void SelectAllCustomer()
        {
            Customercontroller  custCtl = new Customercontroller();
            List <Customerinfo> custLst = new List <Customerinfo>();

            custLst = custCtl.selectallcustomerinfo();

            CustomerGv.DataSource = custLst;
            CustomerGv.DataBind();
        }
        protected void btnSave_Click(object sender, EventArgs e)
        {
            Customercontroller custCtlr = new Customercontroller();
            Customerinfo       custInfo = new Customerinfo();

            custInfo.CustomerCode = txtCustomerCode.Text;
            custInfo.Name         = txtCustomerName.Text;
            custInfo.TownshipID   = townshipData.SelectedValue;
            custInfo.Contact      = int.Parse(txtContact.Text);
            custInfo.address      = CustomerAddress.SelectedValue;

            custCtlr.InsertCustomer(custInfo);
            SelectAllCustomer();
        }