Trapping Arrow Keys

Hi All,

It appears that in VB.Net Microsoft (In their infinite wisdom) has decided to make arrow keys act like the TAB key. In my application I need to know when the arrow keys are pressed when one of my UserControls has focus. Unfortunately, The arrow keys don't even raise the KeyDown event for my UserControl.

How do I get around this little problem?

Alan Liddle

You should override the IsInputKey function of the control. Imagining that you have a textbox as a contorl this my help

Code:

---

Public Class mytextbox
        Inherits System.Windows.Forms.TextBox

        Protected Overrides Function IsInputKey(ByVal keyData As System.Windows.Forms.Keys) As Boolean
            Select Case keyData
                Case Keys.Left
                    MsgBox("LEFT") ' Any code can go here
                    Return True
                Case Keys.Right
                    MsgBox("RIGHT") 'any code can go here
                    Retrun True
                Case Keys.Up
                    MsgBox("UP") 'any code can go here
                    Retrun True
                Case Keys.Down
                    MsgBox("DOWN") 'any code can go here
                    Retrun True
            End Select
            Return MyBase.IsInputKey(keyData)
        End Function

---

vb.net compiler says "Return" not decleared.

Oh sorry,
I just noticed that I have typed some of "Return"s as "Retrun" :( in the above code.

Thanks.