I'm trying to bind a DelegateCommand for a TreeView Expanded event. I understand that this isn't supported by default and that I will need to implement CommandBehaviorBase<T>. I tried to follow the ButtonBaseClickCommandBehavior example,
but couldn't figure it out. I think I'm getting confused because for a tree, you do something like:
<TreeView TreeViewItem.Expanded="TreeView_Expanded" />
And for a button you do something like:
<Button Click="Button_Click" />
Does having the Expanded event being under another element in the TreeView declaration make implementing the CommandBehaviorBase<T> significantly different than the ButtonBaseClickCommandBehavior? For my TreeView, it is binding to an ItemsSource
and then using a HierarchicalDataTemplate for each level in the tree.
Also, if this is possible, how can I pass the bound object in the expanded TreeViewItem with the Command?
Also, should I even be trying to use a DelegateCommand, or is there a better way to send events to the presenter?