Left alt + C not working in WPF

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hi, I wrote the following code for Alt+C ShotCut

C#

private void Window_KeyDown_1(object sender, KeyEventArgs e)
{
    if (e.Key == Key.C && (Keyboard.Modifiers & (ModifierKeys.Alt)) == (ModifierKeys.Alt))
        MessageBox.Show("DONE");
}

its working good for "right alt"
But it fails for "Left alt" please help me to solve the problem

What I have tried:

C#

private void Window_KeyDown_1(object sender, KeyEventArgs e)
{
    if (e.Key == Key.C && (Keyboard.Modifiers & (ModifierKeys.Alt)) == (ModifierKeys.Alt))
        MessageBox.Show("DONE");
}

Posted 29-Mar-16 1:49am

Member 10296413

Updated 29-Mar-16 2:02am

VR Karthikeyan

v2

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CHill60 · Accepted Answer · 2016-03-29T02:02:00

You need to check SystemKey for the Alt key (the right "Alt" key is often actually "Alt Gr" (Alt Graphics) and not recognised as the System key which is why that one works when the left one doesn't).

E.g. Try

C#

var key = (e.Key == Key.System ? e.SystemKey : e.Key);
if (key == Key.C && (Keyboard.Modifiers & (ModifierKeys.Alt)) == (ModifierKeys.Alt))
    MessageBox.Show("DONE");

(Adapted from a solution by Julien Lebosquain at this post[^])