TextboxFor传递文本，但RadioButtonFor不

Question

我正在尝试将RadioButtonFor传递给模型。

控制器

[HttpPost] 
    public ActionResult Contact(ApplicationCommentType model) 
    { 
     //send email here 

     //reload form 
     ApplicationCommentType appdata = new ApplicationCommentType(); 
     appdata.CommentTypeData = db.CommentTypes.ToList(); 
     return View(appdata); 
    } 

ApplicationCommentType

public class ApplicationCommentType 
{ 
    public IEnumerable<CommentType> CommentTypeData { get; set; } 
    public String CommentTypeDataSelection { get; set; } 
    public String Name { get; set; } 
    public String Email { get; set; } 
    public String Comment { get; set; } 
} 

CommentType

public partial class CommentType 
{ 
    public int CommentTypeID { get; set; } 
    public string CommentTypeDesc { get; set; } 
} 

查看

@using(@Html.BeginForm("Contact", "Home", FormMethod.Post, new{ @class ="form-horizontal"})){ 
      <fieldset> 
       <legend>Contact Us</legend> 
       <div class="form-group"> 
        @Html.LabelFor(x => x.Email, new {@class="col-lg-2 control-label"}) 
        <div class="col-lg-10"> 
         @Html.TextBoxFor(x => x.Email, new { @class = "form-control" })        
        </div> 
       </div> 
       <div class="form-group"> 
        @Html.LabelFor(x => x.Name, new { @class = "col-lg-2 control-label" }) 
        <div class="col-lg-10"> 
         @Html.TextBoxFor(x => x.Name, new { @class = "form-control" }) 
        </div> 
       </div> 
       <div class="form-group"> 
        <label for="textArea" class="col-lg-2 control-label">Questions, Comments, or Concerns</label> 
        <div class="col-lg-10"> 
         @Html.TextAreaFor(x => x.Comment, new { @class = "form-control" }) 
        </div> 
       </div> 
       <div class="form-group"> 
        <label class="col-lg-2 control-label">Comment Type</label> 
        <div class="col-lg-10">    
         @foreach (var item in Model.CommentTypeData) 
         { 
          <div class="radio"> 
           <label> 
            @Html.RadioButtonFor(x => x.CommentTypeData, item.CommentTypeDesc) 
            @Html.LabelFor(m => m.CommentTypeData, item.CommentTypeDesc, item.CommentTypeID)           
           </label> 
          </div> 
         }  
         @Html.HiddenFor(x => x.CommentTypeDataSelection)   
        </div> 
       </div> 
      </fieldset> 
} 

现在这种作品，所有的文本框的项目工作。在[HttpPost]返回上放置一个断点将产生以下值。

Comment: "awesome" 
    CommentTypeData: Count = 0 
    CommentTypeDataSelection: null 
    Email: "example@example.com" 
    Name: "John Smith" 

不应该CommentTypeData有一个计数？如果我检查请求，那么所选值就在那里。

Request.Params["CommentTypeData"]: "General Improvement Suggestion" 

那么为什么模型没有更新？是否需要从Request对象手动更新模型？

Answer 1

您可以使用@ Html.RadioButtonFor但您应该确保item.CommentTypeDesc兼容无线电类型。

参考MVC4: Two radio buttons for a single boolean model property

希望它能帮助。