asp.net-mvc - How to use ModelState to clear my form after I post my form data,my view model is a viewmodel which has two models?

Question

my view model is a viewmodel which has two models,

  publish class ViewModel
  { 
  public Student StudentModel{get;set;}
  public Teacher TeacherModel {get;set;}
  }

I has two forms called StudentForm and TeacherForm,Which binding StudentModel and TeacherModel respectively.Now I fill in some data in StudentForm and submit it. I use ModelState.Clear(); to clear my StudentForm data ,but It seems not only clear the data of the StudentForm but also the TeacherForm,How can I only clear the data of the StudentForm?

Answer 1

缩短，你可以做

foreach (var key in ModelState.Keys.Where(m => m.StartsWith("StudentModel")).ToList())
                ModelState.Remove(key);

Answer 2

在这种情况下，您将不得不StudentModel从您的ModelStateie中删除每个属性

句法：

ModelState.Remove("PropertyName"); 

例子：

ModelState.Remove("Id"); 
ModelState.Remove("Name"); 
ModelState.Remove("Marks"); 

编辑：对于两个中的特定模型属性

ModelState.Remove("StudentModel.Name"); 

Answer 3

ModelState.Remove("StudentForm"),这里是 MSDN 链接， http: //msdn.microsoft.com/en-us/library/dd470162%28v=vs.108%29.aspx

Answer 4

从操作返回模型时，您可以重新初始化学生对象

例如：

    [HttpPost]
    public ActionResult ActionName(ViewModel model)
    {
       model.StudentModel = new StudentModel();
       return View(model);
    }

Answer 5

注意：ModelState Key 包含您的 ViewModel 名称，例如：

ModelState.Remove("YourViewModelName.YourPropertyName");