what is the key code of alt key

Question

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C#

i would like to know the ascii value of alt key

Posted 6-Aug-12 0:57am

Anand Arul K

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5 solutions

Solution 2

The alt key doesn't have an ASCII representation. It's a virtual key code, and they don't actually correspond to any characters. Have a read of this[^] article for more information.

Posted 6-Aug-12 1:06am

Pete O'Hanlon

Solution 3

Check this.

http://msdn.microsoft.com/en-us/library/system.windows.forms.keyeventargs.alt.aspx[^]

Posted 6-Aug-12 1:10am

Santhosh Kumar Jayaraman

Solution 5

The ALT key does not have an ASCII value: it is a modifier key and does't not affect ASCII values.

Put this code in keydown even in control or form

Messagebox.show(e.KeyCode.ToString());

You will get answer yourself....

Any query contact me through mail.
[Removed]

myfrnz.tk

Arun Vasu
Kerala.

Posted 6-Aug-12 2:55am

Arun Vasu

Updated 6-Aug-12 4:28am

v2

Comments

lewax00 6-Aug-12 10:30am

Please don't post your email here, you're only inviting spam. And you will receive an email when your post is replied to anyways.

Solution 6

Because the ALT key doesn't have a ASCII value,
you can use this code if you want to know
when the ALT key is pressed (in Windows Forms):

C#

public Form1()
{
       // design your form
       // after all design methods, add a KeyEventHandler:
       this.KeyDown += new KeyEventHandler(Form1_KeyDown);
}
void Form1_KeyDown(object sender, KeyEventArgs e)
{
       if (e.Alt)
       {
           MessageBox.Show("Alt key pressed");
       }
}

Posted 6-Aug-12 5:35am

Thomas Daniels

Updated 8-Aug-12 5:11am

v4

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OriginalGriff · Accepted Answer · 2012-08-06T01:05:00

The ALT key does not have an ASCII value: it is a modifier key and doesn't not affect ASCII values.

If you want to know if the ALT key is pressed, use Control.Keys in Winforms:

C#

if ((Control.ModifierKeys & Keys.Alt) != 0)
    {
    MessageBox.Show("AltDown");
    }

In web, you can't tell at all - it does not leave the browser (and the end equipment may not even have an ALT key).