public static string GetEncodingString(string srcString)
   {
 Encoding e8859Encode = Encoding.GetEncoding("iso-8859-1");
Encoding srcEncode = Encoding.GetEncoding("gb2312");
Encoding dstEncode = Encoding.Unicode;
byte[] srcBytes = e8859Encode.GetBytes(srcString);//用iso-8859-1去转换源字符串
byte[] dstBytes = Encoding.Convert(srcEncode, dstEncode, srcBytes);//但是，是从gb2312转到unicode的
char[] dstChars = new char[dstEncode.GetCharCount(dstBytes, 0, dstBytes.Length)];
dstEncode.GetChars(dstBytes, 0, dstBytes.Length, dstChars, 0);
return new string(dstChars);
 }具体原因我推测是因为数据过来是ISO-8859-1,但.Net地层格处理成了Gb2312了，所以需要通过两种编码转换成Unicode才能正常显示，听说在Java中只要new String(s.getBytes("ISO-8859-1"),"gb2312");就OK了。
转换成ISO
 public static string GetISOEncodedString(string srcString)
{
  if(bDBInfor) {
Encoding e8859Encode = Encoding.GetEncoding("iso-8859-1");
Encoding srcEncode = Encoding.Unicode;
Encoding dstEncode = Encoding.GetEncoding("gb2312");
byte[] srcBytes = srcEncode.GetBytes(srcString);//用Unicode去转换源字符串
byte[] dstBytes = Encoding.Convert(srcEncode, dstEncode, srcBytes);//但是，是从gb2312转到unicode的
char[] dstChars = new char[e8859Encode.GetCharCount(dstBytes, 0, dstBytes.Length)];
e8859Encode.GetChars(dstBytes, 0, dstBytes.Length, dstChars, 0);
return new string(dstChars);
 }
return srcString;
}
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