How To Check If A Key Is Pressed In C#

While developing applications in which you want your user to press some key and your application will do some work for your user, you need to detect if a key is pressed or released. In this article, I will show you how can you achieve that.

Instructions:

1. Open the project, click on any empty area on the form.
2. Ensure that Form is selected not a control if present on your Form.
3. In the Properties Window, click on the Lightening icon to open events for the Form.
4. Double click on KeyUP and KeyDown events to create event methods for these two.
   
5. Use the following code to detect if required key is pressed. // This Event will occurs when a key is pressed
private void Form1_KeyDown(object sender, KeyEventArgs e)
{           
if (e.KeyCode == Keys.Up)           
{
// Write your code for this key           
}
if (e.KeyCode == Keys.Down)
{
      // Write your code for this key
}
}

// This Event will occurs when a key is released
private void Form1_KeyUp(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Up)
{
      // Write your code for this key
}
if (e.KeyCode == Keys.Down)
{
      // Write your code for this key
}
}

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