C# Gridview 更新中

Question

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*[在此处输入图片描述][1]

  [1]: https://i.stack.imgur.com/rRmHY.png

  ***sid.Text = dataGridView1.SelectedRows[0].Cells[0].Value.ToString();
            sname.Text = dataGridView1.SelectedRows[0].Cells[1].Value.ToString();
            sclass.SelectedItem = dataGridView1.SelectedRows[0].Cells[2].Value.ToString();
            date.Text = dataGridView1.SelectedRows[0].Cells[3].Value.ToString();
            sgender.SelectedItem = dataGridView1.SelectedRows[0].Cells[4].Value.ToString();
            sphone.Text = dataGridView1.SelectedRows[0].Cells[5].Value.ToString();
            sparent.Text = dataGridView1.SelectedRows[0].Cells[6].Value.ToString();*
            if (sid.Text == "")
            {
                key = 0;
            }
            else
            {
                key = Convert.ToInt32(dataGridView1.SelectedRows[0].Cells[0].Value.ToString());

            }***

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