xpo-devexpress-dot-xpo-dot-xpbasecollection-89600bec.md
Gets or sets the criteria used to filter objects on the data store side.
Namespace : DevExpress.Xpo
Assembly : DevExpress.Xpo.v25.2.dll
NuGet Package : DevExpress.Xpo
public CriteriaOperator Criteria { get; set; }
Public Property Criteria As CriteriaOperator
| Type | Description |
|---|---|
| CriteriaOperator |
A CriteriaOperator object that specifies the criteria to filter objects on the data store side.
|
Use the Criteria property in order to change the criteria by which the persistent objects will be filtered during collection loading on the storage side. If you change this property’s value, the collection is refreshed immediately. But if you change any of its criteria members, you must call the XPBaseCollection.Reload method in order to force loading. To temporarily prevent a collection from loading/reloading data use the XPBaseCollection.LoadingEnabled property.
For examples and additional information about filter expressions, see these help topics:
Note
Unlike the XPCollection’s XPBaseCollection.Filter, Criteria can be built on persistent properties only.
The following code snippets (auto-collected from DevExpress Examples) contain references to the Criteria 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.
xaf-filter-lookup-list-views/CS/XPO/FilterLookup/FilterLookup.Module/BusinessObjects/Order.cs#L62
// Show only Global Accessories when the Product is not specified
availableAccessories.Criteria = CriteriaOperator.Parse("[IsGlobal] = true");
}
winforms-filtercontrol-implement-ifilteredcomponent/CS/Q200298/Helper.cs#L176
if (source == null) return null;
return source.Criteria;
}
XAF-search-objects-using-complex-criterion/CS/Dennis.Search.Win/SearchObjectBase.cs#L100
criteriaCore = null;
searchResultsCore.Criteria = EmptyCollectionCriteria;
}
XPO_how-to-filter-a-collection-by-an-associated-objects-properties-e886/CS/Form1.cs#L302
void SetFilter(CriteriaOperator criteria) {
xpCollection1.Criteria = criteria;
asp-net-mvc-grid-custom-binding-and-xpo/CS/XPCustomBindingExample/XPO/XpoBindingHandlers.cs#L31
XPCollection data = new XPCollection(Session, ClassInfo);
data.Criteria = CriteriaOperator.Parse(e.FilterExpression) & GetGroupFilter(e.GroupInfoList);
data.Sorting = GetSorting(e.State.SortedColumns, e.StartDataRowIndex != 0 || e.DataRowCount != 0);
winforms-filtercontrol-implement-ifilteredcomponent/VB/Q200298/Helper.vb#L219
If sourceField Is Nothing Then Return Nothing
Return sourceField.Criteria
End Get
XAF-search-objects-using-complex-criterion/VB/Dennis.Search.Win/SearchObjectBase.vb#L155
criteriaCore = Nothing
searchResultsCore.Criteria = EmptyCollectionCriteria
End Sub
XPO_how-to-filter-a-collection-by-an-associated-objects-properties-e886/VB/Form1.vb#L292
Private Sub SetFilter(ByVal criteria As CriteriaOperator)
xpCollection1.Criteria = criteria
asp-net-mvc-grid-custom-binding-and-xpo/VB/XPCustomBindingExample/XPO/XpoBindingHandlers.vb#L31
Dim data As New XPCollection(Session, ClassInfo)
data.Criteria = CriteriaOperator.Parse(e.FilterExpression) And GetGroupFilter(e.GroupInfoList)
data.Sorting = GetSorting(e.State.SortedColumns, e.StartDataRowIndex <> 0 OrElse e.DataRowCount <> 0)
See Also