Session.BeginTrackingChanges() Method

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v21.2.dll

Declaration

public void BeginTrackingChanges()

Public Sub BeginTrackingChanges

Remarks

Units of work (ExplicitUnitOfWork and UnitOfWork) automatically track changes made to persistent objects within their scope. In sessions, you need to call the BeginTrackingChanges method to enable tracking changes. To determine if changes are currently being tracked in a session, use the Session.TrackingChanges property.

Calling the BeginTrackingChanges method automatically starts a transaction (a database level transaction in an explicit unit of work) and raises the Session.BeforeBeginTrackingChanges and Session.AfterBeginTrackingChanges events, allowing you to monitor progress.

To manage changes made in a session or unit of work, use the Session.FlushChanges, Session.FlushChangesAsync, and Session.DropChanges methods.

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the BeginTrackingChanges() method.

{
    session1.BeginTrackingChanges();
    oldRowsCount = gridView1.DataRowCount;

Private Sub button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles simpleButton1.Click
    session1.BeginTrackingChanges()
    oldRowsCount = gridView1.DataRowCount