xpo-devexpress-dot-xpo-dot-session-0ffd5ed6.md
Gets or sets a value which controls the persistent object’s locking during a session.
Namespace : DevExpress.Xpo
Assembly : DevExpress.Xpo.v25.2.dll
NuGet Package : DevExpress.Xpo
[DefaultValue(LockingOption.Optimistic)]
public LockingOption LockingOption { get; set; }
<DefaultValue(LockingOption.Optimistic)>
Public Property LockingOption As LockingOption
| 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.
|
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.
See Also