How to know selected items of treeview are changed. which items are newly checked or unchecked?

[Yang]

I have a hierarchical tree view. If I check or uncheck some items, how do I know selected items are changed and which are added, which are removed?

Thank you.

[Miroslav]

Hi Yang,

The (Preview)SelectionChanged event can be used to track the selection.

Then the Checked/Unchecked events will fire when the CheckState of the TreeViewItems changes.

The treeView.CheckedItems collection contains all checked items that the TreeView can keep track of.

An article about the TreeView events can be found here:

http://www.telerik.com/help/silverlight/radtreeview-events-overview.html

Sincerely yours,
Miroslav
the Telerik team