C#枚举

 

using System;

class Program
{
   public enum Color
   {
      Red = 0xff0000,
      Orange = 0xFFA500,
      Yellow = 0xFFFF00,
      Lime = 0x00FF00,
      Cyan = 0x00FFFF,
      Blue = 0x0000FF,
      Purple = 0x800080
   }

   static void Main(string[] args)
   {
      Color color = Color.Blue;
      string colorString = "Blue";
      int colorValue = 0x0000FF;

      //枚举转字符串
      string enumStringOne = color.ToString();
      string enumStringTwo = Enum.GetName(typeof(Color), color);

      //枚举转值
      int enumValueOne = color.GetHashCode();
      int enumValueTwo = (int)color;
      int enumValueThree = Convert.ToInt32(color);

      //字符串转枚举
      Color enumOne = (Color)Enum.Parse(typeof(Color), colorString);

      //字符串转值
      int enumValueFour = (int)Enum.Parse(typeof(Color), colorString);

      //值转枚举
      Color enumTwo = (Color)colorValue;
      Color enumThree = (Color)Enum.ToObject(typeof(Color), colorValue);

      //值转字符串
      string enumStringThree = Enum.GetName(typeof(Color), colorValue);
   }
}

 

//假设有枚举值如下：

public enum DbProviderType

  {

      SqlServer,

      Oracle

  }
//1、将枚举转换为字符串：

string strDbType = DbProviderType.SqlServer.ToString();
//2、将字符串转换为枚举：

DbProviderType dbType = (DbProviderType)Enum.Parse(typeof(DbProviderType), strDbType, true);