private void OK_Button_Click(object sender, EventArgs e) { double temp; if (double.TryParse(CashTextBox.Text, out temp)) { Payment = double.Parse(CashTextBox.Text); if (Payment >= TotalAmount) { DialogResult = System.Windows.Forms.DialogResult.OK; } else { CashTextBox.Focus(); CashTextBox.BackColor = Color.DeepPink; } } else { Payment = 0; } }
private void InitForm() { CashTextBox.Focus(); CashTextBox.Select(); }