private void timer8_Tick(object sender, EventArgs e)
{
counter8--;
if (counter8 == 0)
{
timer8.Stop();
Console.Beep(5000, 1000);
Btn9.PerformClick();
}
LblCounter.Text = counter8.ToString();
}
// Keyboard Keys Events.
private void Calculator_KeyDown(object sender, KeyEventArgs e)
{
// Using Switch To Perform Various Key Events.
switch (e.KeyCode)
{
case Keys.NumPad1: { Btn1.PerformClick(); break; }
case Keys.NumPad2: { Btn2.PerformClick(); break; }
case Keys.NumPad3: { Btn3.PerformClick(); break; }
case Keys.NumPad4: { Btn4.PerformClick(); break; }
case Keys.NumPad5: { Btn5.PerformClick(); break; }
case Keys.NumPad6: { Btn6.PerformClick(); break; }
case Keys.NumPad7: { Btn7.PerformClick(); break; }
case Keys.NumPad8: { Btn8.PerformClick(); break; }
case Keys.NumPad9: { Btn9.PerformClick(); break; }
case Keys.NumPad0: { Btn0.PerformClick(); break; }
case Keys.Back: { BackBtn.PerformClick(); break; }
case Keys.Add: { BtnPlus.PerformClick(); break; }
case Keys.Subtract: { BtnMinus.PerformClick(); break; }
case Keys.Divide: { BtnDivision.PerformClick(); break; }
case Keys.Multiply: { BtnMultiple.PerformClick(); break; }
case Keys.Decimal: { BtnPoint.PerformClick(); break; }
case Keys.Oemplus: { BtnEquals.PerformClick(); break; }
case Keys.H: { vh.Show(); break; }
default: break;
}
}