How to use keyboard right and left arrow keys in my application

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C#

C#4.0

How can i use the keyboard right and left arrow keys in my application instead of click the
yes or no buttons

Posted 23-Apr-12 1:12am

siri2012

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VJ Reddy · Answer 1 · 2012-04-23T01:17:00

The KeyDown event as explained here
http://msdn.microsoft.com/en-us/library/system.windows.forms.control.keydown.aspx[^]
can be used for this purpose.
To capture the key pressed before it is passed on to any control on the form,
KeyPreview property of Form can be set to True, which indicates that the form will receive key events before the event is passed to the control that has focus as explained here
http://msdn.microsoft.com/en-us/library/system.windows.forms.form.keypreview.aspx[^]

Nilesh Patil Kolhapur · Answer 2 · 2012-04-23T01:18:00

Solution 2

hey,

try this

C#

protected override bool ProcessCmdKey(ref Message msg, Keys keyData) {
        if (keyData == Keys.Left) {
            Console.WriteLine("left");
            return true;
        }
        // etc..
        return base.ProcessCmdKey(ref msg, keyData);
    }

Best Luck

Posted 23-Apr-12 1:18am

Nilesh Patil Kolhapur

Comments

siri2012 24-Apr-12 6:04am

private void Form1_KeyDown(object sender, KeyEventArgs e)
{

if (e.KeyCode = Keys.Left)//getting error here
{
System.Windows.Forms.MessageBox.Show("left key pressed");
}
else if (e.KeyCode = Keys.Right) //getting error here
{
System.Windows.Forms.MessageBox.Show("right key pressed");
}

// Keys.Left -

-Cannot implicitly convert type 'System.Windows.Forms.Keys' to 'bool'

//e.KeyCode

--Property or indexer 'System.Windows.Forms.KeyEventArgs.KeyCode' cannot be assigned to -- it is read only
}