Dynamics Community Forum Thread Details

Hi all,

I'm working on a custom workflow called by a custom action. I'm wondering if when I have more than one output parameter, I must set all the parameters together every time that i want to set only one of them.

        [Input("CustomerExternalId")]
        public InArgument<String> CustomerExternalId { get; set; }

        [Output("Individual")]
        [ReferenceTarget("contact")]
        [Default(null)]
        public OutArgument<EntityReference> Individual { get; set; }

        [Output("Corporate")]
        [ReferenceTarget("account")]
        [Default(null)]
        public OutArgument<EntityReference> Corporate { get; set; }

I have these arguments. Now with this code the custom workflowk works fine:

   protected override void ExecuteInternal(LocalWorkflowContext context)
        {
            string customerexternalid = this.CustomerExternalId.Get(context.CodeActivityContext);

            if (customerexternalid != null)
            {
                var individualQuery = context.CrmContext.CreateQuery("contact").ToList().Where(c => c.GetAttributeValue<string>("etel_externalid") == customerexternalid).FirstOrDefault();
                var corporateQuery = context.CrmContext.CreateQuery("account").ToList().Where(c => c.GetAttributeValue<string>("etel_externalid") == customerexternalid).FirstOrDefault();

                if (individualQuery != null)
                {
                    EntityReference individualReference = new EntityReference(ProxyClasses.Individual.GetLogicalName(), individualQuery.Id);
                    this.Individual.Set(context.CodeActivityContext, individualReference);
      this.Corporate.Set(context.CodeActivityContext, null);
                }

                if (corporateQuery != null)
                {
                    EntityReference corporateReference = new EntityReference(ProxyClasses.Corporate.GetLogicalName(), corporateQuery.Id);
                    this.Corporate.Set(context.CodeActivityContext, corporateReference);
                    this.Individual.Set(context.CodeActivityContext, null);
                }
            }

Instead with the following it doesn't works (Exception: entity reference cannot have id and key attributes empty):

   protected override void ExecuteInternal(LocalWorkflowContext context)
        {
            string customerexternalid = this.CustomerExternalId.Get(context.CodeActivityContext);

            if (customerexternalid != null)
            {
                var individualQuery = context.CrmContext.CreateQuery("contact").ToList().Where(c => c.GetAttributeValue<string>("etel_externalid") == customerexternalid).FirstOrDefault();
                var corporateQuery = context.CrmContext.CreateQuery("account").ToList().Where(c => c.GetAttributeValue<string>("etel_externalid") == customerexternalid).FirstOrDefault();

                if (individualQuery != null)
                {
                    EntityReference individualReference = new EntityReference(ProxyClasses.Individual.GetLogicalName(), individualQuery.Id);
                    this.Individual.Set(context.CodeActivityContext, individualReference);
                }

                if (corporateQuery != null)
                {
                    EntityReference corporateReference = new EntityReference(ProxyClasses.Corporate.GetLogicalName(), corporateQuery.Id);
                    this.Corporate.Set(context.CodeActivityContext, corporateReference);
                }
            }

But I set the default value null, so why I'm doing wrong?