ExecuteWorkItem.cs

public async Task<Status> ExecuteWorkItem(string token, string projectId, string versionId, string modelName,
        string callBackUrl)
    {
        Console.WriteLine("ActivityId: " + _configuration.ActivityFullName);
        dynamic downloadUrl = await BuildDownloadURL(token, projectId, versionId).ConfigureAwait(false);
        Console.WriteLine("Download URL: " + downloadUrl.Url);
        XrefTreeArgument treeArgument = await BuildUploadURL(token).ConfigureAwait(false);
        Console.WriteLine("TreeArgument: " + treeArgument.Url);
        WorkItem workItemSpec = new WorkItem()
        {
            ActivityId = _configuration.ActivityFullName,
            Arguments = new Dictionary<string, IArgument>()
            {
                // {"inputFile", downloadUrl},
                {"inputFile", new XrefTreeArgument()
                {
                    Url = downloadUrl,
                    PathInZip = modelName + ".rvt",
                    Verb = Verb.Put,
                }},
                {"result", treeArgument},
                {"onComplete", new XrefTreeArgument {Verb = Verb.Post, Url = callBackUrl}}
            },
            LimitProcessingTimeSec = 3600,
        };
        Console.WriteLine("Start Create WorkItem");
        WorkItemStatus workItemStatus = await _designAutomation.CreateWorkItemAsync(workItemSpec).ConfigureAwait(false);
        Console.WriteLine("WorkItemStatus: " + workItemStatus.Status);
        Console.WriteLine("Working Item Id: " + workItemStatus.Id);
        // wait until the work item is finished
        Status status = default;
        while (!workItemStatus.Status.IsDone())
        {
            await Task.Delay(TimeSpan.FromSeconds(2)).ConfigureAwait(false);
            workItemStatus = await _designAutomation.GetWorkitemStatusAsync(workItemStatus.Id).ConfigureAwait(false);
            Console.WriteLine("WorkItemStatus: " + workItemStatus.Status);
            Console.WriteLine("Result:" + workItemStatus.ReportUrl);
            if(workItemStatus.ReportUrl != null)
                WriteReportTxt(workItemStatus.ReportUrl);
            status = workItemStatus.Status;
        }

        // get number after ?version=
        string version = versionId.Split("=")[1];
        string downloadOutput = DownloadOutput(version, token, treeArgument);
        return status;
        //UploadFile(downloadOutput,modelName);
    }