using Label control to create looping marquee text in c# winform

Question

I have been create Marquee text using Label control her is sample code

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;
        }
    }

but when the first time was finished, it didn't continues work .Please help me!

Answer 1

In timer1_Tick change

if (xPos == 0)

to

if (xPos <= 0)

Otherwise it won't work if this.Width is odd.

Answer 2

我认为您需要检查xPos <=0。因为如果在xPos-= 2之后xPos = 1，则您的xPos将等于-1