Session.FindObject<ClassType>(CriteriaOperator, Boolean) Method
Searches for the first object of the type designated by the specified generic type parameter which matches the specified criteria.
Namespace: DevExpress.Xpo
Assembly: DevExpress.Xpo.v18.2.dll
Declaration
Parameters
Name | Type | Description |
---|---|---|
criteria | CriteriaOperator | A CriteriaOperator descendant which represents the criteria to match persistent objects. |
selectDeleted | Boolean | true to include persistent objects marked as deleted into the search; otherwise, false. |
Type Parameters
Name |
---|
ClassType |
Returns
Type | Description |
---|---|
ClassType | An object which represents the first persistent object matching the specified criteria. null (Nothing in Visual Basic) if no persistent object matching the criteria is found. |
Remarks
Criteria are evaluated on the data store side. Objects created within a transaction (Cache), are not processed by the criteria. Objects modified within a transaction, are not processed. Instead, their images, stored in the data store, are processed by the criteria.
To specify how filter criteria are evaluated within a transaction, use the overloaded FindObject method that takes the PersistentCriteriaEvaluationBehavior value as a parameter.
Persistent objects that are marked as deleted in the database (see Deferred and Immediate Object Deletion) are can be optionally included in the search using the selectDeleted parameter.