XPCollectionChangedEventArgs Class

Provides data for the XPBaseCollection.CollectionChanged event.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v22.1.dll

Declaration

C#

public class XPCollectionChangedEventArgs :
    EventArgs

VB.NET

Public Class XPCollectionChangedEventArgs
    Inherits EventArgs

Related API Members

XPCollectionChangedEventArgs is the data class for the following events:

• XPBaseCollection.CollectionChanged

Remarks

The XPBaseCollection.CollectionChanged event is raised when the collection is changed (e.g. a new element has been added or removed). The XPCollectionChangedEventArgs class provides the XPCollectionChangedEventArgs.ChangedObject and XPCollectionChangedEventArgs.CollectionChangedType properties that identify the object which was changed and the action that specifies how the collection has been changed, respectively.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the XPCollectionChangedEventArgs 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#

XPO_how-to-implement-a-calculated-property-aggregating-collection-items-e1477/CS/DetailCollectionChanged/DataObjects.cs#L27

void col_CollectionChanged(object sender, XPCollectionChangedEventArgs e) {
    // call TotalsChanged if the grid is not the only control that modifies the Children collection

XAF_how-to-show-the-grandchildren-collection-in-the-detailview-e1448/CS/WinSample.Module/Master.cs#L49

}
void Details_CollectionChanged(object sender, XPCollectionChangedEventArgs e) {
    UpdateSubDetails();

VB.NET

XPO_how-to-implement-a-calculated-property-aggregating-collection-items-e1477/VB/DetailCollectionChanged/DataObjects.vb#L32

Private Sub col_CollectionChanged(ByVal sender As Object, ByVal e As XPCollectionChangedEventArgs)
    ' call TotalsChanged if the grid is not the only control that modifies the Children collection

XAF_how-to-show-the-grandchildren-collection-in-the-detailview-e1448/VB/WinSample.Module/Master.vb#L57

End Function
Private Sub Details_CollectionChanged(ByVal sender As Object, ByVal e As XPCollectionChangedEventArgs)
    UpdateSubDetails()

Inheritance

Object

EventArgs

XPCollectionChangedEventArgs