LINQ to Entities 不识别方法“System.String ToString()”，因此该方法无法转换为存储表达式。

 

行 34:         public ActionResult CreateUser ()行 35:         {行 36:             ViewBag.DeptTypes = _dbContext.DepartmentTypes.Select(x => new SelectListItem() { Text = x.Description, Value = x.Id.ToString() }).ToList();行 37:             return View();行 38:         } 解决方法：Select前ToList()或ToArray()

行 34:         public ActionResult CreateUser ()行 35:         {行 36:             ViewBag.DeptTypes = _dbContext.DepartmentTypes.ToList().Select(x => new SelectListItem() { Text = x.Description, Value = x.Id.ToString() }).ToList();行 37:             return View();行 38:         }