Hi
Richard,
What I can suggest you would to implement a custom attached property that will be hooking to the event and executing a custom command in the ViewModel. So the attached property should be defined the following way:
public class GanttHelper
{
static RadGanttView myGantt;
public static bool GetIsEnabled(DependencyObject obj)
{
return (bool)obj.GetValue(IsEnabledProperty);
}
public static void SetIsEnabled(DependencyObject obj, bool value)
{
obj.SetValue(IsEnabledProperty, value);
}
// Using a DependencyProperty as the backing store for IsEnabled. This enables animation, styling, binding, etc...
public static readonly DependencyProperty IsEnabledProperty =
DependencyProperty.RegisterAttached("IsEnabled", typeof(bool), typeof(GanttHelper), new PropertyMetadata(OnIsEnabledChanged));
private static void OnIsEnabledChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (e.NewValue != e.OldValue)
{
myGantt = d as RadGanttView;
myGantt.ExpandCollapseService.HierarchicalCollectionAdapter.CollectionChanged -= HierarchicalCollectionAdapter_CollectionChanged;
myGantt.ExpandCollapseService.HierarchicalCollectionAdapter.CollectionChanged += HierarchicalCollectionAdapter_CollectionChanged;
}
}
static void HierarchicalCollectionAdapter_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
(myGantt.DataContext as ViewModel).CustomCommand.Execute(e.NewItems);
}
}
Enable the helper the following way:
After the event is fire the CustomCommand from the ViewModel will be executed with the new items as a parameter.
Hope this helps.
Regards,
Kalin
Telerik
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