public IHttpActionResult AddUser(UserMdel newuser) { if (!ModelState.IsValid) { return(BadRequest(ModelState)); } AuthBL AuthBusLayer = new AuthBL(); ApplicationUser OldUser = AuthBusLayer.FindUser(newuser.UserName, newuser.Password); if (OldUser != null) { return(BadRequest("Exist Befor")); } IdentityResult res = AuthBusLayer.CreateUser(newuser); if (res.Succeeded) { return(Ok("User")); } string Errors = ""; foreach (var item in res.Errors) { Errors += item + " "; } return(BadRequest(Errors)); }