Knowledgebase

When posting UTF8 JSON data with the WebClient.UploadString function, I was getting NULL as value for the parameter on the controller function, the simple fix:

using (var client = new WebClient())
{
    // Set the header so it knows we are sending JSON.
    client.Headers[HttpRequestHeader.ContentType] = "application/json";
    client.Encoding = UTF8Encoding.UTF8;

    // …
    string responseData = client.UploadString("http://localhost/service", utf8RequestData);

    // Deserialise the response into a object
    var outputDTO = JsonConvert.DeserializeObject<GenerateDocumentOutputDto>(responseData);
}

Or you could change the ContentType:

client.Headers[HttpRequestHeader.ContentType] = "application/json; charset=utf-8";