private void AddButton_Click(object sender, EventArgs e)
        {
            try
            {
                _item.Name  = nameTextBox.Text;
                _item.Price = Convert.ToInt32(priceTextBox.Text);
                DataTable isSearch = _orderManager.SearchOrder(_item);
                if (isSearch.Rows.Count > 0)
                {
                    //  customerDataGridView.DataSource = _customerManager.SearchCustomer(searchTextBox.Text);
                    MessageBox.Show("Item Name Exists");
                }


                else
                {
                    bool isAdded = _orderManager.AddInfo(_item);
                    MessageBox.Show("Saved");
                }
            }
            catch (Exception exception)
            {
                MessageBox.Show(exception.Message);
            }
        }
        private void AddButton_Click(object sender, EventArgs e)
        {
            DataTable isSearch = _orderManager.SearchOrder(nameTextBox.Text);

            if (isSearch.Rows.Count > 0)
            {
                //  customerDataGridView.DataSource = _customerManager.SearchCustomer(searchTextBox.Text);
                MessageBox.Show("Item Name Exists");
            }


            else
            {
                bool isAdded = _orderManager.AddInfo(nameTextBox.Text, Convert.ToInt32(priceTextBox.Text));
                MessageBox.Show("Saved");
            }
        }