Hi

I have a list box list but right now a user can use the up arrow key, down arrow key and even the right and left arrow key(don't understand why a person can use the the right and left key since it is a single column list).

Anyways I want to disable their use of the right and left arrow key but I am unsure how to do this.

I also have another program if a user clicks on the down arrow and up arrow at the same time it will basically crash my program because it seems not to know which way to go.

How can I make it so it just takes the first one clicks or just disregards the click if both of them where hit at the exact same time.

Thanks

You can inherit from listbox,then override the OnKeyDown event,like below:
protected override void OnKeyDown(KeyEventArgs e)
        {
            e.SuppressKeyPress = true;
            switch (e.KeyData)
            {
                case Keys.D0:
                case Keys.OemPeriod:
                case Keys.Decimal:
                    if (this.InputType == NordaBaseInputType.Float)
                        e.SuppressKeyPress = false;
                    break;
                default:
                    break;
            }
            base.OnKeyDown(e);
        }
this is a script of my program

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How can you receive two key strokes at a time ? Os allows only one key stroke input per CPU Cycle.

dev(1);

Well thats what I think the problem is but the debugger showed it as 2 separate calls so I don't know why it freezes then.