Controls / TreeView / CheckBoxes / Tri State
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The RadTreeNode class exposes the read-only CheckState property of type TreeNodeCheckState which represents the current state of the Node's CheckBox.
TreeNodeCheckState is an enumeration and has the following possible values:
Checked
Indeterminate
Unchecked
If a Node's CheckBox is clicked the server-side NodeCheck event fires only for the clicked Node regardless of the CheckChildNodes property of RadTreeView.
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