ASP.NET Tree. ExpertTree - XML and CSS based DHTML Server-Side Tree Control for ASP.NET

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Set CheckBoxes="true" at the tree level if you want that ExpertTree shows check boxes next to all nodes. You can assign check boxes for individual nodes with the node's IsCheckable boolean property.
Use AutoCheckChildren and AutoUnCheckChildren properties for the tree to control whether child nodes should be checked / unchecked if their parent node is checked / unchecked.
Use CheckedNodes property of the ExpertTree to get the ArrayList of the checked nodes.
Use SpaceBar key to check / uncheck the node while navigating across the tree with keyboard.
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