KeyAttribute(Boolean) Constructor

Initializes a new instance of the KeyAttribute class with the specified KeyAttribute.AutoGenerate property.

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#

public KeyAttribute(
    bool autoGenerate
)

VB.NET

Public Sub New(
    autoGenerate As Boolean
)

Parameters

Name	Type	Description
autoGenerate	Boolean	true to generate the key automatically; otherwise, false. This value is assigned to the KeyAttribute.AutoGenerate property.

Remarks

Automatic key generation is supported for Int32, Int64 and Guid type keys.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the KeyAttribute(Boolean) constructor.

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#

winforms-filtercontrol-implement-ifilteredcomponent/CS/Q200298/Northwind.cs#L8

int fCategoryID;
[Key(true)]
public int CategoryID {

XPO_how-to-implement-odata4-service-with-xpo/CS/ODataService/Models/OrderDetail.cs#L14

int fOrderDetailID;
[Key(true)]
public int OrderDetailID {

XPO_how-to-make-user-friendly-object-identifiers-e825/CS/XpoSequencer.cs#L13

// use GUID keys to prepare your database for replication
[Key(true)]
public Guid Oid;

XPO_how-to-implement-the-ivirtualtreelistdata-interface-in-xpo-e1601/CS/Q212620/Northwind.cs#L10

int fCategoryID;
[Key(true)]
public int CategoryID {

winforms-grid-enable-server-mode-for-detail-view/CS/Q205267_4/PersistentClasses1.cs#L7

int fEmployeeID;
[Key(true)]
public int EmployeeID {

VB.NET

winforms-filtercontrol-implement-ifilteredcomponent/VB/Q200298/Northwind.vb#L11

<Key(True)>
Public Property CategoryID As Integer

XPO_how-to-make-user-friendly-object-identifiers-e825/VB/XpoSequencer.vb#L15

' use GUID keys to prepare your database for replication
<Key(True)> _
Public Oid As Guid

XPO_how-to-implement-the-ivirtualtreelistdata-interface-in-xpo-e1601/VB/Q212620/Northwind.vb#L13

<Key(True)>
Public Property CategoryID As Integer

winforms-grid-enable-server-mode-for-detail-view/VB/Q205267_4/PersistentClasses1.vb#L10

<Key(True)>
Public Property EmployeeID As Integer

XPO_how-to-read-and-manipulate-xpo-objects-stored-in-multiple-databases-simultaneously-t475838/VB/ConsoleApplication/Model1.vb#L14

Private fContactID As Integer
<Key(True)> _
Public Property ContactID() As Integer