KeyDown event not Working on PrintScreen Key

Question

I am using C# windows Application

I am checking which key, user have pressed down by keyboard. I have checked for all keys but its not working in case of printScreen

private void comboBox1_KeyDown(object sender, KeyEventArgs e)
{
        MessageBox.Show(e.KeyCode.ToString());
}

So how to detect PrintScreen Key

Is it mandatory to detect printscreen with keydown? it is captured by keyup! — , Nov 27 '10 at 17:50
The thing is I have the same issue, and I am using the KeyUp event. When I make a new Silverlight app, I can catch the print screen key. But in my old Silverlight app that has some Telerik components in it, this is not working any clue why this is so? — Rumplin, Mar 06 '11 at 08:21

score 12 · Accepted Answer · edited Feb 20 '12 at 12:28

12

You can use KeyUp, It captures PrintScreen key.

edited Feb 20 '12 at 12:28

Sastrija

answered Nov 27 '10 at 18:05

score 7 · Answer 2 · answered Nov 27 '10 at 17:48

7

The print-screen key is trapped by the OS before it is sent to applications. To detect such keys, you need to use a keyboard hook. You may be interested in this article: Low-level Windows API hooks from C# to stop unwanted keystrokes

answered Nov 27 '10 at 17:48

casablanca

Mayur Dhingra · Answer 3 · 2013-12-04T05:45:07.410

3

You can use

e.Key == Key.Snapshot

This will work on KeyUp event

edited Dec 04 '13 at 05:45

answered Feb 06 '13 at 17:58

Mayur Dhingra

i asked this ques when i use .net 2.0 framework and i guess this wouldn't work there – Javed Akram Feb 11 '13 at 13:47
@CainKellye Yes with .net framework 3.5 and above it does not work, you have to use KeyUp event only. – Mayur Dhingra May 03 '13 at 11:13

score 0 · Answer 4 · edited Jun 05 '14 at 07:43

0

If the KeyUp event still does not work try modifying the forms KeyPreview property to true, then test the the KeyUp event again.

edited Jun 05 '14 at 07:43

DIF

answered Jun 05 '14 at 07:21

Saechel

4 Answers4