The problem with the IsMouseOver property on TreeViewItem in WPF is that when it is set to true for a child node it is also true for parent nodes. Therefore if you try to add a trigger with IsMouseOver property you will observe the following behavior:
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It is possible to set the selected item of a TreeView control in WPF without direct interaction with UI elements by including IsSelected property in your data object and binding it to IsSelected property of TreeViewItem. The code snippets below indicate
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