示例
public enum DayOfWeek
{
Sunday,
Monday,
Tuesday,
Wednesday,
Thursday,
Friday,
Saturday
}
//枚举到字符串
string thursday = DayOfWeek.Thursday.ToString(); // "Thursday"
string seventhDay = Enum.GetName(typeof(DayOfWeek), 6); // "Saturday"
string monday = Enum.GetName(typeof(DayOfWeek), DayOfWeek.Monday); // "Monday"
//要枚举的字符串（仅.NET4.0+-参见以下有关.NET早期版本的替代语法）
DayOfWeek tuesday;
Enum.TryParse("Tuesday", out tuesday); //星期几
DayOfWeek sunday;
bool matchFound1 = Enum.TryParse("SUNDAY", out sunday); //返回false（区分大小写的匹配）
DayOfWeek wednesday;
bool matchFound2 = Enum.TryParse("WEDNESDAY", true, out wednesday); //返回true;DayOfWeek.Wednesday（不区分大小写的匹配）
//要枚举的字符串（所有.NET版本）
DayOfWeek friday = (DayOfWeek)Enum.Parse(typeof(DayOfWeek), "Friday"); //DayOfWeek.Friday
DayOfWeek caturday = (DayOfWeek)Enum.Parse(typeof(DayOfWeek), "Caturady"); //ThowsArgumentException
//枚举的所有名称都以字符串形式输入
string[] weekdays = Enum.GetNames(typeof(DayOfWeek));
