RepositoryExtensions.ProjectionHasPrimaryKey<TEntity, TProjection, TPrimaryKey>(IRepository<TEntity, TPrimaryKey>, TProjection) Method

Determines whether the given entity has the primary key assigned (the primary key is not null).

Namespace: DevExpress.Mvvm.DataModel

Assembly: DevExpress.Mvvm.v23.2.DataModel.dll

NuGet Package: DevExpress.Scaffolding.Core

Declaration

C#

public static bool ProjectionHasPrimaryKey<TEntity, TProjection, TPrimaryKey>(
    this IRepository<TEntity, TPrimaryKey> repository,
    TProjection projectionEntity
)
    where TEntity : class

VB.NET

<ExtensionAttribute>
Public Shared Function ProjectionHasPrimaryKey(Of TEntity As Class, TProjection, TPrimaryKey)(
    repository As IRepository(Of TEntity, TPrimaryKey),
    projectionEntity As TProjection
) As Boolean

Parameters

Name	Type	Description
repository	IRepository<TEntity, TPrimaryKey>	A repository.
projectionEntity	TProjection	An entity.

Type Parameters

Name
TEntity
TProjection
TPrimaryKey

Returns

Type	Description
Boolean	true if the given entity has the primary key assigned; otherwise, false.

Remarks

The ProjectionHasPrimaryKey<TEntity, TProjection, TPrimaryKey> function always returns true if the primary key is a non-nullable value type.