ASP.NET

protected void Button1_Click(object sender, EventArgs e)
    {
       //add
        
        int x = 0;
       

        foreach (GridViewRow row in GridView1.Rows)
        {


             CheckBox c1 = (CheckBox)row.FindControl("chk");
            TextBox qt = (TextBox)row.FindControl("txtQuantity");
            TextBox tot1 = (TextBox)row.FindControl("txtTotal");

            Label categoryname = (Label)row.FindControl("Label1");
            Label ItemKey = (Label)row.FindControl("Label2");
            Label ItemKeyNameE = (Label)row.FindControl("Label3");
            Label CurrentQTY = (Label)row.FindControl("Label4");
            Label SalesPrice = (Label)row.FindControl("Label5");
            //=====================================================



            if (c1.Checked == true)
            {
               
                int chempty = 0;

                SqlCommand getpk = new SqlCommand("select IDENT_CURRENT('TblOrder')", con);
                getpk.CommandTimeout = 0;
                con.Open();
                x = Convert.ToInt32(getpk.ExecuteScalar());
                Session["order"] = x;
                con.Close();
                //add to temp
                SqlCommand cmdtemp = new SqlCommand("Addtemp", con);
                cmdtemp.CommandType = CommandType.StoredProcedure;
                con.Open();
                cmdtemp.Parameters.AddWithValue("@OrderNo", Convert.ToInt32(x));
                cmdtemp.Parameters.AddWithValue("@CategoryNameE", categoryname.Text);
                cmdtemp.Parameters.AddWithValue("@ItemKey", ItemKey.Text);

                cmdtemp.Parameters.AddWithValue("@ItemKeyNameE", ItemKeyNameE.Text);
                cmdtemp.Parameters.AddWithValue("@CurrentQTY", CurrentQTY.Text);
                cmdtemp.Parameters.AddWithValue("@SalesPrice", SalesPrice.Text);
                cmdtemp.Parameters.AddWithValue("@Quantity", qt.Text);
                cmdtemp.Parameters.AddWithValue("@total", tot1.Text);
                chempty = Convert.ToInt32(cmdtemp.ExecuteNonQuery());

                con.Close();



            }

            
           
            

        }
        foreach (GridViewRow ro in GridView1.Rows)
        { 

            CheckBox c2 = (CheckBox)ro.FindControl("chk");
            TextBox qt1 = (TextBox)ro.FindControl("txtQuantity");
            TextBox tot1 = (TextBox)ro.FindControl("txtTotal");


            if (c2.Checked)
            {
                                c2.Checked= false;
                qt1.Visible = false;

                tot1.Visible = false;
            
            }
        }
        //Response.Redirect("CheckOut.aspx");

    }

    protected override void OnInit(EventArgs e)
    {

        string formText = @"
<script runat=""server"">

    protected void Page_Load(object sender, EventArgs e)
    {
        
    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        ((Button)sender).Text = TextBox1.Text;
    }
</script>

<asp:TextBox ID=""TextBox1"" runat=""server""></asp:TextBox>
<asp:Button ID=""btn1"" runat=""server"" onclick=""Button1_Click""></asp:Button>
";
        Control dControl = Page.ParseControl(formText);

        Page.Form.Controls.Add(dControl);

        base.OnInit(e);
    }

private string ProcessFormPOST(string strURL, string strFormData)
       {
           try
           {
               //string strViewstate = GetInitialViewState(strURL);
               //strViewstate = System.Web.HttpUtility.UrlEncode(strViewstate);
               //strFormData += "&__VIEWSTATE=" + strViewstate;

               byte[] buffer = Encoding.UTF8.GetBytes(strFormData);
               string proxy = null;

               System.Net.HttpWebRequest req = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(strURL);

               req.Method = "POST";
               req.ContentType = "application/x-www-form-urlencoded";
               req.ContentLength = buffer.Length;
               req.Proxy = new System.Net.WebProxy(proxy, true); // ignore for local addresses
               req.CookieContainer = new System.Net.CookieContainer(); // enable cookies

               System.IO.Stream reqst = req.GetRequestStream(); // add form data to request stream
               reqst.Write(buffer, 0, buffer.Length);
               //reqst.Flush();
               reqst.Close();

               System.Net.HttpWebResponse res = (System.Net.HttpWebResponse)req.GetResponse(); // send request, get response

               System.IO.Stream resst = res.GetResponseStream(); // display HTTP response
               System.IO.StreamReader sr = new System.IO.StreamReader(resst);

               return sr.ReadToEnd();
           }
           catch (Exception ex)
           {
               throw ex;
           }
       }