Save data จาก gridview ตามเงือนไขแบบนี้ เขียนแล้วsaveได้แค่ค่าเดียว ช่วยดู code ให้หน่อยนะคะ

 protected void cmdSave_Click(object sender, EventArgs e)
    {

        eContractDBDataContext db = new eContractDBDataContext();

            int icount = 0;

            for (int i = 0; i < grdSearch.Rows.Count; i++)
            {
               CheckBox chkUse = new CheckBox();
               chkUse = grdSearch.Rows[i].FindControl("chkUse") as CheckBox;

               chkUse.Enabled = false;

               if (chkUse.Checked == true)
               {
                   
                   CheckBox chkAdult = new CheckBox();
                   chkAdult = grdSearch.HeaderRow.FindControl("chkAdult") as CheckBox;

                   CheckBox chkTeen = new CheckBox();
                   chkTeen = grdSearch.HeaderRow.FindControl("chkTeen") as CheckBox;

                   CheckBox chkChild = new CheckBox();
                   chkChild = grdSearch.HeaderRow.FindControl("chkChild") as CheckBox;


                   TextBox txtMealPrice1 = new TextBox();
                   txtMealPrice1 = grdSearch.Rows[i].FindControl("txtMealPrice1") as TextBox;
                   if (txtMealPrice1.Text == "")
                   {
                       txtMealPrice1.Text = "0";
                   }

                   TextBox txtMealPrice2 = new TextBox();
                   txtMealPrice2 = grdSearch.Rows[i].FindControl("txtMealPrice2") as TextBox;
                   if (txtMealPrice2.Text == "")
                   {
                       txtMealPrice2.Text = "0";
                   }

                   TextBox txtMealPrice3 = new TextBox();
                   txtMealPrice3 = grdSearch.Rows[i].FindControl("txtMealPrice3") as TextBox;
                   if (txtMealPrice3.Text == "")
                   {
                       txtMealPrice3.Text = "0";
                   }

                   Mealz ml = new Mealz();

                   if (chkAdult.Checked == true)
                   {
                       ml.AgeID = 33;
                       ml.MealPrice = txtMealPrice1.Text.ToDecimal();
                   }
                    if (chkTeen.Checked == true)
                   {
                       ml.AgeID = 34;
                       ml.MealPrice = txtMealPrice2.Text.ToDecimal();
                   }
                   if (chkChild.Checked == true)
                   {
                       ml.AgeID = 36;
                       ml.MealPrice = txtMealPrice3.Text.ToDecimal();
                   }
                   
                   
                   ml.Compulsory = "x";
                   ml.CreateBy = User.Identity.Name;
                   ml.CurrencyID = Request.QueryString["cur"].ToString().ToDecimal();
                   ml.MealTypeID = grdSearch.DataKeys[i].Value.ToString().ToDecimal();
                   ml.PropID = Request.QueryString["HotelID"].ToString().ToDecimal();
                   ml.UpdateBy = "";
                   ml.UpdateTime = DateTime.Now;
                   ml.ValidYear = "";
                   ml.ValidID = Request.QueryString["V"].ToString().ToDecimal();

                   db.Mealzs.InsertOnSubmit(ml);
                   db.SubmitChanges();

                   icount = icount + 1;

                 } 
           }

           if (icount == 0)
           {
               Alert("er", "Please Choose Meal Type", true);
               return;
           }
           else
           {
               cmdSave.Visible = false;
               cmdUpdate.Visible = true;

               Alert(MsgType.FinishSave);
               return;
           }
       
 }