private void btnSubmit_Click(object sender, EventArgs e)
{
if (txtQuantity.Text.All(Char.IsDigit) && (!(String.IsNullOrWhiteSpace(txtQuantity.Text))))
{
GeneralMethods.UpdatePurchaseOrderTransactionQuantity(ID, Convert.ToInt32(txtQuantity.Text));
MessageBox.Show("Successfully updated!", "Success");
this.Close();
}
else if (!(txtQuantity.Text.All(Char.IsDigit)))
{
MessageBox.Show("Quantity must only contain numbers!", "Error");
}
else
{
MessageBox.Show("Field cannot be left empty!");
}
}
