Visual Basic Key Listener

I am trying to wr开发者_如何学运维ite a program in Visual Basic (with VS 2010) that will respond to the arrow keys. I am aware that there are key listener in Java but not sure if such thing exist in VB and how to code it. Please show me some example on this. Thanks.

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If you are doing winforms then set the KeyPreview property of the form to true and then set the KeyDown event. Your code will be like this:

Dim previousKey As Keys? = Nothing

Private Sub Form1_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown
    If e.KeyCode = Keys.Up Then
        'up arrow
    End If


    If e.KeyCode = Keys.Left Then
        'left arrow
        If Not previousKey Is Nothing And previousKey = Keys.Up Then
            'Up arrow and then Left Arrow
            MessageBox.Show("there, that's better")
        End If
    End If

    If e.KeyCode = Keys.Right Then
        'right arrow
    End If

    If e.KeyCode = Keys.Down Then
        'down arrow
    End If

    'After everything is done set the current key as the previous key.
    previousKey = e.KeyCode
End Sub