Html.BeginForm（）没有通过模型

Question

我有以下CSHTML形式：

model Scraper.Facade.PlayerRow 

@using (Html.BeginForm("Calculate", "Home", FormMethod.Post)) 
{ 
<table class="table table-striped table-bordered table-condensed table-responsive table-hover"> 
    @foreach (var player in Model.AttribsPlayerLine) 
    { 
     <thead> 
      <tr class="success"> 
       @foreach (var attrib in player.AttribsPlayerList) 
       { 
        //@Html.DisplayNameFor(x => Model.tytul) 
        <th data-field="@attrib.attribName">@Html.DisplayFor(x => attrib.attribName) </th> 
       } 
      </tr> 
      <tr class="active"> 
       @foreach (var attrib in player.AttribsPlayerList) 
       { 
        <td data-field="@attrib.attribValue">@Html.TextBoxFor(x => attrib.attribValue)</td> 
       } 
      </tr> 
     </thead> 

    } 
</table> 

<input class="btn-danger" type="submit" name="Next >>" value="Next >>" /> 
} 

这是正确显示，然后我试图让该模型在以下控制器的ActionResult

[HttpPost] 
public ActionResult Calculate(PlayerRow model) 
{ 
    GenericHelper _genericHelper = new GenericHelper(); 
    return View(); 
} 

然而，PlayerRow模型始终为空。

我在做什么错？

这是我的模型定义

public PlayerRow LoadHtmlDoc(string fileLocation) 
{ 
     List<Attrib> attribsHeaderList = new List<Attrib>(); 
     var playerRow = new PlayerRow(); 
     playerRow.AttribsPlayerLine = new List<AttribLine>(); 

     var htmlDoc = new HtmlDocument { OptionFixNestedTags = true }; 

     // There are various options, set as needed 

     // filePath is a path to a file containing the html 
     htmlDoc.Load(fileLocation); 
} 

public class PlayerRow 
{ 
    public List<AttribLine> AttribsPlayerLine; 

} 

---

UPDATE

所有嗨，改了一下我的应用程序的逻辑，基本上具有2所列出已页眉属性和属性对于所有的球员，所以现在只有2个类，我改变了这样的cshtml，现在正在工作： -

@using (Html.BeginForm("Calculate", "Home", FormMethod.Post, new { enctype =  "multipart/form-data" })) 
{ 
<table class="table table-striped table-bordered table-condensed table-responsive table-hover"> 
    <tr> 
     @for (int k = 0; k < Model.HeaderAttributes.Count; k++) 
     { 
      <td> 
       @Html.DisplayFor(x => x.HeaderAttributes[k].AttributeName) 
       @Html.HiddenFor(x => x.HeaderAttributes[k].AttributeName) 
      </td> 
     } 
    </tr> 


    @for (int i = 0; i < Model.PlayerList.Count; i++) 
    { 
     <tr> 
      <td> 
       @Html.DisplayFor(x => x.PlayerList[i].PlayerName) 
       @Html.HiddenFor(x => x.PlayerList[i].PlayerName) 
      </td> 
      @for (int j = 0; j < Model.PlayerList[i].AttributesList.Count; j++) 
      { 
       <td> 
        @Html.DisplayFor(x => x.PlayerList[i].AttributesList[j].AttributeValue) 
        @Html.HiddenFor(x => x.PlayerList[i].AttributesList[j].AttributeValue) 
       </td> 
      } 
     </tr> 
    } 

</table> 


<input class="btn-danger" type="submit" name="Next >>" value="Next >>" /> 
} 

现在我的问题是，谁来授予答案，因为我可以说大多数答案对我的解决方案非常有帮助

Answer 1

以下是您正在尝试做的一个工作示例。这将尽我所能接近你。

让我们先从简单的模型：

public class PlayerRow 
{ 
    public List<AttribLine> AttribsPlayerLine { get; set; } 
} 

public class AttribLine 
{ 
    public string attribName { get; set; } 
    public string attribValue { get; set; } 
} 

注意，重要的是要包括{获得;组; }，因此模型联编程序知道它在块上进行绑定。

@using (Html.BeginForm("Calculate", "PlayerRow", FormMethod.Post)) 
{ 
    <table> 
     @*/*Build out header*/*@ 
     <tr> 
      @foreach (AttribLine a in Model.AttribsPlayerLine) 
      { 
       <th>@Html.Label("title", a.attribName)</th> 
      } 
     </tr> 
     @*/* Add row of our player attributes */*@ 
     <tr> 
      @foreach (AttribLine a in Model.AttribsPlayerLine) 
      { 
       using (Html.BeginCollectionItem("AttribsPlayerLine")) 
       { 
        <td> 
         @Html.TextBox("attribValue", a.attribValue) 
         @Html.Hidden("attribName", a.attribName) 
         @* 
          /* Add any more [AttribLine] properties as hidden here */ 
         *@ 
        </td> 
       } 
      } 
     </tr> 
    </table> 
    <input class="btn-danger" type="submit" name="Next >>" value="Next >>" /> 
} 

注意，重要的是在这里，以确保即使属性由用户不可编辑，它需要：

接下来是一个简化视图只在形式（）部分寻找作为一个隐藏的元素包含在我们的CollectionItem中，因此模型联编程序可以将它设置在[POST]

希望这会有所帮助。

Answer 2

您正确地将模型传递给视图，但是一旦它进入视图，除非您编辑它或在下一个控制器上传递它，否则模型数据将基本上被“清除”，在这种情况下“计算”。

我不知道到底是什么你想传递给控制器​​视图模型的部分，但你可以随时使用这个：

@Html.HiddenFor(model => model.DataYouWantPassedToController) 

现在，你可以随时使用这些物品也来传递数据，如果你要编辑/变更：

@Html.EditorFor(model => model.DataYouWantToEditAndPass)... and so on. 

如果通过不改变或通过它，就像你在做@foreach，该数据将在您的“邮报”的方法中会丢失的数据的简单循环。

Answer 3

尝试使用@Html.EditorForModel()这样的：

@model Scraper.Facade.PlayerRow 

@using (Html.BeginForm("Calculate", "Home", FormMethod.Post)) 
{ 
    @Html.EditorForModel() 

    <input class="btn-danger" type="submit" name="Next >>" value="Next >>" /> 
} 

创建一个名为PlayerRow.cshtml作为PartialView上的文件夹浏览文件/共享/ EditorTemplates并添加以下代码：

@model Scraper.Facade.PlayerRow 
    <table class="table table-striped table-bordered table-condensed table-responsive table-hover"> 
     @foreach (var player in Model.AttribsPlayerLine) 
     { 
      <thead> 
       <tr class="success"> 
        @foreach (var attrib in player.AttribsPlayerList) 
        { 
         //@Html.DisplayNameFor(x => Model.tytul) 
         <th data-field="@attrib.attribName">@Html.DisplayFor(x => attrib.attribName) </th> 
        } 
       </tr> 
       <tr class="active"> 
        @foreach (var attrib in player.AttribsPlayerList) 
        { 
         <td data-field="@attrib.attribValue">@Html.TextBoxFor(x => attrib.attribValue)</td> 
        } 
       </tr> 
      </thead> 

     } 
    </table> 

我认为这会帮助你。