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NonPersistentObjectSpace.IsNewObject(Object) Method

Indicates whether a specified object has been created but has not been saved to the database.

Namespace: DevExpress.ExpressApp

Assembly: DevExpress.ExpressApp.v19.1.dll

Declaration

public override bool IsNewObject(
    object obj
)
Public Overrides Function IsNewObject(
    obj As Object
) As Boolean

Parameters

Name Type Description
obj Object

A object to be tested.

Returns

Type Description
Boolean

true if the specified object has not yet been saved to the database; otherwise, false.

Remarks

The objects that are created both directly via the IObjectSpace.CreateObject method and by means of built-in Actions (e.g. the New Action) are not saved to the database immediately. They are saved only when the IObjectSpace.CommitChanges method is called, directly or by means of built-in Actions (e.g. the Save Action). Until an object created within the current Object Space is not saved to the database, the IsNewObject method returns true. After saving, the IsNewObject method returns false. It is presumed that this property must return false if the object passed as the parameter is not persistent, or if it does not belong to the current Object Space.

See Also