EntityTypeConfiguration<TEntityType>.HasKey<TKey> Method
Configures the key property(s) for this entity type.
Namespace: System.Web.Http.OData.Builder
Assembly: System.Web.Http.OData (in System.Web.Http.OData.dll)
Syntax
'Declaration
Public Function HasKey(Of TKey) ( _
keyDefinitionExpression As Expression(Of Func(Of TEntityType, TKey)) _
) As EntityTypeConfiguration(Of TEntityType)
'Usage
Dim instance As EntityTypeConfiguration
Dim keyDefinitionExpression As Expression(Of Func(Of TEntityType, TKey))
Dim returnValue As EntityTypeConfiguration(Of TEntityType)
returnValue = instance.HasKey(keyDefinitionExpression)
public EntityTypeConfiguration<TEntityType> HasKey<TKey>(
Expression<Func<TEntityType, TKey>> keyDefinitionExpression
)
public:
generic<typename TKey>
EntityTypeConfiguration<TEntityType>^ HasKey(
Expression<Func<TEntityType, TKey>^>^ keyDefinitionExpression
)
member HasKey :
keyDefinitionExpression:Expression<Func<'TEntityType, 'TKey>> -> EntityTypeConfiguration<'TEntityType>
JScript does not support generic types and methods.
Type Parameters
- TKey
The type of key.
Parameters
- keyDefinitionExpression
Type: System.Linq.Expressions.Expression<Func<TEntityType, TKey>>
A lambda expression representing the property to be used as the primary key. For example, in C# t =&gt; t.Id and in Visual Basic .Net Function(t) t.Id.
Return Value
Type: System.Web.Http.OData.Builder.EntityTypeConfiguration<TEntityType>
Returns itself so that multiple calls can be chained.