WinForms TreeView Getting Started

TreeViewAdv displays a collection of data in hierarchical tree structure and the data in tree view can be expanded and collapsed. It offers many features like drag-and-drop, load on demand, context menus and data binding. The control comes with complete design time support.

Customize Nodes

TreeViewAdv provides customization options to control the appearance and behavior of nodes with visual elements such as lines, expand/collapse buttons, checkboxes, and option buttons.

Root Lines

Display connecting lines between nodes using ShowRootLines and ShowLines properties. Both are set to true by default.

When TreeViewAdv.ShowLines is set to false, the connecting lines will not be displayed for the entire control.

// Hide connecting lines
this.treeViewAdv1.ShowLines = false;

Plus/Minus

We can display Plus/Minus sign for the parent nodes by setting the property TreeViewAdv.ShowPlusMinus to True. This will set Plus/Minus sign for all the parent nodes in TreeViewAdv. We can also set this for nodes using TreeNodeAdv.ShowPlusMinus property in the TreeNodeAdv.

The nodes in the TreeViewAdv, even when it is in the expanded state, can still display the Plus sign using the TreeNodeAdv.ShowPlusOnExpand property. TreeViewAdv.LoadOnDemand property should be set to true for this feature to be effective.

this.treeViewAdv1.ShowPlusMinus = false;

CheckBox

We can display CheckBox for all nodes in TreeViewAdv by setting TreeViewAdv.ShowCheckBoxes property to True. The CheckBox for individual nodes can also be shown or hidden using TreeNodeAdv.ShowCheckBox property in TreeNodeAdv.

this.treeViewAdv1.ShowCheckBoxes = false;
treeNode.ShowCheckBox = true;

OptionButton

The Option Buttons can be displayed for the nodes in the TreeViewAdv using the TreeViewAdv.ShowOptionButtons property. We can also show or hide the Option Button for individual nodes using TreeNodeAdv.ShowOptionButton property in the TreeNodeAdv.

this.treeViewAdv1.ShowOptionButtons = false;
treeNode.ShowOptionButton = true;

Assigning Active Nodes

The TreeViewAdv.ActiveNode property holds the currently selected node. By default, it is null when no node is selected.

Documentation

Take a moment to peruse the WinForms TreeView documentation, where you can find about TreeViewAdv with code examples.