EntityTypeConfiguration<TEntityType>.ContainsOptional<TTargetEntity> Method (Expression<Func<TEntityType, TTargetEntity>>)

Configures an optional relationship from this entity type to a single contained navigation property.

Namespace:   System.Web.OData.Builder
Assembly:  System.Web.OData (in System.Web.OData.dll)

Syntax

public NavigationPropertyConfiguration ContainsOptional<TTargetEntity>(
    Expression<Func<TEntityType, TTargetEntity>> navigationPropertyExpression
)
where TTargetEntity : class

public:
generic<typename TTargetEntity>
where TTargetEntity : ref class
NavigationPropertyConfiguration^ ContainsOptional(
    Expression<Func<TEntityType, TTargetEntity>^>^ navigationPropertyExpression
)

member ContainsOptional<'TTargetEntity when 'TTargetEntity : not struct> : 
        navigationPropertyExpression:Expression<Func<'TEntityType, 'TTargetEntity>> -> NavigationPropertyConfiguration

Public Function ContainsOptional(Of TTargetEntity As Class) (
    navigationPropertyExpression As Expression(Of Func(Of TEntityType, TTargetEntity))
) As NavigationPropertyConfiguration

Parameters

• navigationPropertyExpression
  Type: System.Linq.Expressions.Expression<Func<TEntityType, TTargetEntity>>

  A lambda expression representing the navigation property for the relationship. For example, in C# t => t.MyProperty and in Visual Basic .NET Function(t) t.MyProperty.

Return Value

Type: System.Web.OData.Builder.NavigationPropertyConfiguration

A configuration object that can be used to further configure the relationship.

Type Parameters

• TTargetEntity
  The type of the entity at the other end of the relationship.

See Also

EntityTypeConfiguration<TEntityType> Class
System.Web.OData.Builder Namespace

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