模型绑定列表MVC3不读取值

Question

我已阅读一些帖子，但我仍然觉得很难解决这个问题。我的问题是，我的行动只读取绑定列表中的一些值。这是我的列表发送到视图：

public ActionResult RegisterSurvey() 
    { 
     RegisterSurveyModel model = new RegisterSurveyModel(); 

     var questions = new List<QuestionModel>(); 
     var survey = EFSurvey.Survey.FirstOrDefault(); 
     survey.QuestionSurvey 
      .Where(x => x.AuditingDeleted == false) 
      .Where(x => x.Active == true).ToList().ForEach((item) => 
      { 
       var questionModel = new QuestionModel(); 
       ModelCopier.CopyModel(item, questionModel); 
       questionModel.Answer = string.Empty; 

       questions.Add(questionModel); 

      }); 
     model.Questions = questions; 
     return View(model); 
    } 

这是我的模型：

public class RegisterSurveyModel 
{ 
    public List<QuestionModel> Questions { get; set; } 
} 

public class QuestionModel 
{ 
    public int QuestionSurveyID { get; set; } 
    public string Question { get; set; } 
    public string Answer { get; set; } 
    public bool Suggestion { get; set; } 
} 

这是我的看法：

<div class="SiteSurveyContainer"> 
@using (Html.BeginForm()) 
{ 
    <div class="SurveyUp"> 
     @for (int i = 0; i < Model.Questions.Count(); i++) 
     { 
      if (!Model.Questions[i].Suggestion) 
      { 
      <p>@Model.Questions[i].Question</p> 
      @Html.HiddenFor(x => Model.Questions[i].QuestionSurveyID); 
      @Html.TextBoxFor(x => Model.Questions[i].Answer, new { @class = "surveyBox" }); 
      } 
     } 
    </div> 
    <div class="SurveyBottom"> 
     <div class="line"> 
     </div> 
     <p> 
      Suggestions</p> 
     @for (int i = 0; i < Model.Questions.Where(x => x.Suggestion == true).Count(); i++) 
     { 
      @Html.HiddenFor(x => Model.Questions[i].QuestionSurveyID); 
      @Html.TextAreaFor(x => Model.Questions[i].Answer, new { @class = "surveyTextArea" }) 
     } 
    </div> 
    <div class="surveyBottomButton"> 
     <input type="submit" value="Submit Results" /> 
    </div> 
} 

到目前为止好。无论如何，当我回答所有调查问题时，我只会得到前4个答案......奇怪。任何人都知道这是为什么发生？

Answer 1

你有多个输入控件使用相同的形式使用相同的名称中。

建议的问题是所有问题的子集，所以它们在同一表单上重复两次。这会让ModelBinder黯然失色，因此您的接收行为可能只会看到没有重复的问题。