//删除房间的时候
private void button3_Click(object sender, EventArgs e)
{
//选中
if (dgvRoomInfo.SelectedRows.Count > 0)
{
if (DialogResult.OK == MessageBox.Show("是否删除", "删除", MessageBoxButtons.OKCancel))
{
//开始删除
int id = Convert.ToInt32(dgvRoomInfo.SelectedRows[0].Cells[0].Value);
DeskInfoBLL bll = new DeskInfoBLL();
//有正在使用的餐桌
if (Convert.ToInt32(bll.GetDeskState(id)) > 0)
{
MessageBox.Show("有餐桌正在使用不能删除");
}
else
{
//删除房间,删除该房间下的餐桌
RoomInfoBLL rbll = new RoomInfoBLL();
//判断一个该房间下是否有餐桌,有就删,没有就直接删房间
if (bll.DeleteDesk(id) && rbll.DeleteRoomById(id))
{
MessageBox.Show("操作成功");
LoadRoomInfoByDelFlag(0);
LoadDeskInfoByDelFlag(0);
}
else
{
MessageBox.Show("操作失败");
}
}
}
}
}
//删除
private void btnDelete_Click(object sender, EventArgs e)
{
if (dgvDeskInfo.SelectedRows.Count > 0)
{
//删除餐桌的时候要判断该餐桌是否被使用
int id = Convert.ToInt32(dgvDeskInfo.SelectedRows[0].Cells[0].Value);
//省略了
DeskInfoBLL bll = new DeskInfoBLL();
string str = bll.DeleteDesk(id) ? "操作成功" : "操作失败";
MessageBox.Show(str);
LoadDeskInfoByDelFlag(0);
}
}