private void Btnthem_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            Themsuasanpham themsuasanpham = new Themsuasanpham();

            themsuasanpham.Show();
            themsuasanpham.khicapnhat += Themsuasanpham_khicapnhat;
        }
        private void Btnsua_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            Object  id          = grviewsanpham.GetRowCellValue(grviewsanpham.FocusedRowHandle, "Id");
            Object  tenHang     = grviewsanpham.GetRowCellValue(grviewsanpham.FocusedRowHandle, "TenHang");
            Object  loaiHang    = grviewsanpham.GetRowCellValue(grviewsanpham.FocusedRowHandle, "LoaiHang");
            Object  ngaySanXuat = grviewsanpham.GetRowCellValue(grviewsanpham.FocusedRowHandle, "NgaySanXuat");
            Object  xuatXu      = grviewsanpham.GetRowCellValue(grviewsanpham.FocusedRowHandle, "XuatXu");
            Object  soLuong     = grviewsanpham.GetRowCellValue(grviewsanpham.FocusedRowHandle, "SoLuong");
            Object  hinhAnh     = Laylocation((int)id);
            Object  nhaCungCap  = grviewsanpham.GetRowCellValue(grviewsanpham.FocusedRowHandle, "NhaCungCap");
            Object  giaMua      = grviewsanpham.GetRowCellValue(grviewsanpham.FocusedRowHandle, "GiaMua");
            Object  giaBanLe    = grviewsanpham.GetRowCellValue(grviewsanpham.FocusedRowHandle, "GiaBan");
            Object  giaBanSi    = grviewsanpham.GetRowCellValue(grviewsanpham.FocusedRowHandle, "VAT");
            Object  khohang     = grviewsanpham.GetRowCellValue(grviewsanpham.FocusedRowHandle, "Khohang");
            Object  thuonghieu  = grviewsanpham.GetRowCellValue(grviewsanpham.FocusedRowHandle, "Thuonghieu");
            Sanpham sanpham     = new Sanpham()
            {
                Id          = int.Parse(id.ToString()),
                TenHang     = tenHang.ToString(),
                LoaiHang    = loaiHang.ToString(),
                NgaySanXuat = ngaySanXuat.ToString(),
                XuatXu      = xuatXu.ToString(),
                SoLuong     = int.Parse(soLuong.ToString()),
                HinhAnh     = hinhAnh,
                NhaCungCap  = nhaCungCap.ToString(),
                GiaMua      = long.Parse(giaMua.ToString()),
                GiaBan      = long.Parse(giaBanLe.ToString()),
                VAT         = int.Parse(giaBanSi.ToString()),
                Khohang     = khohang.ToString(),
                Thuonghieu  = thuonghieu.ToString()
            };
            Themsuasanpham themsuasanpham = new Themsuasanpham(sanpham);

            themsuasanpham.Show();
            themsuasanpham.khicapnhat += Themsuasanpham_khicapnhat;
        }