Classe CanBeReferencedRequest

Article
12/01/2014

S'applique à: CRM 2015 on-prem, CRM Online

Contains the data that is needed to check whether the specified entity can be the primary entity (one) in a one-to-many relationship.

Espace de noms: Microsoft.Xrm.Sdk.Messages
Assembly: Microsoft.Xrm.Sdk (dans Microsoft.Xrm.Sdk.dll)

Syntaxe

'Déclaration
<DataContractAttribute(Namespace:="https://schemas.microsoft.com/xrm/2011/Contracts")> _
Public NotInheritable Class CanBeReferencedRequest
    Inherits OrganizationRequest

[DataContractAttribute(Namespace="https://schemas.microsoft.com/xrm/2011/Contracts")] 
public sealed class CanBeReferencedRequest : OrganizationRequest

Exemple

The following example shows how to use this message. For this sample to work correctly, you must be connected to the server to get an IOrganizationService interface. For the complete sample, see the link later in this topic.

/// <summary>
/// Determines whether two entities are eligible to participate in a relationship
/// </summary>
/// <param name="referencedEntity">Primary Entity</param>
/// <param name="referencingEntity">Referencing Entity</param>
/// <returns></returns>
public bool EligibleCreateOneToManyRelationship(string referencedEntity, 
    string referencingEntity)
{
    //Checks whether the specified entity can be the primary entity in one-to-many
    //relationship.
    CanBeReferencedRequest canBeReferencedRequest = new CanBeReferencedRequest
    {
        EntityName = referencedEntity
    };

    CanBeReferencedResponse canBeReferencedResponse =
        (CanBeReferencedResponse)_serviceProxy.Execute(canBeReferencedRequest);

    if (!canBeReferencedResponse.CanBeReferenced)
    {
        Console.WriteLine(
            "Entity {0} can't be the primary entity in this one-to-many relationship", 
            referencedEntity);
    }

    //Checks whether the specified entity can be the referencing entity in one-to-many
    //relationship.
    CanBeReferencingRequest canBereferencingRequest = new CanBeReferencingRequest
    {
        EntityName = referencingEntity
    };

    CanBeReferencingResponse canBeReferencingResponse =
        (CanBeReferencingResponse)_serviceProxy.Execute(canBereferencingRequest);

    if (!canBeReferencingResponse.CanBeReferencing)
    {
        Console.WriteLine(
            "Entity {0} can't be the referencing entity in this one-to-many relationship", 
            referencingEntity);
    }


    if (canBeReferencedResponse.CanBeReferenced == true
        && canBeReferencingResponse.CanBeReferencing == true)
    {
        return true;
    }
    else
    {
        return false;
    }
}

Remarques

Message Availability

Pour que ce message fonctionne, l'appelant doit être connecté au serveur.

Usage

Pass an instance of this class to the Execute method, which returns an instance of the CanBeReferencedResponse class.

Privileges and Access Rights

To perform this action, the caller must have the required privileges, as listed in CanBeReferenced Privileges.

Hiérarchie d'héritage

System.Object
Microsoft.Xrm.Sdk.OrganizationRequest
Microsoft.Xrm.Sdk.Messages.CanBeReferencedRequest

Cohérence de thread

Tous les membres statiques publics (Shared dans Visual Basic) de ce type sont thread-safe. Tous les membres d'instance ne sont pas garantis thread-safe.

Plateformes

Plateformes de développement

Windows Vista, Windows Server 2003 et

Plateformes cibles

Windows Vista,Windows XP

Change History

Voir aussi

Référence

Membres CanBeReferencedRequest
Espace de noms Microsoft.Xrm.Sdk.Messages
EligibleCreateOneToManyRelationship
CanBeReferencedResponse

Autres ressources

Sample: Create and Retrieve Entity Relationships
Entity Relationship Eligibility
CanBeReferenced Privileges

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