private void btn_addPro_Click(object sender, EventArgs e)
        {
            AddProPanel.Show();
            EditBtn.Hide();
            Btn_SaveProduct.Show();

            Txt_ProductNameUp.Text                  = "";
            numericDiscountProUp.Text               = "";
            numericIncomingPriceProUp.Text          = "";
            numericIndvidualPriceProUp.Text         = "";
            numericQuantityProUp.Text               = "";
            numericQuantityPackageProUp.Text        = "";
            Como_productCategoryUpdate.SelectedText = "";
            Como_productBuySupplierUp.SelectedText  = "";
            Como_productUnitUpdate.SelectedText     = "";
        }
        private void editBtnProduct_Click(object sender, EventArgs e)
        {
            if (dgv_SalesBill.SelectedRows.Count == 0)
            {
                MessageBoxIcon.Warning.ToString();
                MessageBox.Show("يجب ان تختار منتج من المنتجات");
            }
            else
            {
                AddProPanel.Show();
                Btn_SaveProduct.Hide();
                EditBtn.Show();
                var P_id = int.Parse(dgv_SalesBill.SelectedRows[0].Cells[6].Value.ToString());

                Como_productCategoryUpdate.DataSource    = store.categories.ToList();
                Como_productCategoryUpdate.DisplayMember = "CategoryName";
                Como_productCategoryUpdate.ValueMember   = "ID";

                //////suplier
                Como_productBuySupplierUp.DataSource    = store.suppliers.ToList();
                Como_productBuySupplierUp.DisplayMember = "Name";
                Como_productBuySupplierUp.ValueMember   = "ID";
                ////unt
                Como_productUnitUpdate.DataSource    = store.ProductUnits.ToList();
                Como_productUnitUpdate.DisplayMember = "Name";
                Como_productUnitUpdate.ValueMember   = "ID";

                var query = store.products.FirstOrDefault(d => d.ID == P_id);


                Txt_ProductNameUp.Text                  = query.ProductName;
                numericDiscountProUp.Text               = query.Discount.ToString();
                numericIncomingPriceProUp.Text          = query.IncomePrice.ToString();
                numericIndvidualPriceProUp.Text         = query.Price_individual.ToString();
                numericQuantityProUp.Text               = query.quantityPerProducts.ToString();
                numericQuantityPackageProUp.Value       = query.quantityPerGroup;
                Como_productCategoryUpdate.SelectedText = query.categories.CategoryName.ToString();
                Como_productBuySupplierUp.SelectedText  = query.Supplier.Name.ToString();
                Como_productUnitUpdate.SelectedText     = query.ProductUnit.Name.ToString();
            }
        }