Call external api from screen to get the data

If you have a table (DAC) to hold the transactions then you can create a graph to display those transactions in a grid.  That graph can have a PXAction button that the user can click and that allows you to run code to log on to your external API and populate the grid for the user to review and select.

I would expect that you could do this with an unbound DAC, too.

I have managed to integrate the call of the HttpClient into my graph. The problem which i am facing is that i cannot figure it out why my view does not receive any of the data. I have also insert them into the cache with a button call but somehow it does not show at all….

In my graph constructor i am only initializing my client and its configuration for the async call.

        public PXFilter<ParticipantFilter> Filter;
        public PXSave<UnboundParticipant> Save;
        public PXCancel<UnboundParticipant> Cancel;

        // master view
        public PXSelect<UnboundParticipant> MasterView;

        #region PXFilteredProcessing

        [PXVirtualDAC]
        [PXFilterable]
        public PXFilteredProcessing<UnboundParticipant, ParticipantFilter> UnboundView;

        protected virtual IEnumerable unboundView()
        {
            foreach (UnboundParticipant item in UnboundView.Cache.Cached)
            {
                yield return item;
            }            
        }

        #endregion
        
        #region Actions

        public PXAction<UnboundParticipant> GetData;

        [PXButton]
        [PXUIField(DisplayName = "Get Data", Enabled = true)]
        protected virtual void getData()
        {
            PXLongOperation.StartOperation(this, delegate
            {
                GetParticipants();
            });
        }

        private async void GetParticipants()
        {
            UnboundView.Cache.Clear();

            var participants = await this.client.GetParticipants();
            if (participants == null || participants.Count == 0)
            {
                return;
            }

            foreach (var participant in participants)
            {
                var dacParticipant = new UnboundParticipant()
                {
                    Id = participant.Id,
                    FirstName = participant.FirstName,
                    LastName = participant.LastName,
                    Email = participant.Email,
                    Organization = participant.Organization,
                    Phone = participant.Phone,
                    Created = participant.Created,
                    Updated = participant.Updated
                };

                UnboundView.Insert(dacParticipant);
                UnboundView.Cache.Insert(dacParticipant);          
            }
        }

        #endregion