expressappframework-devexpress-dot-expressapp-dot-listview-e74461e7.md
Provides access to a ListView‘s Collection Source.
Namespace : DevExpress.ExpressApp
Assembly : DevExpress.ExpressApp.v25.2.dll
NuGet Package : DevExpress.ExpressApp
public CollectionSourceBase CollectionSource { get; }
Public ReadOnly Property CollectionSource As CollectionSourceBase
| Type | Description |
|---|---|
| CollectionSourceBase |
A CollectionSourceBase object representing the current List View’s collection source.
|
A Collection Source is used to retrieve a collection of objects of the specified type, from an object space that will be used by a List View. The CollectionSource property allows you to use the members of the current List View’s Collection Source.
To learn about Collection Sources, refer to the CollectionSourceBase class description.
An example is available in the Criteria Property of a List View's Collection Source article.
The following code snippets (auto-collected from DevExpress Examples) contain references to the CollectionSource property.
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.
base.OnActivated();
if(View.CollectionSource is PropertyCollectionSource && ((PropertyCollectionSource)View.CollectionSource).MasterObjectType == typeof(ViewFilterContainer)) {
NewObjectViewController newObjectViewController = Frame.GetController<NewObjectViewController>();
ListView lv = (ListView)View;
PropertyCollectionSource pcs = lv.CollectionSource as PropertyCollectionSource;
if (pcs != null) {
base.OnActivated();
var pcs = View.CollectionSource as PropertyCollectionSource;
var linkUnlinkController = Frame.GetController<LinkUnlinkController>();
private void FilteringCriterionAction_Execute(object sender, SingleChoiceActionExecuteEventArgs e) {
var collectionSource = View.CollectionSource;
collectionSource.BeginUpdateCriteria();
((ColumnWrapper)e.Item).PropertyName, null,
((ListView)View).CollectionSource, View.ObjectSpace)) {
e.AppearanceObject.Visibility = ViewItemVisibility.Hide;
If Not DataManipulationRight.CanRead(View.ObjectTypeInfo.Type, (CType(e.Item, ColumnWrapper)).PropertyName, Nothing, (CType(View, ListView)).CollectionSource, View.ObjectSpace) Then
e.AppearanceObject.Visibility = ViewItemVisibility.Hide
See Also