C# TimeOut Method

Question

I have the following code but it is not executing for the TimeOut object for inactivity

private void Form1_Load(object sender, EventArgs e)
{
    Console.WriteLine("booting up....");

    programController.init(this);

    disableFetchSetData();
    label3.Hide();
    logoutButton.Hide();

    //Added Timer Object to log out of program
    Timer MyTimer = new Timer();
    MyTimer.Interval = (10 * 60 * 1000); // 10 mins
    MyTimer.Tick += new EventHandler(TimeOut);
    MyTimer.Start();
}
     

public void TimeOut(object sender, EventArgs e)
{
    
    MessageBox.Show("The form will now close due to inactivity");
    this.Close();
}

Why is this? It is supposed to execute from the Load() of the Form. Since the TimeOut method is an event, it is called upon the Load of the Form.