ASP.NET TreeView
Fastest on market
Legendary reliable with unbeatable features

Cool features and styles

Premiere blue style
A blue-gray style

Classic style
Classic treeview style

Classic style without icons
Classic style without icons

Win2003 style
Windows 2003 explorer style

Right to left style
Treeview from right to left

Help style
Help file style

D'n'D with various options
Drag and drop with various options

Expand/collapse nodes by level
Expand/collapse the levels of the TreeView

Search nodes
Search for a specific text in the tree

Image viewer
Image viewer using additional data for nodes
Sort nodes after drag and drop
Nodes get sorted as they are dropped on another node

Dynamic loading with virtual scrolling
Virtual scrollbar set on a dynamically loaded tree

Multi-level slide menu
Implementing multi-level slide menu with TreeView

EasyMenu and dynamic loading subtree
Attching context menu in dynamically loaded tree nodes

Validate drag-and-drop on server-side
Validate the nodes when dropped on server-side

Moving nodes between two trees
Keep the state of the tree across different pages

File system manager
Add / rename / delete files/folders with the file system manager

Remove all children
Remove all children without using the ob_t2_Remove function

Keyboard navigation
Navigating through treeview using keyboard

Integration with MS AJAX
Loading the additional data for the nodes with MS AJAX

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Geryon DZZD

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Examples 
Styles
Classic
Classic
Dynamic Loading
No Icons
Black
Black No Icons
Background image
Premiere New
black
blue
green
red
violet
yellow
Explorer
Gray
Help
HelpPlus
MSDN
TMenu
TMenu (small icons)
Vista New
Web
White
XPBlue
Win2003
Right To Left
Features
Drag and drop - 18
Drag-n-Drop
Custom
Multi-node
Dragging with children
Drop in textboxes
External D'n'D
Move nodes 1
Renumber nodes
Auto Scrolling
Copy / Move nodes
D'n'd and Dynamic Loading
Drop in listboxes
Drop in listboxes 2
Restrict Levels
D'n'D with various options
Disable dropping in two trees
Not-allowed Icon New
Sort after D'n'D New
Dynamic loading - 6
Web style
MSDN style
Deep tree
Reload subtrees
Loading trees partially
Virtual Scrolling New
Add/remove nodes - 4
Add/remove on client-side
Alphabetical order
Add to dynamic subtrees
Remove all children
Edit nodes - 4
Edit nodes
Nodes with Checkboxes
Sort after Edit New
Select nodes - 3
Find selected node
Select multiple nodes
Highlight parent
Layout - 2
Width, height and scrollbars
Root node
TreeView state - 3
Dynamic
Keep expanded
Keep collapsed
File system - 3
Show file system
File system loading
File system manager
Additional data for each node - 3
Details
On client side
Image viewer
Expand/collapse nodes - 2
By level
Single folder
Multiple trees - 4
Two Trees
Two Trees custom
Two Trees enhancement
Move Nodes BTWN Trees New
Different Styles New
Validation - 2
D-n-d on server
Edit on server
Integration - 14
With a context menu
Attach Easy Menu
Attach menu on-demand
Attach to dynamic nodes
Attach menu to icons
Change icons
With Flyout
With Splitter
MS AJAX
With checkboxes
Dynamic checkboxes
With a Combobox
With modal dialog
Outlook Slide Menu
With Tab Strip
Build from SiteMap
Customization - 7
Icons for treeview
Aligned columns
CSS Tutorial
Hover node effect
Multi-Level Slide Menu
Select on Collapse
From Dennis
From/To XML file
Keyboard navigation
Search nodes
Client-side events
Knowledge Base - 1
Knowledge Base
Documentation
Method Add
Server-Side
Client-Side
Client-Side Events
XML
Methods
XML Tutorial
Client-Side Tutorial
Tutorial 1
Tutorial 2
Tutorial 3
Tutorial 4
Events
Tutorial
Event handlers
Tutorials
Using the correct path
Improving performance
In a user control
AutoPostBack with various options
Open in Search pane
Move nodes by clicking a button
Postback on node select
Switch icons