protected void SaveZipFile(long userId, HttpPostedFile file) { FileModule fileModule = new FileModule(); string filename = file.FileName; string extension = System.IO.Path.GetExtension(file.FileName.ToLower()); if (extension != ".zip") throw new Exception("You can only upload zip files."); hidden_uploaded_file_ID.Value = fileModule.saveFileForUserId(userId, file.InputStream, FILE_TYPE.ZIP, file.FileName).UPLOADEDFILE_ID.ToString(); hidden_uploaded_file_name.Value = filename; }