.NET Framework 4.5.2+
.NET Framework 4.5.2+
.NET Standard 2.0+

Session.FindObject(Type, CriteriaOperator) Method

Searches for the first object which matches the specified criteria.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v21.1.dll


public object FindObject(
    Type classType,
    CriteriaOperator criteria


Name Type Description
classType Type

A Type object which represents the type of objects to search for.

criteria CriteriaOperator

A CriteriaOperator descendant which represents the criteria to match persistent objects to.


Type Description

An object which represents the first persistent object that matches the specified criteria. null (Nothing in Visual Basic) if no persistent object which matches the criteria is found.


The example below demonstrates how to use this method. Here, session is the Session instance.

using DevExpress.Data.Filtering;
using DevExpress.Xpo;
// ...
Person personToUpdate = (Person)session.FindObject(typeof(Person), 
    CriteriaOperator.Parse("Name='Michael Suyama'"));
if(personToUpdate != null) {
    personToUpdate.Birthday = new DateTime(1986, 10, 31);

Persistent objects that are marked as deleted in the database (see Deferred and Immediate Object Deletion) are not included in the search.

See Also