Receive a zip file from C# .NET Application

[wguerram]

``Hi,

I'm trying to send a zip file from a C# application using HttpClient and multipart/form-data. I already have the zip file, I've tried many ways and have can't make it work.

I've successfuly send the file from Postman and also from a Go application. So the endpoint on Elysia works as expected.

The issue I have is that the file property in the body is undefined when call from C#, on trying multiple combinations I can see that sometime the file make it but Elysia does not parse it correcly and does not detected as a file.

This is my C# code

using (var client = new HttpClient())
using (var fileContent =   new StreamContent(new FileStream(Properties.Settings.Default.Archivos + nombreArchivo, FileMode.Open, FileAccess.Read)))
using (var formData = new MultipartFormDataContent())
{                
    client.DefaultRequestHeaders.Accept.Clear();                
                    
    fileContent.Headers.ContentType = new MediaTypeHeaderValue("application/zip");                

    formData.Add(fileContent, name: "file", fileName: nombreArchivo);    

    HttpResponseMessage res = await client.PostAsync(new Uri(baseAddress, url), formData).ConfigureAwait(false);

    fileContent.Dispose();                
}

When I just do

formData.Add(fileContent, name: "file");

I see content in the body.file property but Elysia does not recongnize it as a valid file.

I've also tried ReadAllBytes instead of FileStream and nothing.

I also tried this

fileContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")
{
    Name = "file",
    FileName = nombreArchivo
};

formData.Add(fileContent);

and does not work either.

Thanks for your help in advance.

[wguerram]

Hi, I found a solution. I had to add double quotes to the file and fileName

formData.Add(fileContent, "\"file\"", $"\"{nombreArchivo}\"");

Found an example here:

https://stackoverflow.com/questions/70068041/set-multipartformdatacontent-for-multipart-form-data-file-upload-right-with-http