private void StockOutButton_Click(object sender, EventArgs e)
        {
            StockOutForm stockOutForm = new StockOutForm();

            stockOutForm.Show();
            this.Hide();
        }
 //录入出货单
 private void toolIntoStock_Click(object sender, EventArgs e)
 {
     var db = new BathDBDataContext(LogIn.connectionString);
     StockOutForm inStockForm = new StockOutForm(db,null);
     if (inStockForm.ShowDialog() == DialogResult.OK)
         dgv_show();
 }
        private void toolEdit_Click(object sender, EventArgs e)
        {
            if (dgv.CurrentCell != null)
            {
                  int stockoutid;
                try
                {
                    stockoutid = Convert.ToInt32(dgv.CurrentRow.Cells[0].Value);
                }
                catch (System.Exception ex)
                {
                    MessageBox.Show("请选择一种商品!");
                    return;
            }

                var db = new BathDBDataContext(LogIn.connectionString);
                StockOut stkout = db.StockOut.FirstOrDefault(x => x.id == stockoutid);
                if (stkout!=null)
                {
                    StockOutForm editstockoutform = new StockOutForm(db, stkout);
                    if (editstockoutform.ShowDialog()==DialogResult.OK)
                         dgv_show();
                }

            }
            else
                MessageBox.Show("请先选择一行!");
        }