# Properties | **Properties** | **Description** | | ------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------- | | **EnableKineticScrolling** | Gets or sets a value indicating whether the kinetic scrolling function is enabled. | | **LazyMode** | Gets or sets a value indicating whether the TreeView load child Nodes collection in NodesNeeded event only when Parent nodes expanded. | | **DropHintColor** | Gets or sets the color of the drop hint. | | **ShowDropHint** | Gets or sets a value indicating whether the drop hint should be visible. | | **ShowDragHint** | Gets or sets a value indicating whether the drag hint should be visible. | | **RelationBindings** | Contains data binding settings for related data. | | **ExpandAnimation** | Gets or sets the type of expand animation. | | **PlusMinusAnimationStep** | Gets or sets the animation step for expand/collapse animation. | | **AllowPlusMinusAnimation** | Gets or sets a value indicating whether animation of collapse/expand images is enabled. | | **ImageIndex** | The default image index for nodes. | | **ImageKey** | The default image key for nodes. | | **TriStateMode** | Gets or sets a value indicating whether the check boxes will have three states. | | **ToggleMode** | Gets or sets the toggle mode. | | **DragDropService** | Gets or sets the drag drop service used when dragging nodes within RadTreeView or between different instances of RadTreeView. | | **LastNode** | Gets the last node. | | **AllowDragDrop** | Gets or sets a value indicating whether built in drag drop functionality is enabled. | | **MultiSelect** | Gets or set a value indicating whether the multi selection is enabled. | | **ShowExpandCollapse** | Gets or sets a value indicating whether the expander is visible. | | **SelectedNodes** | Gets the selected nodes. | | **CheckedNodes** | Gets the checked nodes. | | **CheckBoxes** | Gets or sets a value indicating whether the check boxes are visible. | | **HideSelection** | Gets or sets a value indicating whether the selection is enabled. | | **HotTracking** | Gets or sets a value indicating whether hot tracking is enabled. | | **ItemHeight** | Gets or sets the height of the item. | | **ActiveEditor** | Gets the active editor. | | **AllowEdit** | Gets or sets a value indicating whether editing nodes is allowed. | | **EditMode** | Gets or sets the default RadTreeNode edit mode. | | **AllowAdd** | Gets or sets a value indicating whether one ca add nodes form the context menu. | | **AllowRemove** | Gets or sets a value indicating whether one ca add nodes form the context menu. | | **SelectedNode** | Gets or sets the selected node. | | **ShowLines** | Gets or sets a value indicating whether the lines that connect the nodes are visible. | | **ShowRootLines** | Gets or sets a value indicating whether the root lines are visible. | | **TopNode** | Gets the first visible tree node in the tree view. | | **LineColor** | Gets or sets the color of the lines connecting the nodes in the tree view. | | **LineStyle** | Gets or sets the line style. | | **LineWidth** | Gets or sets a value determining the width of the link lines. | | **VisibleCount** | Gets the number of tree nodes that are visible in the tree view. | | **Nodes** | Gets the nodes collection. | | **TreeIndent** | Gets or sets the indent of nodes, applied to each tree level | | **Filter** | Gets or sets the filter string. | | **SortOrder** | Gets or sets the sort order of Nodes. | | **ExpandImage** | Gets or sets the expand image. | | **CollapseImage** | Gets or sets the expand image. | | **AllowArbitraryItemHeight** | Gets or sets a value indicating whether nodes can have different height. | | **FullRowSelect** | Gets or sets a value indicating whether to select the full row. | | **NodeSpacing** | Gets or sets the vertical spacing among nodes. | | **AlternatingRowColor** | Gets or sets the alternating row color. | | **AllowAlternatingRowColor** | Gets or sets a value indicating whether to show rows with alternating row colors. | | **FirstVisibleIndex** | Gets the index of the first visible node. | | **KeyboardSearchEnabled** | Gets or sets a value that determines whether the user can navigate to an item by typing when RadTreeViewElement is focused. | | **KeyboardSearchResetInterval** | Gets or sets a value that specifies how long the user must wait before searching with the keyboard is reset. | # Methods | Method | Description | | ----------------------------------- | --------------------------------------------------------------------------------------------------------------------------------- | | **GetNodeByName** | Gets a node with the specified name. | | **BeginEdit** | Puts the current node in edit mode. | | **EndEdit** | Commits any changes and ends the edit operation on the current node. | | **CancelEdit** | Close the currently active editor and discard changes. | | **CollapseAll** | Collapses all nodes. | | **ExpandAll** | Expands all nodes. | | **GetNodes** | Gets an enumerator which enumerates all nodes in the tree. | | **Find(string Text)** | Find a node with specified text. | | **EnsureVisible(RadTreeNode node)** | Ensures that the specified tree node is visible within the tree view element, scrolling the contents of the element if necessary. | | **ClearSelection** | Clears the selected nodes. | | **SelectAll** | Selects all nodes. | # Events | Event | Description | | ------------------------ | --------------------------------------------------------------------------- | | **SelectedNodeChanging** | Occurs before a tree node is selected. | | **SelectedNodeChanged** | Occurs after the tree node is selected. | | **SelectedNodesChanged** | Occurs when SelectedNodes collection has been changed. | | **NodeMouseDown** | Occurs when the user presses a mouse button over a RadTreeNode. | | **NodeMouseUp** | Occurs when the user releases a mouse button over a RadTreeNode. | | **NodeMouseClick** | Occurs when a mouse button is clicked inside a node | | **NodeMouseDoubleClick** | Occurs when a mouse button is double clicked inside a TreeNodeElement. | | **NodeCheckedChanging** | Occurs when the value of the Checked property of a RadTreeNode is changing. | | **NodeCheckedChanged** | Occurs when the value of the Checked property of a RadTreeNode is changed. | | **NodeExpandedChanging** | Occurs before the value of the Expanded property of a tree node is changed. | | **NodeExpandedChanged** | Occurs after the value of the Expanded property of a tree node is changed. | | **ContextMenuOpening** | Occurs when opening the context menu. | | **NodeRemoved** | Occurs after a node is removed. | | **NodeRemoving** | Occurs before a node is removed. | | **NodeAdded** | Occurs after a node is being added. | | **NodeAdding** | Occurs before a node is being added. | | **NodeFormatting** | Occurs when the node changes its state and needs to be formatted. | ## See Also * [Properties](https://docs.telerik.com/devtools/winforms/api/telerik.wincontrols.ui.radtreeview.html#properties) * [Methods](https://docs.telerik.com/devtools/winforms/api/telerik.wincontrols.ui.radtreeview.html#methods) * [Events](https://docs.telerik.com/devtools/winforms/api/telerik.wincontrols.ui.radtreeview.html#events)