ObjectChangeEventArgs Class

Provides data for the XPBaseObject.Changed and Session.ObjectChanged events.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v22.1.dll

Declaration

C#

public class ObjectChangeEventArgs :
    EventArgs

VB.NET

Public Class ObjectChangeEventArgs
    Inherits EventArgs

Related API Members

ObjectChangeEventArgs is the data class for the following events:

• Session.ObjectChanged
• XPBaseObject.Changed

Remarks

The XPBaseObject.Changed and Session.ObjectChanged events fire after the XPBaseObject.OnChanged method has been called. The ObjectChangeEventArgs class provides the ObjectChangeEventArgs.PropertyName and ObjectChangeEventArgs.Reason properties that identify the name of the property whose value has been changed and the way in which the object has been changed, respectively. The property’s old and new values are specified by the ObjectChangeEventArgs.OldValue and ObjectChangeEventArgs.NewValue properties, respectively.

Related GitHub Examples

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

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#

Reporting_embedded-end-user-report-designer-demonstration-e20017/CS/Contacts/Controls/PersonControl.cs#L167

#region Events
private void person_Changed(object sender, ObjectChangeEventArgs e)
{

XPO_how-to-bind-data-to-winforms-controls-using-xpbindingsource/CS/DXApplication/Entities.cs#L12

public BaseObject(Session session) : base(session) { }
protected override void TriggerObjectChanged(ObjectChangeEventArgs args) {
    XPBaseObject.RaiseChangedEvent(this, args);

VB.NET

Reporting_embedded-end-user-report-designer-demonstration-e20017/VB/Contacts/Controls/PersonControl.vb#L182

#Region "Events"
Private Sub person_Changed(ByVal sender As Object, ByVal e As ObjectChangeEventArgs)
    If e.PropertyName IsNot Nothing Then

XPO_how-to-bind-data-to-winforms-controls-using-xpbindingsource/VB/DXApplication/Entities.vb#L14

End Sub
Protected Overrides Sub TriggerObjectChanged(ByVal args As ObjectChangeEventArgs)
    XPBaseObject.RaiseChangedEvent(Me, args)

Inheritance

Object

EventArgs

ObjectChangeEventArgs