File POST in Web API

FilePost.cs

[HttpPost, Route("api/upload")]
public async Task<HttpResponseMessage> Upload()
{
    if (!Request.Content.IsMimeMultipartContent())
         return Request.CreateErrorResponse(HttpStatusCode.UnsupportedMediaType, "expected multi-part form content.");      

    var provider = new MultipartMemoryStreamProvider();
    await Request.Content.ReadAsMultipartAsync(provider);
    foreach (var file in provider.Contents)
    {
        var filename = file.Headers.ContentDisposition.FileName.Trim('\"');
        var buffer = await file.ReadAsByteArrayAsync();
        //Do whatever you want with filename and its binaray data.
    }

    return Ok();
}