DependencyObject description from metadata

    public class DependencyObject : IDependencyObject, IDependencyObject2

    {

        //

        // Summary:

        //     Provides base class initialization behavior for Windows.UI.Xaml.DependencyObject

        //     derived classes.

        protected DependencyObject();

        //

        // Summary:

        //     Returns the current effective value of a dependency property from a Windows.UI.Xaml.DependencyObject.

        //

        // Parameters:

        //   dp:

        //     The Windows.UI.Xaml.DependencyProperty identifier of the property for which to

        //     retrieve the value.

        //

        // Returns:

        //     Returns the current effective value.

        public object GetValue(DependencyProperty dp);

        //

        // Summary:

        //     Sets the local value of a dependency property on a Windows.UI.Xaml.DependencyObject.

        //

        // Parameters:

        //   dp:

        //     The identifier of the dependency property to set.

        //

        //   value:

        //     The new local value.

        public void SetValue(DependencyProperty dp, object value);

        //

        // Summary:

        //     Clears the local value of a dependency property.

        //

        // Parameters:

        //   dp:

        //     The Windows.UI.Xaml.DependencyProperty identifier of the property for which to

        //     clear the value.

        public void ClearValue(DependencyProperty dp);

        //

        // Summary:

        //     Returns the local value of a dependency property, if a local value is set.

        //

        // Parameters:

        //   dp:

        //     The Windows.UI.Xaml.DependencyProperty identifier of the property for which to

        //     retrieve the local value.

        //

        // Returns:

        //     Returns the local value, or returns the sentinel value Windows.UI.Xaml.DependencyProperty.UnsetValue

        //     if no local value is set.

        public object ReadLocalValue(DependencyProperty dp);

        //

        // Summary:

        //     Returns any base value established for a dependency property, which would apply

        //     in cases where an animation is not active.

        //

        // Parameters:

        //   dp:

        //     The identifier for the desired dependency property.

        //

        // Returns:

        //     The returned base value.

        public object GetAnimationBaseValue(DependencyProperty dp);

        //

        // Summary:

        //     Registers a notification function for listening to changes to a specific Windows.UI.Xaml.DependencyProperty

        //     on this Windows.UI.Xaml.DependencyObject instance.

        //

        // Parameters:

        //   dp:

        //     The dependency property identifier of the property to register for property-changed

        //     notification.

        //

        //   callback:

        //     A callback based on the Windows.UI.Xaml.DependencyPropertyChangedCallback delegate,

        //     which the system invokes when the value of the specified property changes.

        //

        // Returns:

        //     A token that represents the callback, used to identify the callback in calls

        //     to Windows.UI.Xaml.DependencyObject.UnregisterPropertyChangedCallback(Windows.UI.Xaml.DependencyProperty,System.Int64).

        public long RegisterPropertyChangedCallback(DependencyProperty dp, DependencyPropertyChangedCallback callback);

        //

        // Summary:

        //     Cancels a change notification that was previously registered by calling Windows.UI.Xaml.DependencyObject.RegisterPropertyChangedCallback(Windows.UI.Xaml.DependencyProperty,Windows.UI.Xaml.DependencyPropertyChangedCallback).

        //

        // Parameters:

        //   dp:

        //     The dependency property identifier of the property to unregister for property-changed

        //     notification.

        //

        //   token:

        //     A token that represents the callback (returned by Windows.UI.Xaml.DependencyObject.RegisterPropertyChangedCallback(Windows.UI.Xaml.DependencyProperty,Windows.UI.Xaml.DependencyPropertyChangedCallback)

        //     ).

        public void UnregisterPropertyChangedCallback(DependencyProperty dp, long token);

        //

        // Summary:

        //     Gets the Windows.UI.Core.CoreDispatcher that this object is associated with.

        //     The Windows.UI.Core.CoreDispatcher represents a facility that can access the

        //     Windows.UI.Xaml.DependencyObject on the UI thread even if the code is initiated

        //     by a non-UI thread.

        //

        // Returns:

        //     The Windows.UI.Core.CoreDispatcher that Windows.UI.Xaml.DependencyObject object

        //     is associated with, which represents the UI thread.

        public CoreDispatcher Dispatcher { get; }

    }