how to kill tabtip process after starting it

Question

I can start tabtip (virtual keyboad) in my program but for some reason I can't kill it.

This is my code:

Private tabtipProcess As Process

Private Sub t_Enter(sender As Object, e As EventArgs)
    tabtipProcess = Process.Start("tabtip")
End Sub

Private Sub t_Leave(sender As Object, e As EventArgs)
    tabtipProcess.Kill()
End Sub

On the line tabtipProcess.Kill() I get this error:

Cannot process request because the process (5312) has exited.

Answer 1

i'v got it:

For Each pkiller As Process In Process.GetProcesses
        If String.Compare(pkiller.ProcessName, "tabtip", True) = 0 Then
            pkiller.Kill()
        End If
    Next