//保存表項到txt文件－－－－－－－－－－－－－－－－－－－－－－－－－－－－        private void menuItem5_Click(object sender, EventArgs e)        {            //string file = this.saveFileDialog1.FileName;            string file = "aa.txt";            FileInfo fi = new FileInfo(file);            StreamWriter sw = fi.CreateText();            sw.WriteLine("名稱\t單價");                        for (int i = 0; i < this.listView1.Items.Count; i++)             {                sw.WriteLine("{0}\t{1}", listView1.Items[i].Text, listView1.Items[i].SubItems[1].Text);            }            sw.Close();            MessageBox.Show("數據保存成功！", "恭喜你:");        }初次接觸c#以上是我寫的把istView控件的數據保存到txt文件，如何按照原格式讀入到istView？謝謝！