C#逐行读取txt文件的方法

private void importTxtNoAdd()
{
  string line;
  string sFileName = "";
  if (openFileDialog1.ShowDialog() == DialogResult.OK)
  {
 sFileName = openFileDialog1.FileName;

 dtTemp.Rows.Clear();
 iXH = 0;

 System.IO.StreamReader file = new System.IO.StreamReader(sFileName);
 while ((line = file.ReadLine()) != null)
 {
  // if(line.Length==11 )
   DataRow dr = dtTemp.NewRow();
   dr[0] = iXH + 1;
   dr[1] = "临时用户";
   dr[2] = line;
   dtTemp.Rows.Add(dr);
   iXH++;
 }

 file.Close();
 System.Console.ReadLine();
 //bindGrid("");
  }
}