.NET Framework 4.5.2+
.NET Framework 4.5.2+
.NET Standard 2.0+
.NET Core 3.0+

CollectionSourceBase.BeginUpdateCriteria() Method

Begins update of the Collection Source’s collection criteria. The criteria will not be applied to the collection until the update is complete.

Namespace: DevExpress.ExpressApp

Assembly: DevExpress.ExpressApp.v21.1.dll


public void BeginUpdateCriteria()


Generally, the BeginUpdateCriteria/CollectionSourceBase.EndUpdateCriteria methods should be used when you need to perform several modifications of the Collection Source’s collection CollectionSourceBase.Criteria. After calling the BeginUpdateCriteria method, you can change the criteria as required. The criteria will not be applied to the Collection Source’s collection until you call the EndUpdateCriteria method. The following code snippet illustrates this:

collectionSource.Criteria["1"] = CriteriaOperator.Parse("...");
collectionSource.Criteria["2"] = CriteriaOperator.Parse("...");
See Also