With Windows Phone 7 you should use the
DispatcherTimer
found in the
System.Windows.Threading
namespace. Then you just add a method to it's
Tick EventHandler
System.Windows.Threading.DispatcherTimer dt = new System.Windows.Threading.DispatcherTimer();
dt.Tick += new EventHandler(Tick);
dt.Start();
void Tick(object sender, EventArgs e)
{
}
hope this helps