Wpf treeview binding not updating
Observable Collection only provided notifications when we make any change in the collection itself like Adding or Removing an Item.
If we update any properties of a contained class, it doesn’t raise any notifications. If I have an Observable Collection of Person object and it is bind to a 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.
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).
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.
Set the Item Template property in your Hierarchical Data Template to the key name of the Data Template.
Set the Items Source property to the collection of objects that contain the path of the data expressed in the Data Template.
To start, let’s look at the typical two-level WPF Tree View that has been hard-coded with the values shown in the following code snippet.
In this case, the Items Source uses the Employees property as the collection of Employee objects.
Each Employee object has a Name property that’s used in the Data Template to display the name of the employee in the Tree View.
The employee name is indeed what shows up in the last level of the Tree View shown in Figure 1.
As this is just a two-level Tree View, you only need a single resource.