void UnregisterRegionManagers(DependencyObject view, UnregisterBehavior behavior)
{
if (view != null)
{
if (this.HoldsRegionManager(view))
{
var manager = this.regionManagers[view];
manager.Shutdown();
this.regionManagers.Remove(view);
}
if (this.closableObjects.Contains(view))
{
this.closableObjects.Remove(view);
}
if (behavior == UnregisterBehavior.WholeLogicalTreeChain)
{
#if SILVERLIGHT
var children = LogicalTreeHelper.GetChildren((FrameworkElement)view);
#else
var children = LogicalTreeHelper.GetChildren(view);
#endif
foreach (var child in children)
{
this.UnregisterRegionManagers(child as DependencyObject, behavior);
}
}
}
}
/// <summary>
/// Unregisters the region manager owned by the supplied owner.
/// </summary>
/// <param name="owner">The owner of the region manager to unregister.</param>
/// <param name="behavior">How to manage reguion manager found in child/nested views.</param>
/// <exception cref="NotSupportedException">A NotSupportedException is raised if this service has no region manager registered for the supplied owner. Use HoldsRegionManager() to test.</exception>
public void UnregisterRegionManager(DependencyObject owner, UnregisterBehavior behavior)
{
if (!this.HoldsRegionManager(owner))
{
throw new NotSupportedException();
}
this.UnregisterRegionManagers(owner, behavior);
}
