ValidateNodeEventArgs Class

Provides data for the TreeList.ValidateNode event.

Namespace: DevExpress.XtraTreeList

Assembly: DevExpress.XtraTreeList.v24.1.dll

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

Declaration

C#

public class ValidateNodeEventArgs :
    NodeEventArgs

VB.NET

Public Class ValidateNodeEventArgs
    Inherits NodeEventArgs

Related API Members

ValidateNodeEventArgs is the data class for the following events:

• TreeList.ValidateNode

Remarks

The TreeList.ValidateNode event fires when attempting to move node focus. It enables you to specify whether the currently focused node’s data is valid, and so whether moving focus is permitted.

To determine whether the currently focused node’s data is valid, you will need to access the node’s cell values. Thus, the ValidateNodeEventArgs class enables you to identify the processed node using the inherited NodeEventArgs.Node property. This class introduces the ValidateNodeEventArgs.Valid and ValidateNodeEventArgs.ErrorText properties that specify if a node’s data is valid and define the text displayed within an error message box.

Inheritance

Object

EventArgs

NodeEventArgs

ValidateNodeEventArgs