C# 枚举、字符串、值的相互转换

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(); //效率低，不推荐  
       string  enumStringTwo  =  Enum.GetName( typeof (Color), color);//推荐  
  
       // 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 );