自定义工作流程显示传递参数时出错

Question

Dynamics CRM 365

在自定义操作中添加CustomWorkflow的步骤 没有参数CustomWorkflow执行成功 但参数显示错误 “System.AggregateException：发生了一个或多个错误。”

    protected override void Execute(CodeActivityContext context)
    {
        ITracingService _tracer = context.GetExtension<ITracingService>();
        IWorkflowContext _workflowContext = context.GetExtension<IWorkflowContext>();
        IOrganizationServiceFactory _serviceFactory = context.GetExtension<IOrganizationServiceFactory>();
        IOrganizationService _service = _serviceFactory.CreateOrganizationService(_workflowContext.UserId);
        try
        {
            string _emailId = EmailID.Get<string>(context);
            throw new InvalidPluginExecutionException("An Error Occured" + _emailId);
        }
        catch (FaultException<OrganizationServiceFault> ex)
        {
            throw new InvalidPluginExecutionException("An Error Occured in Followup Plugin!", ex);
        }
        catch (Exception ex) {
            _tracer.Trace("Exception", ex.ToString());
            throw;
        }
    }

    [Input("EmailID")]
    public InArgument<string> EmailID { get; set; }
    [Input("SubPoId")]
    public InArgument<string> SubPOId { get; set; }

Answer 1

如果您删除<string>，那么您的行如下所示：

string _emailId = EmailID.Get(context);