如何使用CRM Dynamics 2013/2015中的插件用相关实体更新CRM中的实体

Question

I am new to CRM and I am battling to update an entity using a Plugin, I have registered a plugin on the PhoneCall Entity pre-operation on create message, when I then query the regarding entity and write data from the regarding entity to my PhoneCall Entity, although I seem to get an error that the record with GUID xxxxx does not exist.

Here is my code below;

  public void Execute(IServiceProvider serviceProvider)
    {
        ITracingService tracingService = (ITracingService)serviceProvider.GetService(typeof(ITracingService));
        IPluginExecutionContext context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext));

        if (context == null)
        {
            throw new ArgumentNullException("localContext");
        }

        IOrganizationServiceFactory serviceFactory = (IOrganizationServiceFactory)serviceProvider.GetService(typeof(IOrganizationServiceFactory));

        IOrganizationService service = serviceFactory.CreateOrganizationService(context.InitiatingUserId);

        if (context.InputParameters.Contains("Target") && context.InputParameters["Target"] is Entity)
        {
            Entity phoneCallEntity = (Entity)context.InputParameters["Target"];

            if (phoneCallEntity.LogicalName != "phonecall")
                return;


            if (context.MessageName == "Create")
            {
                try
                {
                    QueryExpression qe = new QueryExpression("new_zoiperhistorydata");
                    qe.ColumnSet = new ColumnSet("new_regardingobjectid", "new_callduration");

                    var ZoiperData = service.RetrieveMultiple(qe);

                    if (ZoiperData != null && ZoiperData.Entities.Count > 0)
                    {

                        foreach (Entity entity in ZoiperData.Entities)
                        {
                            if (entity.Attributes.Contains("new_callduration"))
                                phoneCallEntity.Attributes["new_callduration"] = entity.Attributes["new_callduration"].ToString();
                        }
                    }

                    service.Update(phoneCallEntity);
                }
                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");
                        }
                    }
                }


            }

The code fails on the service.Update(phoneCallEntity) ;

Your help will be appreciated.

Answer 1

The problem is that you run your plugin in the pre-operation stage of the Create event. In deed is the phonecall not created in this stage (and has no Id) and you get the reported error message. Actually you don´t have to update the phonecall by yourself using the service.Update method. Since the operation runs through you can just update the fields you like on the Target and let the CRM do the rest :)