Esempio: Creare e recuperare le relazioni di entità
Data di pubblicazione: gennaio 2017
Si applica a: Dynamics 365 (online), Dynamics 365 (on-premises), Dynamics CRM 2016, Dynamics CRM Online
Questo codice di esempio è per Microsoft Dynamics 365 (online e locale).Scarica il pacchetto SDK di Microsoft Dynamics CRM. È disponibile nel percorso seguente nel pacchetto di download:
SampleCode\CS\Metadata\Relationships\WorkWithRelationships.cs
Requisiti
Per ulteriori informazioni sui requisiti per l'esecuzione del codice di esempio fornito nell'SDK, vedi Utilizzare il codice di esempio e dell'helper.
Dimostra
In questo esempio viene illustrato come verificare che le entità siano idonee per partecipare a una relazione di entità e viene quindi creata una relazione di entità 1: N e N:N.
Esempio
using System;
using System.Linq;
using System.Xml.Linq;
using System.ServiceModel;
using System.ServiceModel.Description;
// These namespaces are found in the Microsoft.Xrm.Sdk.dll assembly
// found in the SDK\bin folder.
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Client;
using Microsoft.Xrm.Sdk.Query;
using Microsoft.Xrm.Sdk.Metadata;
using Microsoft.Xrm.Sdk.Messages;
// This namespace is found in Microsoft.Crm.Sdk.Proxy.dll assembly
// found in the SDK\bin folder.
using Microsoft.Crm.Sdk.Messages;
namespace Microsoft.Crm.Sdk.Samples
{
/// <summary>
/// This sample shows how to create one to many, many to many relationship.
/// </summary>
public class WorkWithRelationships
{
#region Class Level Members
/// <summary>
/// Stores the organization service proxy.
/// </summary>
private OrganizationServiceProxy _serviceProxy;
// Define the IDs needed for this sample.
private Guid _oneToManyRelationshipId;
private System.String _oneToManyRelationshipName;
private Guid _manyToManyRelationshipId;
private System.String _manyToManyRelationshipName;
#endregion Class Level Members
#region How To Sample Code
/// <summary>
/// Create and configure the organization service proxy.
/// Create one-to-many relationship.
/// Create many-to-many relationship.
/// Optionally delete any entity records that were created for this sample.
/// </summary>
/// <param name="serverConfig">Contains server connection information.</param>
/// <param name="promptForDelete">When True, the user will be prompted to delete all
/// created entities.</param>
public void Run(ServerConnection.Configuration serverConfig, bool promptForDelete)
{
try
{
// Connect to the Organization service.
// The using statement assures that the service proxy will be properly disposed.
using (_serviceProxy = new OrganizationServiceProxy(serverConfig.OrganizationUri, serverConfig.HomeRealmUri,serverConfig.Credentials, serverConfig.DeviceCredentials))
{
// This statement is required to enable early-bound type support.
_serviceProxy.EnableProxyTypes();
bool eligibleCreateOneToManyRelationship =
EligibleCreateOneToManyRelationship("account", "campaign");
if (eligibleCreateOneToManyRelationship)
{
CreateOneToManyRequest createOneToManyRelationshipRequest =
new CreateOneToManyRequest
{
OneToManyRelationship =
new OneToManyRelationshipMetadata
{
ReferencedEntity = "account",
ReferencingEntity = "campaign",
SchemaName = "new_account_campaign",
AssociatedMenuConfiguration = new AssociatedMenuConfiguration
{
Behavior = AssociatedMenuBehavior.UseLabel,
Group = AssociatedMenuGroup.Details,
Label = new Label("Account", 1033),
Order = 10000
},
CascadeConfiguration = new CascadeConfiguration
{
Assign = CascadeType.NoCascade,
Delete = CascadeType.RemoveLink,
Merge = CascadeType.NoCascade,
Reparent = CascadeType.NoCascade,
Share = CascadeType.NoCascade,
Unshare = CascadeType.NoCascade
}
},
Lookup = new LookupAttributeMetadata
{
SchemaName = "new_parent_accountid",
DisplayName = new Label("Account Lookup", 1033),
RequiredLevel = new AttributeRequiredLevelManagedProperty(AttributeRequiredLevel.None),
Description = new Label("Sample Lookup", 1033)
}
};
CreateOneToManyResponse createOneToManyRelationshipResponse =
(CreateOneToManyResponse)_serviceProxy.Execute(
createOneToManyRelationshipRequest);
_oneToManyRelationshipId =
createOneToManyRelationshipResponse.RelationshipId;
_oneToManyRelationshipName =
createOneToManyRelationshipRequest.OneToManyRelationship.SchemaName;
Console.WriteLine(
"The one-to-many relationship has been created between {0} and {1}.",
"account", "campaign");
}
bool accountEligibleParticipate =
EligibleCreateManyToManyRelationship("account");
bool campaignEligibleParticipate =
EligibleCreateManyToManyRelationship("campaign");
if (accountEligibleParticipate && campaignEligibleParticipate)
{
CreateManyToManyRequest createManyToManyRelationshipRequest =
new CreateManyToManyRequest
{
IntersectEntitySchemaName = "new_accounts_campaigns",
ManyToManyRelationship = new ManyToManyRelationshipMetadata
{
SchemaName = "new_accounts_campaigns",
Entity1LogicalName = "account",
Entity1AssociatedMenuConfiguration =
new AssociatedMenuConfiguration
{
Behavior = AssociatedMenuBehavior.UseLabel,
Group = AssociatedMenuGroup.Details,
Label = new Label("Account", 1033),
Order = 10000
},
Entity2LogicalName = "campaign",
Entity2AssociatedMenuConfiguration =
new AssociatedMenuConfiguration
{
Behavior = AssociatedMenuBehavior.UseLabel,
Group = AssociatedMenuGroup.Details,
Label = new Label("Campaign", 1033),
Order = 10000
}
}
};
CreateManyToManyResponse createManytoManyRelationshipResponse =
(CreateManyToManyResponse)_serviceProxy.Execute(
createManyToManyRelationshipRequest);
_manyToManyRelationshipId =
createManytoManyRelationshipResponse.ManyToManyRelationshipId;
_manyToManyRelationshipName =
createManyToManyRelationshipRequest.ManyToManyRelationship.SchemaName;
Console.WriteLine(
"The many-to-many relationship has been created between {0} and {1}.",
"account", "campaign");
}
// Publish the customization changes.
_serviceProxy.Execute(new PublishAllXmlRequest());
//You can use either the Name or the MetadataId of the relationship.
//Retrieve the One-to-many relationship using the MetadataId.
RetrieveRelationshipRequest retrieveOneToManyRequest =
new RetrieveRelationshipRequest { MetadataId = _oneToManyRelationshipId };
RetrieveRelationshipResponse retrieveOneToManyResponse =
(RetrieveRelationshipResponse)_serviceProxy.Execute(retrieveOneToManyRequest);
Console.WriteLine("Retrieved {0} One-to-many relationship by id", retrieveOneToManyResponse.RelationshipMetadata.SchemaName);
//Retrieve the Many-to-many relationship using the Name.
RetrieveRelationshipRequest retrieveManyToManyRequest =
new RetrieveRelationshipRequest { Name = _manyToManyRelationshipName};
RetrieveRelationshipResponse retrieveManyToManyResponse =
(RetrieveRelationshipResponse)_serviceProxy.Execute(retrieveManyToManyRequest);
Console.WriteLine("Retrieved {0} Many-to-Many relationship by Name", retrieveManyToManyResponse.RelationshipMetadata.MetadataId);
DeleteRequiredRecords(promptForDelete);
}
}
// Catch any service fault exceptions that Microsoft Dynamics CRM throws.
catch (FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault>)
{
// You can handle an exception here or pass it back to the calling method.
throw;
}
}
/// <summary>
/// Determines whether the entity can participate in a many-to-many relationship.
/// </summary>
/// <param name="entity">Entity</param>
/// <returns></returns>
public bool EligibleCreateManyToManyRelationship(string entity)
{
CanManyToManyRequest canManyToManyRequest = new CanManyToManyRequest
{
EntityName = entity
};
CanManyToManyResponse canManyToManyResponse =
(CanManyToManyResponse)_serviceProxy.Execute(canManyToManyRequest);
if (!canManyToManyResponse.CanManyToMany)
{
Console.WriteLine(
"Entity {0} can't participate in a many-to-many relationship.",
entity);
}
return canManyToManyResponse.CanManyToMany;
}
/// <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>
/// Deletes the relationships that was created for this sample.
/// <param name="prompt">Indicates whether to prompt the user to delete
/// the records created in this sample.</param>
/// </summary>
public void DeleteRequiredRecords(bool prompt)
{
bool deleteRecords = true;
if (prompt)
{
Console.WriteLine("\nDo you want these entity relationships to be deleted? (y/n)");
String answer = Console.ReadLine();
deleteRecords = (answer.StartsWith("y") || answer.StartsWith("Y"));
}
if (deleteRecords)
{
DeleteRelationshipRequest deleteOneToManyRelationshipRequest =
new DeleteRelationshipRequest
{
Name = "new_account_campaign"
};
_serviceProxy.Execute(deleteOneToManyRelationshipRequest);
DeleteRelationshipRequest deleteManyToManyRelationshipRequest =
new DeleteRelationshipRequest
{
Name = "new_accounts_campaigns"
};
_serviceProxy.Execute(deleteManyToManyRelationshipRequest);
Console.WriteLine("Entity Relationships have been deleted.");
}
}
#endregion How To Sample Code
#region Main
/// <summary>
/// Standard Main() method used by most SDK samples.
/// </summary>
/// <param name="args"></param>
static public void Main(string[] args)
{
try
{
// Obtain the target organization's Web address and client logon
// credentials from the user.
ServerConnection serverConnect = new ServerConnection();
ServerConnection.Configuration config = serverConnect.GetServerConfiguration();
WorkWithRelationships app = new WorkWithRelationships();
app.Run(config, true);
}
catch (FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault> ex)
{
Console.WriteLine("The application terminated with an error.");
Console.WriteLine("Timestamp: {0}", ex.Detail.Timestamp);
Console.WriteLine("Code: {0}", ex.Detail.ErrorCode);
Console.WriteLine("Message: {0}", ex.Detail.Message);
Console.WriteLine("Plugin Trace: {0}", ex.Detail.TraceText);
Console.WriteLine("Inner Fault: {0}",
null == ex.Detail.InnerFault ? "No Inner Fault" : "Has Inner Fault");
}
catch (System.TimeoutException ex)
{
Console.WriteLine("The application terminated with an error.");
Console.WriteLine("Message: {0}", ex.Message);
Console.WriteLine("Stack Trace: {0}", ex.StackTrace);
Console.WriteLine("Inner Fault: {0}",
null == ex.InnerException.Message ? "No Inner Fault" : ex.InnerException.Message);
}
catch (System.Exception ex)
{
Console.WriteLine("The application terminated with an error.");
Console.WriteLine(ex.Message);
// Display the details of the inner exception.
if (ex.InnerException != null)
{
Console.WriteLine(ex.InnerException.Message);
FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault> fe
= ex.InnerException
as FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault>;
if (fe != null)
{
Console.WriteLine("Timestamp: {0}", fe.Detail.Timestamp);
Console.WriteLine("Code: {0}", fe.Detail.ErrorCode);
Console.WriteLine("Message: {0}", fe.Detail.Message);
Console.WriteLine("Plugin Trace: {0}", fe.Detail.TraceText);
Console.WriteLine("Inner Fault: {0}",
null == fe.Detail.InnerFault ? "No Inner Fault" : "Has Inner Fault");
}
}
}
// Additional exceptions to catch: SecurityTokenValidationException, ExpiredSecurityTokenException,
// SecurityAccessDeniedException, MessageSecurityException, and SecurityNegotiationException.
finally
{
Console.WriteLine("Press <Enter> to exit.");
Console.ReadLine();
}
}
#endregion Main
}
}
Vedere anche
Utilizzare il servizio Organizzazione con i metadati di Dynamics 365
Personalizzare i metadati delle relazioni di entità
Creare e recuperare le relazioni di entità
Esempio: Informazioni sulle relazioni di un'entità dump in un file
Microsoft Dynamics 365
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