Session.LockingOption Property

Gets or sets a value which controls the persistent object’s locking during a session.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v24.1.dll

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

NuGet Package: DevExpress.Xpo

Declaration

C#

[DefaultValue(LockingOption.Optimistic)]
public LockingOption LockingOption { get; set; }

VB.NET

<DefaultValue(LockingOption.Optimistic)>
Public Property LockingOption As LockingOption

Property Value

Type	Default	Description
LockingOption	Optimistic	A LockingOption enumeration value which controls the persistent object’s locking during a session.

Available values:

Name	Description
None	A session doesn’t lock objects.
Optimistic	A session locks objects using optimistic locking.

Remarks

To ensure proper execution in multi-session applications, a persistent object’s state along with its recent data is protected using LockingOption.Optimistic locking. An object is unavailable to other sessions while its data is being updated. Attempting to update an object that has already been changed results in a concurrency violation. With a “last in wins” rule (see LockingOption.None option), no check of the original data is made and the persistent object is simply overwritten by update.