KeyDown Event C# WinForm

[jmccomic]

I am trying scroll horizontal scroll bars with the left and right arrow keys. I have tried registering the KeyDown and OnKeyDown events but with no success. Any help will be greatly appreciated.

[Plater]

Which control are you attaching the keydown event listeners?

[jmccomic]

Which control are you attaching the keydown event listeners?

I have UserControl that is DockStyle Fill on a Form. I am attaching the keydown events to the UserControl. Like this: ("this" is the UserControl)

protected override void OnKeyDown(KeyEventArgs e)
{
if (e.KeyValue == Keys.Right)
this.HorizontalScroll.Value = this.HorizontalScroll.Minimum;
else if (e.KeyValue == Keys.Left)
this.HorizontalScroll.Value = this.HorizontalScroll.Maximum;
base.OnKeyDown(e);
}

[rjvrnjn]

I have UserControl that is DockStyle Fill on a Form. I am attaching the keydown events to the UserControl. Like this: ("this" is the UserControl)

Have you set the form's KeyPreview property to True? If not, the key events will not be trapped.

[jmccomic]

Have you set the form's KeyPreview property to True? If not, the key events will not be trapped.

Sorry about that the UserControl is inside of a panel and the panel is on the form. I did set the form's KeyPreview property to true but did not seem to help.

[Plater]

If you user control has the focus it should work.
If the focus is on a textbox or some other control that would normally handle arrow keys, I think it will fail.
Also, isn't your logic backwards on that? You have the Right arrow key scroll left and the Left arrow key scrolling right.

Have you checked to see if that event is even getting fired? Maybe the key you are pressing shows up as a different key?

[jmccomic]

If you user control has the focus it should work.
If the focus is on a textbox or some other control that would normally handle arrow keys, I think it will fail.
Also, isn't your logic backwards on that? You have the Right arrow key scroll left and the Left arrow key scrolling right.

Have you checked to see if that event is even getting fired? Maybe the key you are pressing shows up as a different key?

Thanks, the logic was backwards and I was also having a focus issue. Thanks again for all of the help.