UnitOfWork.CommitChanges() Method

Commits all the changes made to persistent objects to a data store.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v23.2.dll

NuGet Packages: DevExpress.Win.PivotGrid, DevExpress.Win.TreeMap, DevExpress.Xpo

NuGet Package: DevExpress.Xpo

Declaration

C#

public void CommitChanges()

VB.NET

Public Sub CommitChanges

Remarks

A Unit of Work tracks every change to every persistent object during a transaction that can affect a data store. Its CommitChanges method commits all the changes made to persistent objects to a data store. The only requirement for this is that the property setters call the XPBaseObject.OnChanged method.

Calling the CommitChanges method automatically calls Session.CommitTransaction (in explicit units of work, ExplicitUnitOfWork.CommitTransaction is called).

Note

If a save operation fails (for example, due to a database constraint violation), the following exceptions can be raised by XPO:

• LockingException
• SchemaCorrectionNeededException
• SqlExecutionErrorException
• ConstraintViolationException

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the CommitChanges() method.

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.

C#

wpf-data-grid-implement-crud-operations/CS/CodeBehind/XPO/LocalData/MainWindow.xaml.cs#L20

void OnValidateRow(System.Object sender, DevExpress.Xpf.Grid.GridRowValidationEventArgs e) {
    _UnitOfWork.CommitChanges();
}

CriteriaOperatorsCheatSheet/CS/CriteriaOperatorCheatSheet/Tests/BaseTest.cs#L16

    ConnectionHelper.AddOrder(uow, "FirstName1", 20);
    uow.CommitChanges();
}

XPO_how-to-implement-odata4-service-with-xpo/CS/ODataService/Helpers/ApiHelper.cs#L19

    delta.CopyChangedValues(existing);
    uow.CommitChanges();
}

how-to-bind-wpf-grid-to-data/CS/CodeBehind/XPO/InfiniteAsyncSource/Issues/DemoDataHelper.cs#L19

    .ToArray();
uow.CommitChanges();
var rnd = new Random(0);

XPO_how-to-generate-a-sequential-number-for-a-business-object-within-a-database-transaction-e2620/CS/ExplicitUnitOfWorkDemo/SequenceGenerator.cs#L18

public void Accept(){
    euow.CommitChanges();
}

VB.NET

wpf-data-grid-implement-crud-operations/VB/CodeBehind/XPO/LocalData/Issues/DemoDataHelper.vb#L16

                                                End Function).ToArray()
uow.CommitChanges()
Dim rnd = New Random(0)

XPO_how-to-generate-a-sequential-number-for-a-business-object-within-a-database-transaction-e2620/VB/ExplicitUnitOfWorkDemo/SequenceGenerator.vb#L20

Public Sub Accept()
    euow.CommitChanges()
End Sub

reporting-mvc-db-storage/VB/DXWebApplication_ReportDesigner/Controllers/DesignerController.vb#L33

    session.CommitChanges()
End Using

xpo-how-to-implement-self-referenced-persistent-objects-and-display-them-within-the-xtra-tree-list/VB/CS/Form1.vb#L57

    AnneDodsworth.Manager = StevenBuchanan
    uow.CommitChanges()
End Using

XPO_how-to-persist-metadata-e269/VB/Program.vb#L76

    uof.CommitChanges()
End Using