NodeEventHandler Delegate

Represents a method that will handle events that require a node as the parameter.

Namespace: DevExpress.XtraTreeList

Assembly: DevExpress.XtraTreeList.v18.1.dll

Declaration

C#

public delegate void NodeEventHandler(
    object sender,
    NodeEventArgs e
);

VB.NET

Public Delegate Sub NodeEventHandler(
    sender As Object,
    e As NodeEventArgs
)

Parameters

Name	Type	Description
sender	Object	The sender of an event.
e	NodeEventArgs	A NodeEventArgs object that contains event related data.

Remarks

When you create a NodeEventHandler delegate, you identify the method that will handle an event. To associate an event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the NodeEventHandler delegate.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-use-treelist-for-file-management-drag-and-drop-files-and-folders-e3400/CS/FileList/FileListHelper.cs#L29

Tree.BeforeExpand += new DevExpress.XtraTreeList.BeforeExpandEventHandler(this.treeList1_BeforeExpand);
Tree.AfterExpand += new DevExpress.XtraTreeList.NodeEventHandler(this.treeList1_AfterExpand);
Tree.AfterCollapse += new DevExpress.XtraTreeList.NodeEventHandler(this.treeList1_AfterCollapse);

how-to-implement-node-dynamic-loading-in-unbound-mode-t500394/CS/TreeList-UnboundMode-ViaBeforeExpandEvent/Form1.cs#L78

treeList1.AfterCollapse += new DevExpress.XtraTreeList.NodeEventHandler(this.treeList1_AfterCollapse);
treeList1.AfterExpand += new DevExpress.XtraTreeList.NodeEventHandler(this.treeList1_AfterExpand);