protected void Button1_Click1(object sender, EventArgs e)
{
int maSP = Int32.Parse(Request.QueryString["maSP"].ToString());
int SoLuongMua = int.Parse(txtSoLuong.Text);
if (Session["giohang"] == null)
{
Session["giohang"] = new List <GioHangDetailDTO>();
}
List <GioHangDetailDTO> giohang = Session["giohang"] as List <GioHangDetailDTO>;
if (giohang.FirstOrDefault(m => m.ID == maSP) == null)
{
DataTable dt = lop_son.TimSP("Select * from SanPham where maSP='" + maSP + "'");
GioHangDetailDTO newItem = new GioHangDetailDTO(int.Parse(dt.Rows[0]["maSP"].ToString()),
dt.Rows[0]["tenSP"].ToString(), dt.Rows[0]["hinhAnh"].ToString(), SoLuongMua
, double.Parse(dt.Rows[0]["gia"].ToString()));
giohang.Add(newItem);
Session["giohang"] = giohang;
}
else
{
foreach (GioHangDetailDTO item in giohang)
{
if (item.ID == maSP)
{
item.SoLuong++;
}
}
Session["giohang"] = giohang;
}
Response.Redirect("GioHang.aspx");
}