CanBeReferencedRequest Class

Applies To: Microsoft Dynamics CRM 2013, Microsoft Dynamics 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.

Namespace: Microsoft.Xrm.Sdk.Messages
Assembly: Microsoft.Xrm.Sdk (in Microsoft.Xrm.Sdk.dll)

Syntax

'Declaration
<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

Example

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;
    }
}

''' <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 Function EligibleCreateOneToManyRelationship(ByVal referencedEntity As String, ByVal referencingEntity As String) As Boolean
 'Checks whether the specified entity can be the primary entity in one-to-many
 'relationship.
 Dim canBeReferencedRequest As CanBeReferencedRequest =
  New CanBeReferencedRequest With {.EntityName = referencedEntity}

 Dim canBeReferencedResponse As CanBeReferencedResponse =
  CType(_serviceProxy.Execute(canBeReferencedRequest), CanBeReferencedResponse)

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

 'Checks whether the specified entity can be the referencing entity in one-to-many
 'relationship.
 Dim canBereferencingRequest As CanBeReferencingRequest =
  New CanBeReferencingRequest With {.EntityName = referencingEntity}

 Dim canBeReferencingResponse As CanBeReferencingResponse =
  CType(_serviceProxy.Execute(canBereferencingRequest), CanBeReferencingResponse)

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


 If canBeReferencedResponse.CanBeReferenced = True AndAlso canBeReferencingResponse.CanBeReferencing = True Then
  Return True
 Else
  Return False
 End If
End Function

Remarks

Message Availability

For this message to work, the caller must be connected to the server.

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.

Inheritance Hierarchy

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

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Platforms

Development Platforms

Windows Server 2008, Windows Server 2012, Windows 7 (All Versions), Windows 8 (All Versions)

Target Platforms

Windows Server 2008, ,Windows Server 2012, ,Windows 7 (All Versions),

Change History

See Also

Reference

CanBeReferencedRequest Members
Microsoft.Xrm.Sdk.Messages Namespace
EligibleCreateOneToManyRelationship
CanBeReferencedResponse

Other Resources

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

Send comments about this topic to Microsoft.
© 2013 Microsoft Corporation. All rights reserved.