APNSoft Controls [4.5.2.20] - API Reference APNSoftTreeView.ClientSideOnCollapse Property
Gets or sets the client-side code to be launched when an item is collapsed. Property value can include variables $ComponentID$ and $ItemID$, instead of which data is inserted.
[Visual Basic] Public Property ClientSideOnCollapse As String
[C#] public string ClientSideOnCollapse {get; set;}