public ActionResult MultiRowDelete(string Ids) { string validationResponse = ""; string[] sIDs = Ids.Split("|"); List <long> iDs = new List <long>(); long nID; string sMaterial; MaterialsPost materials; sIDs.ToList() .ForEach(s => { if (long.TryParse(s, out nID)) { sMaterial = _materialsService.Get(nID).sMaterial; if (!_materialsService.VerifyMaterialDeleteOK(nID, sMaterial).Any()) { materials = _materialsService.GetPost(nID); materials.UserName = User.Identity.Name; _materialsService.Delete(materials); iDs.Add(nID); } } } ); iDs.ForEach(n => validationResponse = validationResponse + ", " + n.ToString()); return(Json(validationResponse)); }