Parse XML Bundle issue

I am trying to get Allergy data from a public testing “sandbox”.

curl “

The above works and I get below which I would like to parse:


you can get entire response by doing your own cURL if needed.

I am using Visual Studio 2019 C# code:
using System.Net.Http;
using System.Net.Http.Headers;

using Hl7.Fhir.Model;
using System.Xml;
using System.Xml.Linq;
using Hl7.Fhir.Serialization;
using Hl7.Fhir.Rest;

private async void DoHTMLstuffAllergy()
var url = “ patient=Tbt3KuCY0B5PSrJvCu2j-PlK.aiHsu2xUjUM8bWpetXoB”;

Hl7.Fhir.Rest.FhirClient fhirClient = new FhirClient(url);
This fhirClient seems to be empty;
if followed by:
Resource result = await fhirClient.GetAsync(url);
I get error:

Inner Exception 1:
FormatException: Type checking the data: Encountered unknown element ‘recordedDate’ at location ‘Bundle.entry[0].resource[0].recordedDate[0]’ while parsing

If I use a HttpCient instead:
using var client = new HttpClient();

        var result = await client.GetAsync(url);
        var content = await result.Content.ReadAsStringAsync();

then try to parse:

FhirXmlParser fhirXmlParser = new FhirXmlParser();
Hl7.Fhir.Model.Bundle bund = fhirXmlParser.Parse<Hl7.Fhir.Model.Bundle>(result.ToString());

I get this error:

Inner Exception 1:
FormatException: Invalid Xml encountered. Details: Data at the root level is invalid. Line 1, position 1.

Inner Exception 2:
XmlException: Data at the root level is invalid. Line 1, position 1.

Can anyone help me parse out the 3 Allergies from the Bundle?

Most obvious thing to check is that you have the right version of the dotNet model code - DSTU2 code?

Also, I don’t think that sandbox supports async?

  1. bool bVerVerify = fhirClient.VerifyFhirVersion; returns true. so isn’t ver OK ?
    using HL&.FHIR.STU3 ver 1.4.0 from NuGet (
  2. seems sandbox Async is OK also:
    if I use using var client = new HttpClient();
    then var result = await client.GetAsync(url);
    does return a bundle: