private void Navigate()
{
var parameters = Parameters.ToDictionary(x => x.ParameterName, x => x.Value);
var navigator = NavigationProperties.GetNavigator(AssociatedObject);
if (navigator == null)
{
throw new ImpossibleNavigationRequestException("The Navigator for this UI element is not avaialable. Please ensure the current view has been loaded into a frame, or that the NavigationProperties.Navigator attached property has been set.");
}
var request = new RouteValueDictionary(parameters);
PrepareRequest(request);
navigator.ProcessRequest(new NavigationRequest(request));
}
/// <summary>
/// Creates an <see cref="INavigator"/> bound to the navigation service that owns a given source
/// element. This method can be called multiple times for the same <paramref name="sourceElement"/>.
/// </summary>
/// <param name="sourceElement">A UI element that lives inside the frame that you want a navigator
/// for.</param>
/// <returns>
/// An instance of the <see cref="INavigator"/> interface which can be used for navigation.
/// </returns>
public INavigator GetOwningNavigator(UIElement sourceElement)
{
Guard.ArgumentNotNull(sourceElement, "sourceElement");
var existingNavigator = NavigationProperties.GetNavigator(sourceElement);
if (existingNavigator != null)
{
return(existingNavigator);
}
Func <INavigationService> lazyFrameGetter = () =>
{
var frame = null as Frame;
DependencyObject parent = sourceElement;
while (parent != null)
{
frame = parent as Frame;
if (frame != null)
{
break;
}
parent = VisualTreeHelper.GetParent(parent);
}
if (frame == null)
{
throw new ImpossibleNavigationRequestException("The Navigator for this UI element is not avaialable. Please ensure the current view has been loaded into a frame, or that the NavigationProperties.Navigator attached property has been set.");
}
var wrapper = new FrameNavigationServiceWrapper(sourceElement.Dispatcher, frame);
return(wrapper);
};
return(NewNavigator(lazyFrameGetter, null));
}