c#枚举

新装vs2008,不来helloworld,来个枚举
using System;

/// <summary>
/// Class1 的摘要说明
/// </summary>
public class Class1
{
    public Class1()
    {
       
    }
   //枚举类型缺省是int类型，如果不赋值，第一个的值是0，以后的是前一个加1
    public enum var1 { Mike = 100, Nike = 102, Jike }

    public enum var2:int { Mike = 100, Nike, Jike }

    public enum var3 { Mike = -1, Nike, Jike }

    public enum var4 { Mike, Nike, Jike }



   public static void Main()
    {
        int vm = (int)var1.Mike;

      // 注意，var1.Mike的类型是var1，不是int,如果不显示转换，打印是名字Mike
        Console.WriteLine("var1.Mike={0};var1.Nike={1};
              var1.Jike={2}", vm, (int)var1.Nike,var1.Jike);
     //不显示转换，加1无效
        Console.WriteLine("var2.Mike={0};var2.Nike={1};
              var2.Jike={2}", var2.Mike+1, var2.Nike, var2.Jike);
        Console.WriteLine("var3.Mike={0};var3.Nike={1};
              var3.Jike={2}", var3.Mike, var3.Nike, var3.Jike);
        Console.WriteLine("var4.Mike={0};var4.Nike={1};
              var4.Jike={2}", (int)var4.Mike, (int)var4.Nike,
                          (int)var4.Jike);

       
    }

   
}


运行结果：
var1.Mike=100;var1.Nike=102;var1.Jike=Jike
var2.Mike=Nike;var2.Nike=Nike;var2.Jike=Jike
var3.Mike=Mike;var3.Nike=Nike;var3.Jike=Jike
var4.Mike=0;var4.Nike=1;var4.Jike=2