1             //不同編碼之間的轉(zhuǎn)換
 2             string GB18030String = "你好！晴天豬";
 3             Console.WriteLine("需要轉(zhuǎn)換的字符串：{0}", GB18030String);
 4             #region 對字符串進行GB18030格式編碼
 5 
 6             //獲取編碼器
 7             Encoding gb18030Encoding = Encoding.GetEncoding("GB18030");
 8             //將字符串轉(zhuǎn)換為char類型數(shù)組
 9             char[] chars = GB18030String.ToCharArray();
10             //獲取編碼為字節(jié)序列后的字節(jié)數(shù)組長度
11             int buffLength = gb18030Encoding.GetByteCount(chars, 0, chars.Length);
12             //根據(jù)獲取的字節(jié)長度聲明數(shù)組，存儲編碼后的字節(jié)
13             byte[] gb18030Buffer = new byte[buffLength];
14             //獲取GB18030編碼的字節(jié)序列
15             gb18030Buffer = gb18030Encoding.GetBytes(chars, 0, chars.Length);
16             Console.WriteLine("GB18030編碼的字節(jié)序列：{0}", BitConverter.ToString(gb18030Buffer));
17             //將GB18030編碼的字節(jié)序列轉(zhuǎn)換成UTF-8編碼的字節(jié)序列
18             byte[] unicodeBuffer = Encoding.Convert(gb18030Encoding, Encoding.UTF8, gb18030Buffer);
19             Console.WriteLine("轉(zhuǎn)換為UTF-8編碼字節(jié)序列：{0}", BitConverter.ToString(unicodeBuffer));
20 
21             #endregion
22 
23             #region 將GB18030編碼轉(zhuǎn)換為UTF-8編碼
24 
25             //獲取UTF-8解碼器
26             Decoder utf8Decoder = Encoding.UTF8.GetDecoder();
27             //獲取解碼為字符后字符數(shù)組的長度
28             int utfChartsLength = utf8Decoder.GetCharCount(unicodeBuffer, 0, unicodeBuffer.Length, true);
29             //根據(jù)獲取解碼后的長度創(chuàng)建char數(shù)組
30             char[] utfChart = new char[utfChartsLength];
31             //將UTF-8編碼的字節(jié)序列轉(zhuǎn)換為字符串
32             utf8Decoder.GetChars(unicodeBuffer, 0, unicodeBuffer.Length, utfChart, 0);
33 
34             StringBuilder strBuilder = new StringBuilder();
35             foreach (char ca in utfChart)
36             {
37                 strBuilder.Append(ca);
38             }
39             Console.WriteLine("UTF-8的字符序列解碼：{0}", strBuilder.ToString());

 1         /// <summary>
 2         /// 獲取字符串編碼之后的bytes數(shù)組
 3         /// </summary>
 4         /// <param name="codeType">編碼類型名稱</param>
 5         /// <param name="strCode">將被編碼的字符串</param>
 6         /// <returns></returns>
 7         private byte[] GetEncodeBeforeBuffer(string codeType,string strCode)
 8         {
 9             //根據(jù)編碼類型構造該類型編碼的編碼器的實例
10             Encoder encoder = Encoding.GetEncoding(codeType).GetEncoder();
11 
12             char[] chars = strCode.ToCharArray();
13             //根據(jù)獲取對字符進行編碼所產(chǎn)生的字節(jié)數(shù)來創(chuàng)建一個byte數(shù)組
14             byte[] bytes = new byte[encoder.GetByteCount(chars, 0, chars.Length, true)];
15 
16             //將字符寫入到byte數(shù)組中
17             encoder.GetBytes(chars, 0, chars.Length, bytes, 0, true);
18 
19             return bytes;
20         }
21 
22         /// <summary>
23         ///獲取字符串解碼之后的字符串
24         /// </summary>
25         /// <param name="codeType">編碼格式</param>
26         /// <param name="byteCode">編碼的字節(jié)數(shù)組</param>
27         /// <returns></returns>
28         private string GetDecodeBeforeText(string codeType, byte[] byteCode)
29         {
30             //根據(jù)編碼類型構造該類型編碼的解碼器的實例
31             Decoder decoder = Encoding.GetEncoding(codeType).GetDecoder();
32             
33             //計算對字節(jié)序列（從指定字節(jié)數(shù)組開始）進行解碼所產(chǎn)生的字符數(shù)
34             char[] chars = new char[decoder.GetCharCount(byteCode, 0, byteCode.Length,true)];
35 
36             //根據(jù)獲取的解碼所產(chǎn)生的字節(jié)數(shù)來創(chuàng)建一個char數(shù)組
37             int charLen = decoder.GetChars(byteCode, 0, byteCode.Length, chars, 0);
38 
39             StringBuilder strResult = new StringBuilder();
40             
41             foreach (char c in chars)
42             {
43                 strResult = strResult.Append(c.ToString());
44             }
45             return strResult.ToString();
46         }