string sqlstr = "update [Collection] set Col_Number='"
+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString() + "',Col_ZhuShiG='"
+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString() + " where Col_ID="
+ Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Value.ToString()) + "";