IRelatedEnd Interface
Defines the end of a relationship.
Assembly: System.Data.Entity (in System.Data.Entity.dll)
The IRelatedEnd type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | IsLoaded | Gets a value that indicates whether all related objects have been loaded. |
![]() | RelationshipName | Gets the name of the relationship in which this related end participates. |
![]() | RelationshipSet | Returns a reference to the metadata for the related end. |
![]() | SourceRoleName | Gets the role name at the source end of the relationship. |
![]() | TargetRoleName | Gets the role name at the target end of the relationship. |
| Name | Description | |
|---|---|---|
![]() | Add(IEntityWithRelationships) | Adds an object to the related end. |
![]() | Add(Object) | Adds an object to the related end. |
![]() | Attach(IEntityWithRelationships) | Defines a relationship between two attached objects. |
![]() | Attach(Object) | Defines a relationship between two attached objects. |
![]() | CreateSourceQuery | Returns an IEnumerable that represents the objects that belong to the related end. |
![]() | GetEnumerator | Returns an IEnumerator that iterates through the collection of related objects. |
![]() | Load | Loads the related object or objects into this related end with the default merge option. |
![]() | Load(MergeOption) | Loads the related object or objects into the related end with the specified merge option. |
![]() | Remove(IEntityWithRelationships) | Removes an object from the collection of objects at the related end. |
![]() | Remove(Object) | Removes an object from the collection of objects at the related end. |
IRelatedEnd defines the requirements for an object that represents an end in an association. This interface is implemented by the RelatedEnd class. RelatedEnd is the base class for the EntityCollection(Of TEntity) and EntityReference(Of TEntity) classes.
The example in this topic is based on the Adventure Works Sales Model, which was generated by the Entity Data Model Wizard.
The following example adds new SalesOrderHeader entities to the Contact entity. Then it gets all related ends from the Contact entity and displays relationship name, source role name, and target role name for each related end.
Using context As New AdventureWorksEntities() Dim contact As New Contact() ' Create a new SalesOrderHeader. Dim newSalesOrder1 As New SalesOrderHeader() ' Add SalesOrderHeader to the Contact. contact.SalesOrderHeaders.Add(newSalesOrder1) ' Create another SalesOrderHeader. Dim newSalesOrder2 As New SalesOrderHeader() ' Add SalesOrderHeader to the Contact. contact.SalesOrderHeaders.Add(newSalesOrder2) ' Get all related ends Dim relEnds As IEnumerable(Of IRelatedEnd) = DirectCast(contact, IEntityWithRelationships).RelationshipManager.GetAllRelatedEnds() For Each relEnd As IRelatedEnd In relEnds Console.WriteLine("Relationship Name: {0}", relEnd.RelationshipName) Console.WriteLine("Source Role Name: {0}", relEnd.SourceRoleName) Console.WriteLine("Target Role Name: {0}", relEnd.TargetRoleName) Next End Using
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
