList.Add(new KeyValuePair<string, string>(((int)enumValue).ToString(), GetDescription(enumValue)));

由于值为 System.Enum 而不是底层枚举，转换将不工作。否则可以使用适当的 Convert 方法。

Since the value is of type System.Enum and not the underlying enum, a cast won't work. You could otherwise use the appropriate Convert method.

kvPairList.Add(new KeyValuePair<string, string>(Convert.ToInt32(enumValue).ToString(), GetDescription(enumValue)));