Sample: Execute multiple requests in transaction
Opdatering til Microsoft Dynamics CRM Online 2016 og Microsoft Dynamics CRM 2016 (lokalt) support batching of requests into a single web service method call. Each request in the batch is executed as part of a single database transaction. Failure of any request to complete successfully causes a rollback of any completed requests and no further processing is performed on requests not yet executed.
This code sample applies to Opdatering til Microsoft Dynamics CRM Online 2016 og Microsoft Dynamics CRM 2016 (lokalt).
Krav
Du kan finde flere oplysninger om kravene til kørsel af den eksempelkode, der findes i denne SDK, under Brug eksempel- og hjælpekoden.
Demonstrerer
This sample shows how to execute multiple organization message requests in a single database transaction by using a single web service method call, passing ExecuteTransactionRequest as a parameter. A snippet showing just the key sections of the sample is shown first, followed by the complete sample code.
Eksempel
This sample uses a single web method call to execute all message requests in a collection as part of a single database transaction. Settings to alter the execution behavior are also shown.
// Create an ExecuteTransactionRequest object.
requestToCreateRecords = new ExecuteTransactionRequest()
{
// Create an empty organization request collection.
Requests = new OrganizationRequestCollection(),
ReturnResponses = true
};
// Create several (local, in memory) entities in a collection.
EntityCollection input = GetCollectionOfEntitiesToCreate();
// Add a CreateRequest for each entity to the request collection.
foreach (var entity in input.Entities)
{
CreateRequest createRequest = new CreateRequest { Target = entity };
requestToCreateRecords.Requests.Add(createRequest);
}
// Execute all the requests in the request collection using a single web method call.
try
{
var responseForCreateRecords =
(ExecuteTransactionResponse)_serviceProxy.Execute(requestToCreateRecords);
int i = 0;
// Display the results returned in the responses.
foreach (var responseItem in responseForCreateRecords.Responses)
{
if (responseItem != null)
DisplayResponse(requestToCreateRecords.Requests[i], responseItem);
i++;
}
}
catch (FaultException<OrganizationServiceFault> ex)
{
Console.WriteLine("Create request failed for the account{0} and the reason being: {1}",
((ExecuteTransactionFault)(ex.Detail)).FaultedRequestIndex + 1, ex.Detail.Message);
throw;
}
Complete sample code
using System;
using System.Collections.Generic;
using System.ServiceModel;
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Client;
using Microsoft.Xrm.Sdk.Metadata;
using Microsoft.Xrm.Sdk.Messages;
using Microsoft.Xrm.Sdk.Query;
namespace Microsoft.Crm.Sdk.Samples
{
class ExecuteTransaction
{
#region Class Level Members
private OrganizationServiceProxy _serviceProxy;
private readonly List<Guid> _newAccountIds = new List<Guid>();
#endregion
#region How To Sample Code
/// <summary>
/// This sample demonstrates how to execute a collection of message requests in a single database transaction,
/// by using a single web service call and optionally return the results.
/// </summary>
/// <seealso cref="https://msdn.microsoft.com/en-us/library/gg328075.aspx#bkmk_transaction"/>
/// <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)
{
ExecuteTransactionRequest requestToCreateRecords = null;
try
{
// Get a reference to the organization service.
using (_serviceProxy = new OrganizationServiceProxy(serverConfig.OrganizationUri, serverConfig.HomeRealmUri, serverConfig.Credentials, serverConfig.DeviceCredentials))
{
// Enable early-bound type support to add/update entity records required for this sample.
_serviceProxy.EnableProxyTypes();
#region Execute Transaction to create records
// Create an ExecuteTransactionRequest object.
requestToCreateRecords = new ExecuteTransactionRequest()
{
// Create an empty organization request collection.
Requests = new OrganizationRequestCollection(),
ReturnResponses = true
};
// Create several (local, in memory) entities in a collection.
EntityCollection input = GetCollectionOfEntitiesToCreate();
// Add a CreateRequest for each entity to the request collection.
foreach (var entity in input.Entities)
{
CreateRequest createRequest = new CreateRequest { Target = entity };
requestToCreateRecords.Requests.Add(createRequest);
}
// Execute all the requests in the request collection using a single web method call.
try
{
var responseForCreateRecords =
(ExecuteTransactionResponse)_serviceProxy.Execute(requestToCreateRecords);
int i = 0;
// Display the results returned in the responses.
foreach (var responseItem in responseForCreateRecords.Responses)
{
if (responseItem != null)
DisplayResponse(requestToCreateRecords.Requests[i], responseItem);
i++;
}
}
catch (FaultException<OrganizationServiceFault> ex)
{
Console.WriteLine("Create request failed for the account{0} and the reason being: {1}",
((ExecuteTransactionFault)(ex.Detail)).FaultedRequestIndex + 1, ex.Detail.Message);
throw;
}
#endregion Execute Transaction to create records
#region Execute Transaction to update records
ExecuteTransactionRequest requestForUpdates = new ExecuteTransactionRequest()
{
Requests = new OrganizationRequestCollection()
};
// Update the entities that were previously created.
EntityCollection update = GetCollectionOfEntitiesToUpdate();
foreach (var entity in update.Entities)
{
UpdateRequest updateRequest = new UpdateRequest { Target = entity };
requestForUpdates.Requests.Add(updateRequest);
}
try
{
ExecuteTransactionResponse responseForUpdates =
(ExecuteTransactionResponse)_serviceProxy.Execute(requestForUpdates);
Console.WriteLine("Entity records are updated.");
}
catch (FaultException<OrganizationServiceFault> ex)
{
Console.WriteLine("Update request failed for the account{0} and the reason being: {1}",
((ExecuteTransactionFault)(ex.Detail)).FaultedRequestIndex + 1, ex.Detail.Message);
}
#endregion Execute Transaction for update records
DeleteRequiredRecords(promptforDelete);
}
}
catch (FaultException<OrganizationServiceFault> fault)
{
// Check if the maximum batch size has been exceeded. The maximum batch size is only included in the fault if it
// the input request collection count exceeds the maximum batch size.
if (fault.Detail.ErrorDetails.Contains("MaxBatchSize"))
{
int maxBatchSize = Convert.ToInt32(fault.Detail.ErrorDetails["MaxBatchSize"]);
if (maxBatchSize < requestToCreateRecords.Requests.Count)
{
// Here you could reduce the size of your request collection and re-submit the ExecuteTransaction request.
// For this sample, that only issues a few requests per batch, we will just print out some info. However,
// this code will never be executed because the default max batch size is 1000.
Console.WriteLine("The input request collection contains %0 requests, which exceeds the maximum allowed (%1)",
requestToCreateRecords.Requests.Count, maxBatchSize);
}
}
// Re-throw so Main() can process the fault.
throw;
}
}
#region Public Methods
/// <summary>
/// Deletes any entity records that were 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 to delete the account record? (y/n) [y]: ");
String answer = Console.ReadLine();
deleteRecords = (answer.StartsWith("y") || answer.StartsWith("Y") || answer == String.Empty);
}
if (!deleteRecords)
return;
ExecuteMultipleRequest requestWithNoResults = new ExecuteMultipleRequest()
{
// Set the execution behavior to continue and to not return responses.
Settings = new ExecuteMultipleSettings()
{
ContinueOnError = true,
ReturnResponses = false
},
Requests = new OrganizationRequestCollection()
};
// Get all the entities into a collection to delete
EntityCollection delete = GetCollectionOfEntitiesToDelete();
foreach (var entity in delete.Entities)
{
DeleteRequest deleteRequest = new DeleteRequest { Target = entity.ToEntityReference() };
requestWithNoResults.Requests.Add(deleteRequest);
}
ExecuteMultipleResponse responseWithNoResults =
(ExecuteMultipleResponse)_serviceProxy.Execute(requestWithNoResults);
// There should be no responses unless there was an error.
if (responseWithNoResults.Responses.Count > 0)
{
foreach (var responseItem in responseWithNoResults.Responses)
{
if (responseItem.Fault != null)
DisplayFault(requestWithNoResults.Requests[responseItem.RequestIndex],
responseItem.RequestIndex, responseItem.Fault);
}
}
else
{
Console.WriteLine("All account records have been deleted successfully.");
}
}
#endregion
#region Private Methods
/// <summary>
/// Create a collection of new entity objects.
/// </summary>
/// <returns>A collection of entity objects.</returns>
private EntityCollection GetCollectionOfEntitiesToCreate()
{
return new EntityCollection()
{
EntityName = Account.EntityLogicalName,
Entities = {
new Account { Name = "ExecuteTransaction Example Account 1" },
new Account { Name = "ExecuteTransaction Example Account 2" },
new Account { Name = "ExecuteTransaction Example Account 3" },
new Account { Name = "ExecuteTransaction Example Account 4" },
new Account { Name = "ExecuteTransaction Example Account 5" }
}
};
}
/// <summary>
/// Display the response of an organization message request.
/// </summary>
/// <param name="organizationRequest">The organization message request.</param>
/// <param name="organizationResponse">The organization message response.</param>
private void DisplayResponse(OrganizationRequest organizationRequest, OrganizationResponse organizationResponse)
{
Console.WriteLine("Created " + ((Account)organizationRequest.Parameters["Target"]).Name
+ " with account id as " + organizationResponse.Results["id"].ToString());
_newAccountIds.Add(new Guid(organizationResponse.Results["id"].ToString()));
}
/// <summary>
/// Create a collection of entity objects for updating. Give these entities a new
/// name for the update.
/// </summary>
/// <returns>An entity collection.</returns>
private EntityCollection GetCollectionOfEntitiesToUpdate()
{
EntityCollection collection = new EntityCollection()
{
EntityName = Account.EntityLogicalName
};
for (int i = 1; i <= _newAccountIds.Count; i++)
{
collection.Entities.Add(
new Account
{
Name = "Updated Account Name " + i.ToString(),
Id = _newAccountIds[i - 1]
});
}
return collection;
}
/// <summary>
/// Delete a collection of entity objects.
/// </summary>
/// <returns>A collection of entity objects</returns>
private EntityCollection GetCollectionOfEntitiesToDelete()
{
EntityCollection collection = new EntityCollection()
{
EntityName = Account.EntityLogicalName
};
for (int i = 1; i <= _newAccountIds.Count; i++)
{
collection.Entities.Add(
new Account
{
Id = _newAccountIds[i - 1]
});
}
return collection;
}
/// <summary>
/// Display the fault that resulted from processing an organization message request.
/// </summary>
/// <param name="organizationRequest">The organization message request.</param>
/// <param name="count">nth request number from ExecuteMultiple request</param>
/// <param name="organizationServiceFault">A WCF fault.</param>
private void DisplayFault(OrganizationRequest organizationRequest, int count,
OrganizationServiceFault organizationServiceFault)
{
Console.WriteLine("A fault occurred when processing {1} request, at index {0} in the request collection with a fault message: {2}", count + 1,
organizationRequest.RequestName,
organizationServiceFault.Message);
}
#endregion
#endregion How To Sample Code
#region Main method
/// <summary>
/// Standard Main() method used by most SDK samples.
/// </summary>
/// <param name="args"></param>
static 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();
var app = new ExecuteTransaction();
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("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("Trace: {0}", fe.Detail.TraceText);
Console.WriteLine("Inner Fault: {0}",
null == fe.Detail.InnerFault ? "No Inner Fault" : "Has Inner Fault");
}
}
}
finally
{
Console.WriteLine("Press <Enter> to exit.");
Console.ReadLine();
}
}
#endregion Main method
}
}
Se også
Reference
Execute messages in a single database transaction
Andre ressourcer
Bruge organisationstjenesten til at læse og skrive data eller metadata
Microsoft Dynamics CRM 2016 and Microsoft Dynamics CRM Online
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