C1TreeView supports showing tree nodes with tri-state check boxes.

In order to show tree nodes with check box, the following properties are used in this sample.

• ShowCheckBoxes - set to True to show check boxes.
• AutoCheckNodes - for specifying whether the sub-nodes will be checked according to its parent's check state.
• AllowTriState - for specifying whether the node can be in indeterminate state.

Tri-state check boxes have 3 states "Checked", "Unchecked" and "Indeterminate". The "Indeterminate" state indicates that the node has both checked and unchecked child nodes.