How to know if alt and ctrl are press?

Question

1.33/5 (3 votes)

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C#

good day guys. i want to know how will you find out if the ctrl + alt is press? any code for it?

Posted 28-Mar-11 18:32pm

Madzmar25

Updated 1-Apr-11 18:34pm

Brijesh Kr

v2

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4 solutions

Solution 2

C#

private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
    if (e.Control && e.Alt)
    {
        MessageBox.Show("Ctrl + Alt pressed");
    }
}

Posted 28-Mar-11 18:46pm

JF2015

Comments

Madzmar25 29-Mar-11 0:56am

i guess it only works when you have the textbox in focus right? i tried applying it on globalhook and i place it on delete key to check if the ctrl + alt is pressed but i failed i cant get it to check if the ctrl+alt is pressed

Solution 4

You can also have a look at this article that lets you detect if these keys are pressed even if your application is not in focus:
Processing Global Mouse and Keyboard Hooks in C#[^]

Posted 28-Mar-11 19:03pm

JF2015

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Prerak Patel · Accepted Answer · 2011-03-28T18:39:00

Solution 1

KeyEventArgs has 2 booleans for that - Alt and Control.

Use KeyDown event to check for that.

Posted 28-Mar-11 18:39pm

Prerak Patel

v2

Comments

Madzmar25 29-Mar-11 0:41am

how?

Prerak Patel 29-Mar-11 6:10am

Need more description from your side to answer your HOW

Brijesh Kr · Accepted Answer · 2011-03-28T18:56:00

Solution 3

C#

private void Form1_KeyDown(object sender, KeyEventArgs e)
       {

               if (e.Alt || e.Control)
               {
                // do somethings
               }

       }

Posted 28-Mar-11 18:56pm

Brijesh Kr