TreeView Class

Defines a control which displays a hierarchical list which may contain text, checkboxes, images, or arbitrary HTML content.

Inheritance

object

Component

Control

TreeView

Implements

IHtmlContent

ITemplate

Namespace: C1.Web.Mvc

Assembly: C1.AspNetCore.Mvc.dll

Syntax

public class TreeView : Control, IHtmlContent, ITemplate

Public Class TreeView
    Inherits Control
    Implements IHtmlContent, ITemplate

Constructors

Name	Description
TreeView(IHtmlHelper, string)	Creates one TreeView instance.

Properties

Name	Description
AllowDragging	Gets or sets a value that determines whether users can drag and drop nodes within the TreeView control.
AutoCollapse	Gets or sets a value that determines if sibling nodes should be collapsed when a node is expanded.
CheckOnClick	Gets or sets a value that determines whether to toggle checkboxes when the user clicks the node header.
CheckedMemberPath	Gets or sets the name of the property (or properties) to bind to the node's checked state.
ChildItemsPath	Gets or sets the name of the property (or properties) that contains the child items for each node. When it is not set, ['items'] will be used.
CollapseOnClick	Gets or sets a value that determines whether to collapse expanded nodes when the user clicks the node header.
CollapseWhenDisabled	Gets or sets a value that determines whether nodes should be collapsed when they are disabled.
DisplayMemberPath	Gets or sets the name of the property (or properties) to use as the visual representation of the nodes. When it is not set, ['header'] will be used.
ExpandOnClick	Gets or sets a value that determines whether to expand collapsed nodes when the user clicks the node header.
ExpandOnLoad	Gets or sets a value that determines whether to toggle checkboxes when the user clicks the node header.
ImageMemberPath	Gets or sets the name of the property (or properties) to use as a source of images for the nodes.
IsAnimated	Gets or sets a value that indicates whether to use animations when expanding or collapsing nodes.
IsContentHtml	Gets or sets a value indicating whether items are bound to plain text or HTML.
IsReadOnly	Gets or sets a value that determines whether users can edit the text in the nodes. When it is set to false, users may edit the content of the tree nodes by typing directly into the nodes. The F2 key can also be used to enter edit mode with the whole node content selected.
LazyLoadActionUrl	Gets or sets the url to get the lazy nodes in TreeView.
LazyLoadFunction	Gets or sets a client function that loads child nodes on demand.
LoadActionUrl	Gets or sets the url to get the items in TreeView.
OnClientCheckedItemsChanged	Occurs when the checked items are changed.
OnClientDragEnd	Occurs when the user finishes a drag/drop operation, either by dropping a node into a new location or by canceling the operation with the mouse or keyboard.
OnClientDragOver	Occurs while the user drags a node over other nodes on the TreeView.
OnClientDragStart	Occurs when the user starts dragging a node. This event only occurs if the AllowDrag property is set to true.
OnClientDrop	Occurs when the user drops a on the TreeView.
OnClientFormatItem	Occurs when an element representing a node has been created.
OnClientIsCheckedChanged	Occurs after the check status of a node is changed.
OnClientIsCheckedChanging	Occurs before the check status of a node is changed.
OnClientIsCollapsedChanged	Occurs after a node is collapsed or expanded.
OnClientIsCollapsedChanging	Occurs before a node is collapsed or expanded.
OnClientItemClicked	Occurs when the user clicks an item or presses the Enter key and an item is selected.
OnClientItemsSourceChanged	Occurs when the value of the ItemsSource property changes.
OnClientLoadedItems	Occurs after the tree items have been generated.
OnClientLoadingItems	Occurs before the tree items are generated.
OnClientNodeEditEnded	Occurs after a node has exited edit mode.
OnClientNodeEditEnding	Occurs before a node exits edit mode.
OnClientNodeEditStarted	Occurs after a node has entered edit mode.
OnClientNodeEditStarting	Occurs before a node enters edit mode.
OnClientReponseTextParsing	Occurs when parsing the response text.
OnClientRequestDataStringifying	Occurs when serializing the request data.
OnClientSelectedItemChanged	Occurs when the selected item is changes.
ShowCheckboxes	Gets or sets a value that determines whether the TreeView control should add checkboxes to nodes and manage their state. This property can be used only on trees without lazy-loaded nodes(LazyLoadFunction is not set and IsLazyLoading is false).
Source	Gets or sets the array that contains the items in TreeView. Arrays usually have a hierarchical structure with items that contain child items. There is no fixed limit to the depth of the items.