1         /// 
 2         /// 将Unicode编码转换为汉字字符串 3         /// 
 4         /// Unicode编码字符串 5         /// 
     
      汉字字符串
      6         public static string ToGB2312(string str) 7         { 8             StringBuilder sb = new StringBuilder(); 9             MatchCollection mCollection2 = Regex.Matches(str, "([\\w]+)|(\\\\u([\\w]{4}))");10             if (mCollection2 != null && mCollection2.Count > 0)11             { 12                 foreach (Match m2 in mCollection2)13                 {14                     string v = m2.Value;15                     if (v.StartsWith("\\u"))16                     {17                         string word = v.Substring(2);18                         byte[] codes = new byte[2];19                         int code = System.Convert.ToInt32(word.Substring(0, 2), 16);20                         int code2 = System.Convert.ToInt32(word.Substring(2), 16);21                         codes[0] = (byte)code2;22                         codes[1] = (byte)code;23                         sb.Append(Encoding.Unicode.GetString(codes));24                     }25                     else26                     {27                         sb.Append(v);28                     }29                 } 30             }31             return sb.ToString();32         }

1         //可以包括其他字符        2         public string uncode(string str) 3         { 4             string outStr = ""; 5             Regex reg = new Regex(@"(?i)//u([0-9a-f]{4})"); 6             outStr = reg.Replace(str, delegate(Match m1) 7             { 8                 return ((char)Convert.ToInt32(m1.Groups[1].Value, 16)).ToString(); 9             });10             return outStr;11         }