不過，在某些時候，我們還是需要將星期三轉成數字3，或是將"Sunday"解讀成為DayOfWeek.Sunday。廢話不多說，請大家看以下的程式，它完整地示範了如何進行int<->enum, string<->enum間的轉換:
int i = 3;
//Convert From Integer to Enum
DayOfWeek dw = (DayOfWeek)Enum.ToObject(typeof(DayOfWeek), i);
Console.WriteLine(string.Format("int [{0}] -> enum [{1}]", i, dw));//Convert From Enum To Integer
dw = DayOfWeek.Thursday;
i = (int)dw;
Console.WriteLine(string.Format("enum [{1}] -> int [{0}]", i, dw));//Convert From Enum To String
dw = DayOfWeek.Friday;
string s = dw.ToString();
Console.WriteLine(string.Format("enum [{1}] -> string '{0}'", s, dw));//Convert From String To Enum
s = "Sunday";
dw = (DayOfWeek)Enum.Parse(typeof(DayOfWeek), s);
Console.WriteLine(string.Format("string '{0}' -> enum [{1}]", s, dw));