public async Task <IActionResult> OnPostUploadAsync(IFormFile file)
        {
            var filePath = Path.GetTempFileName();

            using (var stream = System.IO.File.Create(filePath))
            {
                await file.CopyToAsync(stream);
            };

            var filecontent = XDocument.Load(filePath);

            if (filecontent != null)
            {
                _ctx.ProcessXmlData(filecontent);
                System.IO.File.Delete(filePath);

                return(Ok(filecontent));
            }
            else
            {
                return(BadRequest());
            };
        }