Error while trying to upload files to Zendesk Api 2 in c#

Question

I am trying to upload an image using Zendesk API v2, I am posting the file to /api/v2/uploads.json using RestSharp, and the file appears in the ticket once I create the ticket and add the attachment, the issue is that if I upload an image it won't open on the ticket, it is broken, if its a .txt file it has extra data there, this is my method:

var client = new RestSharp.RestClient(model.RequestUri);
client.Authenticator = new HttpBasicAuthenticator(string.Format("{0}/token", model.Username), model.Password);

var request = new RestRequest("/api/v2/uploads.json", Method.POST);
request.AddHeader("Accept", "application/json");
request.AddHeader("Content-Type", "text/plain");
request.AlwaysMultipartFormData = true;
request.Parameters.Clear();

request.RequestFormat = RestSharp.DataFormat.Json;
//request.AddBody(createUpload);
byte[] bytes = System.IO.File.ReadAllBytes(HttpContext.Current.Server.MapPath("~/Media/uploads/test.txt"));
request.AddFileBytes("Attachment", bytes, "test.txt", contentType: "text/plain");
request.AddParameter("filename", "test.txt");

IRestResponse response = client.Execute(request);
var content = JObject.Parse(response.Content);
return content["upload"]["token"].ToString();

This is the resulting txt file that's attached to the ticket:

-------------------------------28947758029299
Content-Disposition: form-data; name="filename"

test.txt
-------------------------------28947758029299
Content-Disposition: form-data; name="Attachment"; filename="test.txt"
Content-Type: application/octet-stream

testing txt
-------------------------------28947758029299--

The original file just has:

testing txt

Any ideas of what the error could be?

Thanks.

Answer 1

I solved the issue using an external library called ZendeskApi that's recommended in the Zendesk documentation: https://github.com/justeat/ZendeskApiClient

By using this library I was able to upload the attachments successfully and it works with any kind of file as well. It is also very easy to use, my method looks like this now:

IZendeskClient client = new ZendeskClient(
    new Uri(model.RequestUri),
    new ZendeskDefaultConfiguration(model.Username,
            model.Password)
);

UploadRequest request = new UploadRequest() {
    Item = model.Attachment.ConvertToZendeskFile()
};

IResponse<Upload> response = client.Upload.Post(request);
return response.Item.Token;

This is the ConvertToZendeskFile method:

private static ZendeskFile ConvertToZendeskFile(this HttpPostedFileBase rawFile)
{
    return new ZendeskFile()
    {
        FileName = rawFile.FileName,
        ContentType = rawFile.ContentType,
        InputStream = rawFile.InputStream
    };
}

The last step was creating a class that implemented IHttpPostedFile from the API:

public class ZendeskFile : IHttpPostedFile
{
    public string ContentType { get; set; }
    public string FileName { get; set; }
    public Stream InputStream { get; set; }
}

This solved the issue for me, I hope it can help anyone facing the same problem.