public HttpResponseMessage GetAttachFileList(string AttachFileSearchDTO) { List <AttachFileResultDTO> actionresult = new List <AttachFileResultDTO>(); AttachFileSearchDTO dto = TransformHelper.ConvertBase64JsonStringToDTO <AttachFileSearchDTO>(AttachFileSearchDTO); actionresult = _ICommonServices.GetAttachFileList(dto); HttpResponseMessage result = new HttpResponseMessage { Content = new StringContent(JsonConvert.SerializeObject(actionresult), System.Text.Encoding.GetEncoding("UTF-8"), "application/json") }; return(result); }