Asp.net mvc 使用实体框架更新模型中列表属性的最佳方法是什么？

我的模型如下所示：

public class Parent
{
  public int Id {get; set;}
  public virtual List<Child> Children {get; set;}
}

public class Child
{
  public int Id {get; set;}
  public int age {get; set;}
}

---

您能在更新完成的地方添加控制器代码吗？@dellywheel添加了控制器代码。thx控制器代码看起来正常。我会在

db.SaveChanges（）周围放置一个try catch

并查找

DbUpdateException

    public ActionResult Edit(ViewModel model, String[] selectedChildren)
    {
        var parent= db.Parent.FirstOrDefault(r => r.Id== model.Parent.Id);

        //Delete any child from parent that is not in selected children  
        foreach (var child in selectedChildren)
        {
            if (!(Parent.Children.Contains(child)))
            {
                parent.Children.Remove(child);
            }
        }

        foreach (var s in selectedChildren)
        {
            var child = db.Children
                .FirstOrDefault(p => p.Id == s);
            parent.Children.Add(child);
        }

        if (ModelState.IsValid)
        {
            db.Entry(parent).State = EntityState.Modified;
            db.SaveChanges();
            return RedirectToAction("Index");
        }

        return View(model);
    }