定义以下枚举：

public enum TimeOfDay
{
    Moning = 0,
    Afternoon = 1,
    Evening = 2,
};

(1)获取枚举字符串

TimeOfDay time = TimeOfDay.Afternoon;
Console.WriteLine(time.ToString());//输出：Afternoon

(2)Enum.Parse()方法。

TimeOfDay time2 = (TimeOfDay) Enum.Parse(typeof(TimeOfDay), "afternoon", true);
Console.WriteLine((int)time2);//输出1

(3)得到枚举的某一值对应的名称

lbOne.Text = Enum.GetName(typeof(TimeOfDay), 0);

(4)得到枚举的所有的值

foreach (int i in Enum.GetValues(typeof(TimeOfDay)))
lbValues.Text += i.ToString();

(5)枚举所有的名称

foreach(string temp in Enum.GetNames(typeof(TimeOfDay)))
lbNames.Text+=temp;