ASPxTreeView.CheckedChanged Event

Fires after the node’s checked state has been changed by clicking on a check box.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v24.1.dll

NuGet Package: DevExpress.Web

Declaration

C#

public event TreeViewNodeEventHandler CheckedChanged

VB.NET

Public Event CheckedChanged As TreeViewNodeEventHandler

Event Data

The CheckedChanged event's data class is TreeViewNodeEventArgs. The following properties provide information specific to this event:

Property	Description
Node	Gets a node object related to the event.

Remarks

Write a handler for the CheckedChanged event to perform any custom actions in response to the node’s checked state being changed.

Note

The CheckedChanged event fires after a user has changed the checked state by clicking on a check box. If you change the checked state programmatically or it changes automatically (when the ASPxTreeView.CheckNodesRecursive property is set to true) the event is not invoked.

Example

The code below demonstrates how you can handle the CheckedChanged event, to change the text style of nodes which are checked (their text is displayed bold).

The image below shows the result.

C#

    protected void ASPxTreeView1_CheckedChanged(object source, DevExpress.Web.TreeViewNodeEventArgs e) {
            e.Node.TextStyle.Font.Bold = e.Node.Checked;
    }