Enum 各种使用方法

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enum EnumT { Acc, BCC, Dcc };
        private void button2_Click(object sender, EventArgs e)
        {
            foreach (string item in Enum.GetNames(typeof(EnumT)))
            {
                this.comboBox1.Items.Add(item);
            }
        }

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            switch ((EnumT)Enum.Parse(typeof(EnumT), this.comboBox1.Text))
            {
                case EnumT.Acc:
                    break;
                case EnumT.BCC:
                    break;
                case EnumT.Dcc:
                    break;
                default:
                    break;
            }
        }

        enum enu { a = 1, b = 2, c = 3, d = 4 };
        private void button3_Click(object sender, System.EventArgs e)
        {
            //foreach
            foreach (string s in Enum.GetNames(typeof(enu)))
            {
                Console.WriteLine(s);//a b c d
            }

            foreach (int s in Enum.GetValues(typeof(enu)))
            {
                Console.WriteLine(s);//1 2 3 4
            }

            //to   Array[]
            string[] en = Enum.GetNames(typeof(enu));//a b c d
            Array ev = Enum.GetValues(typeof(enu));//a b c d
        }

----------网络上的-----------

using  System;

public  class  EnumTest  {
       enum  Days  {  Saturday,  Sunday,  Monday,  Tuesday,  Wednesday,  Thursday,  Friday  };

       public  static  void  Main()  {

               Type  weekdays  =  typeof(Days);

               Console.WriteLine("The  days  of  the  week,  and  their  corresponding  values  in  the  Days  Enum  are:");

               foreach  (  string  s  in  Enum.GetNames(weekdays)  )
                       Console.WriteLine(  "{0,-11}=  {1}",  s,  Enum.Format(  weekdays,  Enum.Parse(weekdays,  s),  "d"));
       }
}

来自MSDN
枚举可用来存储字符串与数字的值对，相当于一个对照表
常用方法：GetName(),GetValue(),Parse()

1 using System;
2
3 public class EnumTest {
4     enum Days { Saturday, Sunday, Monday, Tuesday, Wednesday, Thursday, Friday };
5     enum BoilingPoints { Celcius = 100, Fahrenheit = 212 };
6     [FlagsAttribute]
7     enum Colors { Red = 1, Green = 2, Blue = 4, Yellow = 8 };
8
9     public static void Main() {
10
11         Type weekdays = typeof(Days);
12         Type boiling = typeof(BoilingPoints);
13
14         Console.WriteLine("The days of the week, and their corresponding values in the Days Enum are:");
15
16         foreach ( string s in Enum.GetNames(weekdays) )
17             Console.WriteLine( "{0,-11}= {1}", s, Enum.Format( weekdays, Enum.Parse(weekdays, s), "d"));
18
19         Console.WriteLine();
20         Console.WriteLine("Enums can also be created which have values that represent some meaningful amount.");
21         Console.WriteLine("The BoilingPoints Enum defines the following items, and corresponding values:");
22
23         foreach ( string s in Enum.GetNames(boiling) )
24             Console.WriteLine( "{0,-11}= {1}", s, Enum.Format(boiling, Enum.Parse(boiling, s), "d"));
25
26         Colors myColors = Colors.Red | Colors.Blue | Colors.Yellow;
27         Console.WriteLine();
28         Console.WriteLine("myColors holds a combination of colors. Namely: {0}", myColors);
29     }
30 }
31
32