private void searchButton_Click(object sender, EventArgs e)
{
if (IDtextBox.Text == "")
{
MessageBox.Show("Please, fill the field!");
}
else
{
if (!int.TryParse(IDtextBox.Text, out int result))
{
MessageBox.Show("Value entered is too large!");
}
else
{
if (InvoiceLogic.IsInvoiceExists(result) == -1)
{
MessageBox.Show("Invoice does not exist!");
}
else
{
textLabel.Text = InvoiceLogic.GetByID(int.Parse(IDtextBox.Text)).ToString();
}
}
}
}
