用字节方式编码进行读取行. 关键代码

private Encoding fileEncoding = Encoding.GetEncoding("GB2312");

using (StreamReader sr = new StreamReader(fullName, fileEncoding ))
{
while ((line = sr.ReadLine()) != null)
{
count++;

byte[] bytes = fileEncoding.GetBytes(line);//extractBytes(line);
int nextStart = 0;

int iLen = lineArray[j].Length;
if (j == 0)
{
scl.rq = fileEncoding.GetString(bytes, 0, iLen);
nextStart = 0 + iLen+1;
}