Silverlight 5

WinRT

public sealed class Dispatcher
public DispatcherOperation BeginInvoke(Action a);
public DispatcherOperation BeginInvoke(Delegate d, Object args);
public Boolean CheckAccess();

public sealed class DispatcherOperation

public sealed class DispatcherSynchronizationContext
: SynchronizationContext
public virtual SynchronizationContext CreateCopy();
public virtual void Post(SendOrPostCallback d, Object state);
public virtual void Send(SendOrPostCallback d, Object state);

public class DispatcherTimer	public class DispatcherTimer
: IManagedPeer, IManagedPeerBase, INativeCoreTypeWrapper	: __ComObject, IDispatcherTimer
public TimeSpan Interval { get; set; }	public virtual TimeSpan Interval { get; set; }
public Boolean IsEnabled { get; }	public virtual Boolean IsEnabled { get; }
public event EventHandler Tick;	public virtual event EventHandler Tick;
public void Start();	public virtual void Start();
public void Stop();	public virtual void Stop();