C#

public partial class Form1 : Form
    {
        char charTemp;
        string tempMessage = "";
        string message = "";
        TimerCallback timeCB;
        System.Threading.Timer timer;        

        public Form1()
        {
            InitializeComponent();
        }

        public void scrollText(object state)
        {
            message = label1.Text;

            charTemp = message[0];

            for (int i = 0; i < message.Length - 1; i++)
            {
                tempMessage += message[i + 1];
            }
            tempMessage += charTemp;
            label1.Text = tempMessage;
            tempMessage = "";
        }

        private void Form1_Shown(object sender, EventArgs e)
        {
            timeCB = new TimerCallback(scrollText);
            timer = new System.Threading.Timer(timeCB, null, 0, 1000);
        }
    }