DBTable.PrimaryKey Field

Specifies a DBPrimaryKey object that represents a primary keys for the table. The primary key must be unique to identify the record in the table. It’s also possible to have a table with a primary key made up of two or more columns.

Namespace: DevExpress.Xpo.DB

Assembly: DevExpress.Data.v23.2.dll

NuGet Package: DevExpress.Data

Declaration

C#

public DBPrimaryKey PrimaryKey

VB.NET

Public PrimaryKey As DBPrimaryKey

Field Value

Type
DBPrimaryKey

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the PrimaryKey field.

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#

XAF-How-to-Implement-CRUD-Operations-for-Non-Persistent-Objects-Stored-Remotely/CS/NonPersistentObjectsDemo.Module/BusinessObjects/AuxiliaryStorage.cs#L44

mMessage.Table.AddColumn(new DBColumn("Recepient", false, null, 255, DBColumnType.String));
mMessage.Table.PrimaryKey = new DBPrimaryKey(new object[] { mMessageKey });
mMessage.Create = () => new Message();

VB.NET

XAF-How-to-Implement-CRUD-Operations-for-Non-Persistent-Objects-Stored-Remotely/VB/NonPersistentObjectsDemo.Module/DataStoreMapper.vb#L186

Dim statement = New InsertStatement(mapping.Table, "T")
If mapping.Table.PrimaryKey IsNot Nothing Then
    For Each columnName In mapping.Table.PrimaryKey.Columns