public WebResponseContentModel <List <RoleModel> > GetAllRoles() { WebResponseContentModel <List <RoleModel> > dt = new WebResponseContentModel <List <RoleModel> >(); try { dt = GetResponseFromWebRequest <WebResponseContentModel <List <RoleModel> > >(WebServiceHelper.GetAllRoles(), "get"); } catch (Exception ex) { dt.ValidationErrorAppSide = ConcatenateExceptionMessage(ex); } return(dt); }