TreeList.TopVisibleNodeIndexChanged Event

Fires when the control’s content is scrolled vertically.

Namespace: DevExpress.XtraTreeList

Assembly: DevExpress.XtraTreeList.v23.2.dll

NuGet Packages: DevExpress.Win.Navigation, DevExpress.Win.TreeList

Declaration

C#

[DXCategory("Property Changed")]
public event EventHandler TopVisibleNodeIndexChanged

VB.NET

<DXCategory("Property Changed")>
Public Event TopVisibleNodeIndexChanged As EventHandler

Event Data

The TopVisibleNodeIndexChanged event's data class is EventArgs.

Remarks

Write a TopVisibleNodeIndexChanged event handler to perform specific actions each time vertical scrolling is performed. Use the TreeList.TopVisibleNodeIndex property to determine the index of the top visible node index.

Use the TreeList.LeftCoordChanged event to handle horizontal scrolling of the control’s content.