對象未添加到收藏

我有這樣的模式：對象未添加到收藏

public class QuestionDTO 
{ 
    public Question Question { get; set; } 
    public OpenQuestionAnwser OpenQuestionAnwser { get; set; } 
    public List<ChoiceQuestionAnwser> ChoiceQuestionAnwsers { get; set; } 

    public void AddChoiceQuestionAnwser() 
    { 
     ChoiceQuestionAnwsers.Add(new ChoiceQuestionAnwser() {ChoiceQuestionAnwserID = ChoiceQuestionAnwsers.Count}); 
    } 

    public void RemoveChoiceQuestionAnwser(int index) 
    { 
     ChoiceQuestionAnwsers.RemoveAt(index); 
    } 

    public void Save() 
    { 

    } 
}

，我想創建一個Ajax形式動態對象添加到收藏，但我有問題，因爲當我的形式發送到服務器我得到一個空的集合。我嘗試了幾種不同的方式，但沒有運氣。

表單代碼：

@using (Ajax.BeginForm("AddChoiceQuestionAnwser","Question",new AjaxOptions 
                    { 
                     UpdateTargetId = "chooseAnwsersTableBody" 
                    })) 

{ 
    <table class="hovered" id="anwsers"> 
     <tr> 
      <th>Poprawna</th> 
      <th>Treść odpowiedzi</th> 
      <th></th> 
     </tr> 
     <tbody id="chooseAnwsersTableBody"> 
      @Html.Partial("ChooseAnwsersView",Model) 
     </tbody> 
    </table> 

    @Html.HiddenFor(a => a.ChoiceQuestionAnwsers);    
    @Html.HiddenFor(a => a.OpenQuestionAnwser) 
    @Html.HiddenFor(a => a.Question) 

    <div> 
     <input type="submit" value="Dodaj odpowiedź"/> 
    </div> 
}

和控制器代碼：

[HttpPost] 
public ActionResult AddChoiceQuestionAnwser(QuestionDTO questionDto) 
{ 
    questionDto.AddChoiceQuestionAnwser(); 
    return PartialView("ChooseAnwsersView", questionDto); 
}

和局部視圖

@model BusinessLogic.DTO.Test.QuestionDTO 
@{ 
    ViewBag.Title = "ChooseAnwsersView"; 
} 

@foreach(var item in Model.ChoiceQuestionAnwsers) 
{ 
    <tr> 
     <td>  @Html.CheckBox("ChoiceQuestionAnwsers["+item.ChoiceQuestionAnwserID+"].IsCorrect",item.IsCorrect,new {@id="ChoiceQuestionAnwsers_"+item.ChoiceQuestionAnwserID+"__IsCorrect"}) 
      @Html.Hidden("ChoiceQuestionAnwsers[" + item.ChoiceQuestionAnwserID + "].ChoiceAnwserType", item.ChoiceAnwserType, new { @id = "ChoiceQuestionAnwsers_" + item.ChoiceQuestionAnwserID + "__ChoiceAnwserType" }) 
      @Html.Hidden("ChoiceQuestionAnwsers[" + item.ChoiceQuestionAnwserID + "].ChoiceQuestionAnwserID", item.ChoiceQuestionAnwserID, new { @id = "ChoiceQuestionAnwsers_" + item.ChoiceQuestionAnwserID + "__ChoiceQuestionAnwserID" }) 
      @Html.Hidden("ChoiceQuestionAnwsers[" + item.ChoiceQuestionAnwserID + "].Data", item.Data, new { @id = "ChoiceQuestionAnwsers_" + item.ChoiceQuestionAnwserID + "__Data" }) 
      @Html.Hidden("ChoiceQuestionAnwsers[" + item.ChoiceQuestionAnwserID + "].Question", item.Question, new { @id = "ChoiceQuestionAnwsers_" + item.ChoiceQuestionAnwserID + "__Question" }) 
      @Html.Hidden("ChoiceQuestionAnwsers[" + item.ChoiceQuestionAnwserID + "].QuestionID", item.QuestionID, new { @id = "ChoiceQuestionAnwsers_" + item.ChoiceQuestionAnwserID + "__QuestionID" }) 
     </td> 
     <td>@Html.Editor("ChoiceQuestionAnwsers[" + item.ChoiceQuestionAnwserID + "].Text", item.Text, new { @id = "ChoiceQuestionAnwsers_" + item.ChoiceQuestionAnwserID + "__Text" }) 
     </td> 
     <td><a href='#' data-bind='click: $root.removeGift'>Usuń</a></td> 
    </tr> 
}

任何人可以幫助我嗎？

來源

2013-02-15 duch1989

嘗試強類型的形式：

@for (int i = 0; i < Model.ChoiceQuestionAnwsers.Count; i++) 
{ 
    @Html.CheckBoxFor(m => m.ChoiceQuestionAnwsers[i].IsCorrect) 
    ... 
}

內，您的局部視圖。

來源

2013-02-15 23:21:15

對象未添加到收藏

回答

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