Question

Hi every one i have a phenomenal situation.
My firstly code like this :

public MainPage()
    {
        // Required to initialize variables
        InitializeComponent();
        Intro I = new Intro();
        I.BuatUI();
        LayoutRoot.Children.Add(I.GridIntro);

    }

But when i add dispatcher timer.
My silverlight program not work. only out a loading and never come the main program

private DispatcherTimer generalTimer;

    public MainPage()
    {
        // Required to initialize variables
        InitializeComponent();
        Intro I = new Intro();
        I.MakeUI();
        LayoutRoot.Children.Add(I.GridIntro);
        generalTimer.Interval = TimeSpan.FromSeconds(2);
        generalTimer.Start();
        generalTimer.Tick += new EventHandler(delegate(object s, EventArgs a)
            {
                LayoutRoot.Children.Remove(I.GridIntro);
                IsiIdentitas();
                generalTimer.Stop();
            });
    }

In my visual studio the private DispatcherTimer generalTimer have green line it said the generalTimer never used.

please help me solve my problem

Answer 1

You’re never assigning a value to generalTimer, so it will still be null when you try to use it. Try this:

generalTimer = new DispatcherTimer();

just before you start assigning values to the properties (or at the point of declaration).