Determine whether modifier key was pressed

Question

I know how to obtain which modifier key was pressed in C# but I don't know how I can actually check if any modifier key was pressed. I need to check it in KeyUp event, is it possible any other way than doing something like if(e.KeyCode != Keys.Control && e.KeyCode != Keys.Alt && ...) ? Thanks.

score 12 · Accepted Answer · edited May 23 '17 at 11:44

12

if ((Control.ModifierKeys & Keys.Shift) != 0)

will help you detect whether a modifier key (e.g. ctrl or shift) was pressed. Check the Post below for reference:

How to detect the currently pressed key?

edited May 23 '17 at 11:44

Community

1
1

answered Apr 08 '11 at 18:42

reggie

13,313
13
41
57

Replace the "&&" operator with the correct "&" operator. ("Error: Operator '&&' cannot be applied to operands of type 'System.Windows.Forms.Keys' and 'System.Windows.Forms.Keys') – TechAurelian Nov 22 '12 at 12:29

score 3 · Answer 2 · answered Dec 03 '15 at 14:58

3

To make sure no modifier key is pressed you can check if ModifierKey equals Keys.None.

if (ModifierKeys == Keys.None) ...

answered Dec 03 '15 at 14:58

caycothu

31
2

score 1 · Answer 3 · answered Apr 08 '11 at 18:46

1

The KeyEventArgs class has properties that you can check. For example, to see if the Alt key was pressed, you can write:

if (e.Alt)
{
    // Alt key was pressed
}

answered Apr 08 '11 at 18:46

Jim Mischel

131,090
20
188
351

Determine whether modifier key was pressed

3 Answers3

Linked