//删除商品 private void benDeleteCategory_Click(object sender, EventArgs e) { if (dgvCategoryInfo.SelectedRows.Count > 0) { int id = Convert.ToInt32(dgvCategoryInfo.SelectedRows[0].Cells[0].Value); //根据id删除选中的行 CategoryInfoBLL bll = new CategoryInfoBLL(); string msg = bll.DeleteCategoryById(id) ? "操作成功" : "操作失败"; MessageBox.Show(msg); LoadCategoryInfoByDelFlag(0); } else { MessageBox.Show("请选中要删除的行!"); } }