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.v24.2.dll
NuGet Package: DevExpress.ExpressApp
Declaration
Remarks
Generally, the BeginUpdateCriteria/EndUpdateCriteria() methods should be used when you need to perform several modifications of the Collection Source’s collection CollectionSourceBase.Criteria. After you call 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.BeginUpdateCriteria();
collectionSource.Criteria["1"] = CriteriaOperator.Parse("...");
collectionSource.Criteria["2"] = CriteriaOperator.Parse("...");
collectionSource.EndUpdateCriteria();
//...