C#保存listbox中数据到文本文件的方法

private void SaveLstToTxt(ListBox lst)
{
 sfd.Filter = "(*.txt)|*.txt";
 if (sfd.ShowDialog() == DialogResult.OK)
 {
  string sPath = sfd.FileName;
  FileStream fs = new FileStream(sPath,FileMode.Create);
  StreamWriter sw = new StreamWriter(fs,Encoding.UTF8);
  int iCount = lst.Items.Count - 1;
  for (int i = 0; i <= iCount; i++)
  {
   sw.WriteLine(lst.Items[i].ToString());
  }
  sw.Flush();
  sw.Close();
  fs.Close();
 }
}