//将商品加入到购物列表
private void AddProductToSaleList()
{
if (this.txtProductId.Text.Trim() == string.Empty || this.txtQuantity.Text.Trim() == string.Empty)
{
return;
}
var pro = from p in this.saleProductList
where p.ProductId.Equals(this.txtProductId.Text.Trim())
select p;
if (pro.Count() > 0)
{
SaleProductInfo obj = pro.FirstOrDefault <SaleProductInfo>();
obj.Quantity += Convert.ToInt32(this.txtQuantity.Text.Trim());
obj.SubTotal = Math.Round(obj.Quantity * obj.UnitPrice * (obj.Discount == 0 ? 1 : obj.Discount) / 10, 2);
//return;
}
else
{
//购物列表没有该商品
if (!AddNewProductToSaleList())
{
return;
}
}
this.bs.DataSource = this.saleProductList;
this.dgvProdutList.DataSource = null;
this.dgvProdutList.DataSource = this.bs;
//修改总金额
this.lblTotalMoney.Text = (from p in this.saleProductList select p.SubTotal).Sum().ToString();
ClearProductInfo();
}
//将新商品加入到购物列表
private bool AddNewProductToSaleList()
{
SaleProductInfo objSaleProduct = null;
Product objProduct = new ProductService().GetProductInfoById(this.txtProductId.Text.Trim());
if (objProduct == null)//商品不存在
{
if (Convert.ToDecimal(this.txtUnitPrice.Text.Trim()) == 0 && MessageBox.Show("请问该商品不要钱吗？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.No)
{
return(false);
}
objProduct = new Product()
{
ProductId = this.txtProductId.Text.Trim().ToString(),
ProductName = "暂未登记商品",
UnitPrice = Convert.ToDecimal(this.txtUnitPrice.Text.Trim()),
Discount = this.txtDiscount.Text.Trim() == string.Empty ? 0 : Convert.ToDecimal(this.txtDiscount.Text.Trim())//若折扣框为空
};
}
objSaleProduct = new SaleProductInfo()
{
//SaleProduct = objProduct,
ProductId = objProduct.ProductId,
ProductName = objProduct.ProductName,
UnitPrice = objProduct.UnitPrice,
Discount = Math.Round(objProduct.Discount, 1),
Num = saleProductList.Count + 1,
Quantity = Convert.ToInt32(this.txtQuantity.Text.Trim()),
SubTotal = Math.Round(Convert.ToDecimal(Convert.ToInt32(this.txtQuantity.Text.Trim()) * objProduct.UnitPrice * (objProduct.Discount == 0 ? 1 : objProduct.Discount / 10)), 2)
};
saleProductList.Add(objSaleProduct);
this.bs.MoveLast();
return(true);
}
