Here in this case we need to call the Refresh method of Collection View Source. The UI might also be slow to react when a user scrolls the Tree View by using the mouse wheel or dragging the thumb of a scrollbar.With the two changes described above, we now have an example that WILL reflect changes in the data source.It looks like this: As you can see, implementing INotify Property Changed is pretty easy, but it does create a bit of extra code on your classes, and adds a bit of extra logic to your properties.This will make the Add and Delete button work, but it won't do anything for the "Change name" button, because the change will happen on the bound data object itself and not the source list - the second step will handle that scenario though.The second step is to let our custom User class implement the INotify Property Changed interface.The problem, as my co-author and the-keeper-of-all-WPF-knowledge Ian Griffiths reminded me this morning, is that currency is based on a single collection, whereas a Tree View control is based on multiple collections, i.e. So, as I change the selection on the top node, the treeview has no single collection’s current item to update (stored in an associatedcurrent node” and explicitly bind each control to the treeview’s Selected Item property.
app to explore a hierarchical space (OData, if you must know), so of course, I was using the Tree View.If I add or remove person object from the Observable Collection I will be able to see the changes in my Tree View also.Here Person object has only one string property Full Name Now if I click on Change Name button, which simply renames the selected Person, I will not be able to see the change in my Tree View. 339&parid=root Have a look at this solution as well View Source_without_Refresh_for_Faster_Filtering_in_Silverlight Hope it helps.What we need is a list that notifies any destinations of changes to its content, and fortunately, WPF provides a type of list that will do just that.It's called Observable Collection, and you use it much like a regular List - that's all it takes!And since I’m a big fan of data binding, of course I’ve got a hierarchical data source (basically):current” item as it’s changed by the list control.If this was a listview instead of a treeview, that would work great (so long as you set the Is Synchronized With Current Item property to true).Simple Binding (flat structure): As seen, a simple root-level binding is achieved by using a standard … Do note that you need to inform the Hierarchical Data Template of the datatype to display.This is done using the Data Type attribute on the Hierarchical Data Template XAML-element.The Items Source of the list is assigned to a quick list of a couple of users that we create in the window constructor.The problem is that none of the buttons seems to work. The first step is to get the UI to respond to changes in the list source (Items Source), like when we add or delete a user.