.NET中使用数据流出现乱码，怎么解决

.NET中使用数据流出现乱码，如何解决？
Stream stream = FileUpload1.PostedFile.InputStream;
   
  StreamReader sr = new StreamReader(stream);

  string strLine = sr.ReadLine();

  while (strLine != null)
  {
  Response.Write(strLine);
  Response.Write("<br/>");
  strLine = sr.ReadLine();
  }

  sr.Close();

非中文的没问题，中文就变成了乱码。。哎

[解决办法]


 StreamReader sr = new StreamReader(stream);

------》

StreamReader sr = new StreamReader(stream, Encoding.GetEncoding("utf-8"));