1         ///<summary> 
 2         /// 从16进制转换成汉字 
 3         /// </summary> 
 4         /// <param name="hex"></param> 
 5         /// <param name="charset">编码,如"utf-8","gb2312"</param> 
 6         /// <returns></returns> 
 7         public static string UnHex(string hex, string charset)
 8         {
 9             if (hex == null)
10                 throw new ArgumentNullException("hex");
11             hex = hex.Replace(",", "");
12             hex = hex.Replace("\n", "");
13             hex = hex.Replace("\\", "");
14             hex = hex.Replace(" ", "");
15             if (hex.Length % 2 != 0)
16             {
17                 hex += "20";//空格 
18             }
19             // 需要将 hex 转换成 byte 数组。 
20             byte[] bytes = new byte[hex.Length / 2];
21             for (int i = 0; i < bytes.Length; i++)
22             {
23                 try
24                 {
25                     // 每两个字符是一个 byte。 
26                     bytes[i] = byte.Parse(hex.Substring(i * 2, 2),
27                     System.Globalization.NumberStyles.HexNumber);
28                 }
29                 catch
30                 {
31                     // Rethrow an exception with custom message. 
32                     //throw new ArgumentException("hex is not a valid hex number!", "hex");
33                     return "hex is not a valid hex number!";
34                 }
35             }
36             System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset);
37             return chs.GetString(bytes);
38         }