跑马灯效果

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

 

namespace Test_01

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        int n = 1;

        string str = "欢迎光临麦当劳";

        private void timer_Tick(object sender, EventArgs e)

        {

            switch (n)

            {

                case 1:

                    this.labMessage.ForeColor = Color.Red;

                    n = 2;

                    break;

                case 2:

                    this.labMessage.ForeColor = Color.Yellow;

                    n = 3;

                    break;

                case 3:

                    this.labMessage.ForeColor = Color.Blue;

                    n = 4;

                    break;

                case 4:

                    this.labMessage.ForeColor = Color.Green;

                    n = 5;

                    break;

                case 5:

                    this.labMessage.ForeColor = Color.Olive;

                    n = 1;

                    break;

            }

            string s = str.Substring(0, 1);

            string s2 = str.Remove(0, 1);

            str = s2 + s;

            this.labMessage.Text = str;

        }

    }

}