POS Display Text Marquee

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POS.NET

I have to make the text moving(Marquee Text) in the Pole Display.
I've used the following code

public Form1()
{
    InitializeComponent();
    myExplorer = new PosExplorer(this);
    device1 = myExplorer.GetDevice("LineDisplay", "POSIFLEX_LINEDISPLAY");

    try
    {
        myDisplay = (LineDisplay)myExplorer.CreateInstance(device1);
        myDisplay.Open();
        myDisplay.Claim(1000);
        myDisplay.DeviceEnabled = true;
        myDisplay.DisplayText("Welcome to the Restaurant");
        myDisplay.MarqueeType = DisplayMarqueeType.Left;
        myDisplay.MarqueeFormat = DisplayMarqueeFormat.Walk;
        ////myDisplay.MarqueeType = DisplayMarqueeType.Left;
        ////myDisplay.MarqueeFormat = DisplayMarqueeFormat.Walk;

        statusLabel.Text = "Line Display Ready";
        myDisplay.Close();
    }
    catch
    {
        statusLabel.Text = "Line Display Not Found!";
    }
}

It is a two line display unit. But the marquee effect(text moving) not working. Can anyone help me on this?

Then I've use following methods to do it, but I'm struggling in the timer control.

private static string GetDisplayStringSplitByIndex(string displayString, int index)
{
    return Form1.GetPaddedStringForDisplay(displayString.Substring(index) + displayString.Substring(0, index));
}

private static string GetPaddedStringForDisplay(string displayString)
{
    if (displayString.Length > Form1.displayLineWidth)
    {
        return displayString.Substring(0, Form1.displayLineWidth);
    }
    else
    {
        return displayString.PadRight(Form1.displayLineWidth);
    }
}

Need help.

Thanks in advance.