How to upload multiple files using restsharp?

Question

I want to upload files to this api https://support.crowdin.com/api/add-file/

How to create a parameter named files and add several files to it using RestSharp?

I have written this code so far, but it does not work, RestSharp does not seem to download the file as it sees fit.

  var addUrl = new Uri($"https://api.crowdin.com/api/project/{projectIdentifier}/add-file?key={projectKey}&json="); var restClient = new RestSharp.RestClient("https://api.crowdin.com"); var request = new RestSharp.RestRequest($"api/project/{projectIdentifier}/add-file", RestSharp.Method.POST); request.AlwaysMultipartFormData = true; request.AddQueryParameter("key", projectKey); request.AddQueryParameter("json", ""); var files = new Dictionary<string, byte[]> { { "testfile", File.ReadAllBytes(fileName) } }; request.AddParameter("files", files, RestSharp.ParameterType.RequestBody); var restResponse = restClient.Execute(request); 

It gives me

 { "success":false, "error":{ "code":4, "message":"No files specified in request" } } 

Answer 1

@SirRufo mentioned the solution in the comments, but did not post it as soltion, so I will explain it here.

The http POST method doesn't really have a clue about arrays. Instead of having square brackets in the field names, this is just a convention.

This sample code works:

  var restClient = new RestSharp.RestClient("https://api.crowdin.com"); var request = new RestSharp.RestRequest($"api/project/{projectIdentifier}/add-file", RestSharp.Method.POST); request.AlwaysMultipartFormData = true; request.AddHeader("Content-Type", "multipart/form-data"); request.AddQueryParameter("key", projectKey); request.AddQueryParameter("json", ""); request.AddFile("files[testfile1.pot]", fileName); request.AddFile("files[testfile2.pot]", fileName); // Just Execute(...) is missing ... 

No need to embed custom parameters or anything like that. Adding files with this “special” name is all that is required.

My mistake was that the files[filenamehere.txt] implied a more complex POST body than it really needed.