Session.IsNewObject(Object) Method

Indicates whether the specified object is contained within the session’s cache.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v19.2.dll

Declaration

C#

public bool IsNewObject(
    object theObject
)

VB.NET

Public Function IsNewObject(
    theObject As Object
) As Boolean

Parameters

Name	Type	Description
theObject	Object	An object which represents the persistent object.

Returns

Type	Description
Boolean	true if the specified object doesn’t contain within the session’s cache; otherwise, false.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the IsNewObject(Object) 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#

XPO_how-to-track-changes-made-to-persistent-objects-and-write-them-into-a-separate-table-e2419/CS/Q149895/Northwind.cs#L30

base.OnSaving();
if(Session.IsNewObject(this)) UpdateAudit(Action.Insert);
else UpdateAudit(Action.Update);

XAF_how-to-generate-a-sequential-and-user-friendly-identifier-field-within-an-xpo-business-e4904/CS/Solution2.Module/BusinessObjects/TestUserFriendlyCodeObject.cs#L18

&& (Session.DataLayer != null)
    && Session.IsNewObject(this)
        && (Session.ObjectLayer is SimpleObjectLayer)

VB.NET

XPO_how-to-track-changes-made-to-persistent-objects-and-write-them-into-a-separate-table-e2419/VB/Q149895/Northwind.vb#L34

MyBase.OnSaving()
If Session.IsNewObject(Me) Then
    UpdateAudit(Action.Insert)

XAF_how-to-generate-a-sequential-and-user-friendly-identifier-field-within-an-xpo-business-e4904/VB/Solution2.Module/BusinessObjects/TestUserFriendlyCodeObject.vb#L24

Protected Overrides Sub OnSaving()
    If Not(TypeOf Session Is NestedUnitOfWork) AndAlso (Session.DataLayer IsNot Nothing) AndAlso Session.IsNewObject(Me) AndAlso (TypeOf Session.ObjectLayer Is SimpleObjectLayer) AndAlso String.IsNullOrEmpty(Code) Then
                'OR