FhirClient.SearchUsingPost() using multiple includes throws exception

[ChrisLurge]

When adding more than one includes to the SearchParameter, the SearchUsingPost-Method
throws the exception: 'An item with the same key has already been added.', whereas the Search-Method
works fine. Also using the overloaded method, passing a string-array for the includes, failes
if the array contains more than one element.

Sample code:

`
var sp = new SearchParams();
sp.Parameters.Add(new Tuple<string, string>("_id", "8465,8479"));
sp.Include.Add("subject");

        client.Search<Procedure>(sp);
        // OK
        client.SearchUsingPost<Procedure>(sp);
        // OK

        // Add a further include
        sp.Include.Add("encounter");
        client.Search<Procedure>(sp);
        // OK

        client.SearchUsingPost<Procedure>(sp);
        // Exception! 'An item with the same key has already been added.'

`

I can't see an error in my code.

[marcovisserFurore]

Thanks @ChrisLurge. This is indeed a bug. We use somewhere a dictionary for the parameters, which dictates that the parameters should be unique. Which should be the case. We will solve this.

Thanks for your feedback.

[marcovisserFurore]

To the developer:
In EntryToHttpExtensions.setBodyAndContentType we use a Dictionary (bodyParameters) for building the parameterlist. This should be something that implements IEnumerable<KeyValuePair<string, string>>