private void RandomNumberButton_Click(object sender, EventArgs e) { if (String.IsNullOrWhiteSpace(tbMinimum.Text) || String.IsNullOrWhiteSpace(tbMaximum.Text)) { WarningNotice.Null(); return; } if (!(int.TryParse(tbMinimum.Text, out _) && int.TryParse(tbMaximum.Text, out _))) { if (long.TryParse(tbMinimum.Text, out _) || long.TryParse(tbMaximum.Text, out _)) { WarningNotice.IsLongType(); return; } WarningNotice.NotNumber(); return; } if (int.Parse(tbMinimum.Text) > int.Parse(tbMaximum.Text)) { WarningNotice.MinAndMaxNumber(); } tbRandomNumberResult.Text = RandomCode.GetRandomNumber(int.Parse(tbMinimum.Text), int.Parse(tbMaximum.Text)).ToString(); }