使用Label控件在c#winform中创建循环字幕文本

我一直在使用标签控件创建Marquee文本，她是示例代码

public partial class FrmMarqueeText : Form
{
    private int xPos = 0, YPos = 0;
    public FrmMarqueeText()
    {
        InitializeComponent();
    }
    private void FrmMarqueeText_Load(object sender, EventArgs e)
    {
            lblText.Text = "Hello this is marquee text";
            xPos = lblText.Location.X;
            YPos = lblText.Location.Y;
            timer1.Start();

    }
    private void timer1_Tick(object sender, EventArgs e)
    {
        if (xPos == 0)
        {
            this.lblText.Location = new System.Drawing.Point(this.Width, YPos);
            xPos = this.Width;
        }
        else
        {
            this.lblText.Location = new System.Drawing.Point(xPos, YPos);
            xPos -= 2;
        }
    }

但当第一次完成时，它并没有继续工作。请帮帮我！