XPObject Class

Implements the IXPObject and provides an autogenerated integer key mapped to the ‘OID’ field.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v18.1.dll

Declaration

C#

[NonPersistent]
[MemberDesignTimeVisibility(false)]
public abstract class XPObject :
    XPCustomObject

VB.NET

<NonPersistent>
<MemberDesignTimeVisibility(False)>
Public MustInherit Class XPObject
    Inherits XPCustomObject

Remarks

When creating a persistent object by deriving from the XPBaseObject, XPCustomObject or XPObject class, an OptimisticLockingAttribute is automatically applied to it. This attribute specifies whether a session can lock a persistent object’s state (allows optimistic locking to be enabled).

For more information, see XPObject and Optimistic Concurrency.

Note

XPO classes can’t be used as design-time Data Sources in VS 2005 since the base XPBaseObject class implements the System.ComponentModel.ICustomTypeDescriptor interface to provide dynamic type information. You should use, for example, the XPCollection or XPView as a data source for editors and grids.

Related GitHub Examples

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

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#

how-to-use-dxgrid-in-server-mode-with-xpo-e1861/CS/XpoNorthwindServerMode/NorthwindXpo.cs#L8

public class Employee : XPObject {
    public Employee(Session session) : base(session) { }

wpf-data-grid-in-server-mode-with-xpo/CS/XpoNorthwindServerMode/NorthwindXpo.cs#L8

public class Employee : XPObject {
    public Employee(Session session) : base(session) { }

XPO_how-to-create-collection-properties-with-associations-at-runtime-e5139/CS/XPOConsoleApplication/Program.cs#L67

public class Supplier : XPObject {
    public Supplier(Session session) : base(session) { }

XPO_how-to-persist-metadata-e269/CS/MetadataObjects.cs#L9

[NonPersistent]
public class MyBaseObject : XPObject {
    public MyBaseObject(Session session, XPClassInfo classInfo) : base(session, classInfo) { }

how-to-use-two-grid-controls-to-display-one-to-many-relationship-e798/CS/PersistentObjects.cs#L5

public class Customer : XPObject {
    public string Name;

VB.NET

how-to-use-dxgrid-in-server-mode-with-xpo-e1861/VB/XpoNorthwindServerMode/NorthwindXpo.vb#L6

Public Class Employee
    Inherits XPObject

wpf-data-grid-in-server-mode-with-xpo/VB/XpoNorthwindServerMode/NorthwindXpo.vb#L6

Public Class Employee
    Inherits XPObject

XPO_how-to-create-collection-properties-with-associations-at-runtime-e5139/VB/XPOConsoleApplication/Program.vb#L69

Public Class Supplier
    Inherits XPObject
    Public Sub New(ByVal session As Session)

XPO_how-to-persist-metadata-e269/VB/MetadataObjects.vb#L10

Public Class MyBaseObject
    Inherits XPObject

how-to-use-two-grid-controls-to-display-one-to-many-relationship-e798/VB/PersistentObjects.vb#L7

Public Class Customer
    Inherits XPObject
    Public Name As String

Implements

IXPObject

IXPSimpleObject

ISessionProvider

IXPModificationsStore

Inheritance

Object

PersistentBase

XPBaseObject

XPCustomObject

XPObject

XtraReportData

DCIntermediateObject