MVC：添加住进一家集单选按钮的值，并保存到数据库 [英] mvc: Adding values of radio buttons checked into a collection and saving to database

问题描述

我有一个文本框和一些问题与单选按钮的形式。我希望这种形式的用户可以检查每一个单选按钮。它是强制性的。我想借此检查是否是或否连同每个问题的名称或ID的值，并使用实体框架写入数据库。
如果我知道如何收集这些信息到一个集合，我可以做写入数据库。
我怎样才能把它们添加到收藏吗？

 公共类HomeController的：控制器
            {
                公众的ActionResult指数（）
                {                }                [HttpPost]
                公众的ActionResult ProcessToDb（）
                {                    返回查看（）;
                }
            }        @using（@ Html.BeginForm（ProcessToDb，家，FormMethod.Post））
        {
             ＆LT; H2＆gt;我测试与LT; / H＆GT;            ＆LT; D​​IV＆GT;邮箱地址：LT; / DIV＆GT;
            ＆LT; D​​IV＆GT;
                 @ Html.TextBox（EmailAddress的，空，新的{@class =表格控}）
            ＆LT; / DIV＆GT;            ＆LT; D​​IV＆GT;
                ＆LT;标签=问题1＆gt;的你还好吗＆LT;？/标签＆gt;
                ＆LT;输入类型=电台NAME =1组值=是＆GT;是
                ＆LT;输入类型=电台NAME =1组值=否＆GT;无
            ＆LT; / DIV＆GT;
            ＆LT; D​​IV＆GT;
                ＆LT;标签=问题2＆gt;是正确答案LT＆;？/标签＆gt;
                ＆LT;输入类型=电台NAME =组2值=是＆GT;是
                ＆LT;输入类型=电台NAME =组2值=否＆GT;无
            ＆LT; / DIV＆GT;
            ＆LT; D​​IV＆GT;
                ＆LT;标签=问题3＆GT;你追不上＆LT;？/标签＆gt;
                ＆LT;输入类型=电台NAME =组3值=是＆GT;是
                ＆LT;输入类型=电台NAME =组3值=否＆GT;无
            ＆LT; / DIV＆GT;            ＆LT; D​​IV＆GT;
                ＆LT;输入类型=提交值=发送＆GT; ＆LT;输入类型=复位＆GT;
            ＆LT; / DIV＆GT;
        }
 

解决方案

您需要启动要显示/编辑，例如什么是视图模型重新presenting

 公共类AnswerVM
{
  公众诠释QuestionID {搞定;组; }
  公共字符串QuestionText {搞定;组; }
  公共BOOL答案{搞定;组; }
}
 

然后在GET方法

 公众的ActionResult指数（）
{
  清单＆LT; AnswerVM＆GT;模型=新AnswerVM（）;
  //从数据库中，但是出于测试目的填充集合
  model.Add（新AnswerVM（）{QuestionID = 1，QuestionText =你没事吧？}）;
  model.Add（新AnswerVM（）{QuestionID = 2，QuestionText =答案是正确的呢？}）;
  返回查看（模型）;
}
 

然后在视图

  @model名单＆LT; yourAssembly.AnswerVM＆GT;
@using（Html.BeginForm（））
{
  的for（int i = 0; I＆LT; Model.Count;我++）
  {
    @ Html.HiddenFor（M = GT; M [​​] .QuestionID）
    @ Html.DisplayFor（M = GT; M [​​] .QuestionText）
    ＆LT;标签＆gt;
      @ Html.RadioButtonFor（M = GT; M [​​]。答，真）
      ＆LT;跨度＆GT;是＆LT; / SPAN＆GT;
    ＆LT; /标签＆gt;
    ＆LT;标签＆gt;
      @ Html.RadioButtonFor（M = GT; M [​​]。答，FALSE）
      ＆LT;跨度＆GT否LT; / SPAN＆GT;
    ＆LT; /标签＆gt;
  }
  ＆LT;输入类型=提交/＆GT;
}
 

和POST方法

 公众的ActionResult指数（名单＆LT; AnswerVM＆GT;模型）
{
  的foreach（模型AnswerVM的答案）
  {
    //访问QuestionID和应答属性并保存到数据库中
  }
  //重定向
}
 

I have a form with a textbox and some questions with radio buttons. I want users of this form to check each of the radio buttons. It is mandatory. I want to take the values checked whether Yes or No together with the name or Id of each question and write to the database using entity framework. I can do the writing to the database If I know how to collect this information into a collection. How can I add these to a collection please?

         public class HomeController : Controller
            {
                public ActionResult Index()
                {

                }

                [HttpPost]
                public ActionResult ProcessToDb()
                {

                    return View();
                } 
            }

        @using (@Html.BeginForm("ProcessToDb", "Home", FormMethod.Post))
        { 
             <h2>My Test</h2>

            <div>Email Address</div>
            <div>
                 @Html.TextBox("EmailAddress", null, new { @class = "form-control" })
            </div>

            <div>
                <label for="question1">Are you ok?</label>
                <input type="radio" name="group1"  value="Yes">Yes
                <input type="radio" name="group1" value="No">No
            </div>
            <div>
                <label for="question2">Is the answer correct?</label>
                <input type="radio" name="group2" value="Yes">Yes
                <input type="radio" name="group2" value="No">No
            </div>
            <div>
                <label for="question3"> Did you overtake him ?</label>
                <input type="radio" name="group3" value="Yes">Yes
                <input type="radio" name="group3" value="No">No
            </div>

            <div>
                <input type="submit" value="Send"> <input type="reset">
            </div>
        }

解决方案

You need to start with a view model representing what you want to display/edit, for example

public class AnswerVM
{
  public int QuestionID { get; set; }
  public string QuestionText { get; set; }
  public bool Answer { get; set; }
}

Then in the GET method

public ActionResult Index()
{
  List<AnswerVM> model = new AnswerVM();
  // populate the collection from the database but for testing purposes
  model.Add(new AnswerVM() { QuestionID = 1, QuestionText = "Are you ok?" });
  model.Add(new AnswerVM() { QuestionID = 2, QuestionText = "Is the answer correct?" });
  return View(model);
}

Then in the view

@model List<yourAssembly.AnswerVM>
@using (Html.BeginForm())
{
  for(int i = 0; i < Model.Count; i++)
  {
    @Html.HiddenFor(m => m[i].QuestionID)
    @Html.DisplayFor(m => m[i].QuestionText)
    <label>
      @Html.RadioButtonFor(m => m[i].Answer, true)
      <span>Yes</span>
    </label>
    <label>
      @Html.RadioButtonFor(m => m[i].Answer, false)
      <span>No</span>
    </label>
  }
  <input type="submit" />
}

And the POST method

public ActionResult Index(List<AnswerVM> model)
{
  foreach (AnswerVM answer in model)
  {
    // access the QuestionID and Answer properties and save to the database
  }
  // redirect
}

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