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a guest Jun 13th, 2018 40 Never
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  1. [AllowAnonymous]
  2. [HttpGet]
  3. [Route("DownloadImage")]
  4. public HttpResponseMessage DownloadFile(string fileName)
  5. {
  6.  
  7.             string filePath = Properties.Settings.Default.Path;
  8.             string fullPath = filePath + fileName;
  9.  
  10.     try
  11.     {
  12.         //Check if the file exists. If the file doesn't exist, throw a
  13.   file not found exception
  14.         if (!File.Exists(fullPath))
  15.         {
  16.             throw new HttpResponseException(HttpStatusCode.NotFound);
  17.         }
  18.  
  19.         //Copy the source file stream to MemoryStream and close the filestream
  20.         MemoryStream responseStream = new MemoryStream();
  21.         Stream fileStream = File.Open(fullPath, FileMode.Open);
  22.  
  23.         fileStream.CopyTo(responseStream);
  24.         fileStream.Close();
  25.         responseStream.Position = 0;
  26.  
  27.         HttpResponseMessage response = new HttpResponseMessage();
  28.         response.StatusCode = HttpStatusCode.OK;
  29.  
  30.         //Write the memory stream to HttpResponseMessage content
  31.         response.Content = new StreamContent(responseStream);
  32.        string contentDisposition = string.Concat("attachment;
  33.        filename=", fileName);
  34.        response.Content.Headers.ContentDisposition =
  35.    ContentDispositionHeaderValue.Parse(contentDisposition);
  36.         response.Content.Headers.ContentType =
  37.            new MediaTypeHeaderValue("image/jpeg");
  38.         return response;
  39.     }
  40.     catch
  41.     {
  42.         throw new
  43.   HttpResponseException(HttpStatusCode.InternalServerError);
  44.     }
  45. }
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