KaxTreeView.NodeExpand Event

KaxTreeViewNodeExpand Event

Occurs when a node is expanded.

Namespace: Kettic.AspNet.Controls
Assembly: Kettic.AspNet.Controls (in Kettic.AspNet.Controls.dll) Version: 2014.4.1129.0 (2014.04.1129.0)

Syntax

C++

Copy

public event KaxTreeViewEventHandler NodeExpand

Public Event NodeExpand As KaxTreeViewEventHandler

public:
 event KaxTreeViewEventHandler^ NodeExpand {
	void add (KaxTreeViewEventHandler^ value);
	void remove (KaxTreeViewEventHandler^ value);
}

member NodeExpand : IEvent<KaxTreeViewEventHandler,
    KaxTreeNodeEventArgs>

Value

Type: Kettic.AspNet.ControlsKaxTreeViewEventHandler

Remarks

The NodeExpand event will be raised for nodes whose ExpandMode property is set to ServerSide or ServerSideCallback.

The NodeExpand event is commonly used to populate nodes on demand.

Examples

The following example demonstrates how to use the NodeExpand event to populate nodes on demand.

C++

Copy

protected void KaxTreeView1_NodeExpanded(object sender, Kettic.AspNet.Controls.KaxTreeNodeEventArgs e)
{
    KaxTreeNode nodeCreatedOnDemand = new KaxTreeNode("Node created on demand");
    e.Node.Nodes.Add(nodeCreatedOnDemand);
}

Sub KaxTreeView1_NodeExpanded(ByVal sender As Object, ByVal e As Kettic.AspNet.Controls.KaxTreeNodeEventArgs) Handles KaxTreeView1.NodeExpanded
    Dim nodeCreatedOnDemand As KaxTreeNode = New KaxTreeNode("Node created on demand")
    e.Node.Nodes.Add(nodeCreatedOnDemand)
End Sub

Reference

KaxTreeView Class

Kettic.AspNet.Controls Namespace