public List<Proforma_Binding> Get_Collection(int ID)
        {
            List<Proforma_Binding> _List_Collection = new List<Proforma_Binding>();

            DataTable dt = Proforma_Binding_DA.Get_Collection(ID);

            foreach (DataRow row in dt.Rows)
            {
                Proforma_Binding _Proforma_Binding = new Proforma_Binding();

                _Proforma_Binding.ID = int.Parse(row["ID"].ToString());
                _Proforma_Binding.Proforma_Invoice_ID = int.Parse(row["Proforma_Invoice_ID"].ToString());
                _Proforma_Binding.Proforma_Invoice_No = row["Pi_No"].ToString();

                _List_Collection.Add(_Proforma_Binding);
            }

            return _List_Collection;
        }
        public Proforma_Binding Get_Proforma_Binding(int ID)
        {
            // Customer Detail
            Proforma_Binding _Proforma_Binding = new Proforma_Binding();

            DataTable dt = Proforma_Binding_DA.Get_Proforma_Binding(ID);
            _Proforma_Binding.Custom_Invoice_ID = int.Parse(dt.Rows[0]["Custom_Invoice_ID"].ToString());
            _Proforma_Binding.Custom_Invoice_No = dt.Rows[0]["Custom_Invoice_No"].ToString();
            _Proforma_Binding.Customer_ID = int.Parse(dt.Rows[0]["Customer_ID"].ToString());

            return _Proforma_Binding;
        }