TreeView.CheckedItems is contains is checked item.
But now checkeditems is contains all item..
1 Answer, 1 is accepted
Dinko | Tech Support Engineer
answered on 14 Sep 2016, 01:36 PM
The checkbox support of RadTreeView has many known issues and limitations. Instead of using the default checkboxes I strongly recommend you to implement custom functionality with a CheckBox element in the ItemTemplate of the treeview items. You can see such implementation in the Implement a Tri-State CheckBox logic using MVVM help article.
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