RadTreeView provides API for handling server-side (postback) events:

• NodeClick
• NodeDrop
• NodeCheck
• NodeBound
• NodeEdit
• NodeExpand
• NodeContextClick

This example shows a sample approach using  the NodeClick, NodeDrop, NodeEdit, NodeExpand and NodeContextClick events. Information about the rest of the server-side events supported by RadTreeView can be found in the help docs � �RadTreeView Server-side section�.

The events shown in this example are fired as follows:

• NodeClick � the AutoPostBack property of the RadTreeView class should be enabled. When you click a node, its child-nodes structure is shown in the grid next to the treeview.
• NodeDrop � fired upon dropping a node onto another node. To enable drag-and-drop mode you need to mark the instance of RadTreeView with the DragAndDrop="True" attribute and you will be able to drag and drop tree-nodes.
• NodeEdit � you can simply select a node and press F2 (or click an already selected node) and you'll be able to edit the node text client-side. In order to do that, you need to set the AllowNodeEditing property of RadTreeView to true.
• NodeExpand - fired when users click on the "+" icon. To fire the event you should set the ExpandMode of each tree-node
• NodeContextClick �fired when the end-users click on a ContextMenuItem of a tree-node. Thee ContextMenuItem has to be marked with the PostBack ="True".