Read the data-bound grid from MySQL, and then bind the SQL

Get data inside MySQL protected void button1_click (object sender, EventArgs e) {///instantiate a strongly typed dataset macs_20140707tableadapter data = New Macs_20140707tableadapter (); DataTable ds= data. Getdatabyselect (); Gridview1.datasource = ds; Gridview1.databind (); } #region Insert SQL////// get all the data from the grid into the SQL database //////// protected void button2_click (object sender, EventArgs e) {string connectionString = "server=.; database=gz.sunnywifi.com;uid=sa;pwd=123456 "; SqlConnection conn = new SqlConnection (connectionString); try {Conn. Open (); for (int i = 0; i < GridView1.Rows.Count; i++) {String sqlstr = ""; SqlCommand comm = new SqlCommand (); String Router_mac = Gridview1.rows[i]. Cells[0]. Text.trim (). ToString (); String Device_mac = Gridview1.rows[i]. CELLS[1]. Text.trim (). ToString (); String create_time = Gridview1.rows[i]. CELLS[2]. Text.trim (). ToString (); int ID = Convert.ToInt32 ((gridview1.rows[i]. CELLS[3]. Text.trim (). ToString ())); String Ap_mac = Gridview1.rows[i]. CELLS[4]. Text.trim (). ToString (); int singal = Convert.ToInt32 ((gridview1.rows[i]. CELLS[5]. Text.trim (). ToString ())); Sqlstr + = "INSERT greenvpn_cm (addre_mac,dev_mav,greate_time,ap_mac,sunny_sinqh,ys_id) VALUES ('" + Router_mac + "', '" + D Evice_mac + "', '" + Create_time + "', '" + Ap_mac + "', '" + Singal + "', '" + ID + "');"; Comm.commandtext = sqLSTR; Comm. Connection = conn; Comm. ExecuteNonQuery (); }} catch (Exception ex) {Response.Write ("update failed, reason for failure:" + ex. Message); } finally {Conn. Close (); }} #endregion