发布任意数量的文本区域

使用您的视图....

@using (Html.BeginForm("QuestionsAndAnswers", "Product"))
{
    foreach (var m in Model.Questions)
    {
    <div class="formfields">
    <input type="hidden" name="QuestionId" id="QuestionId" value="@m.QuestionId" />
    <div>@m.Body</div>
    <textarea name="Answer" id="Answer"></textarea>
    </div>
    }
    <input type="submit" value="Save"/>
    @Html.ActionLink("Cancel", "Index", "Home");
}

这是Jquery。

<script type="text/javascript">
    $.fn.serializeObject = function () {
        var o = {};
        var a = this.serializeArray();
        $.each(a, function () {
            if (o[this.name]) {
                if (!o[this.name].push) {
                    o[this.name] = [o[this.name]];
                }
                o[this.name].push(this.value || '');
            } else {
                o[this.name] = this.value || '';
            }
        });
        return o;
    };
    $(document).ready(function () {
        $("#Submit").click(function () {
            var QuestionAnswerArray = [];
            var QuestionAnswerLength = $(".formfield").length;
            $(".formfield").each(function (i) {
                var test = $(this).find("textarea, input").serializeObject()
                QuestionAnswerArray.push(test);
                if ((i + 1) == QuestionAnswerLength) {
                    $.ajax({
                        type: 'POST',
                        url: '/../Product/QuestionsAndAnswers',
                        data: JSON.stringify(QuestionAnswerArray),
                        contentType: 'application/json; charset=utf-8',
                        dataType: 'json',
                        success: function (return_flag) {                            
                            if (return_flag == true) {
                                alert("Question and Answers Saved Succesfully!");                                
                            } else {
                                alert("Error Occured");
                            }
                        }
                    });
                }
            });
        });
    });
</script>

和你在控制器中的操作....

[HttpPost]
public ActionResult QuestionsAndAnswers(Answers[] answers)
{
                foreach (var item in answers)
                {
                    // do whatever you want here
                }
                return View();
}

型号：

public class Question
{
    public int Id { get; set; }
    public string QuestionText { get; set; }
}
public class Answer
{
    public int Id { get; set; }
    public string QuestionText { get; set; }
    public string AnswerText { get; set; }
}

视图模型：

public class AnswersViewModel
{
    public IList<Answer> Answers { get; set; }
}

控制器：

public class AnswersController : Controller
{
    QuestionRepository _questionRepository = new QuestionRepository();
    public ActionResult Index()
    {
        AnswersViewModel model = new AnswersViewModel();
        model.Answers = new List<Answer>();
        IEnumerable<Question> questions = _questionRepository.GetRandomQuestions();
        foreach (Question question in questions)
        {
            model.Answers.Add(new Answer() { QuestionText = question.QuestionText });
        }
        return View(model);
    }
    [HttpPost]
    public ActionResult Index(AnswersViewModel model)
    {
        //the model will be properly bound here
        return View(model);
    }
}

Views/Answers/Index.cshtml

@model MvcApplication1.Models.AnswersViewModel
@{
    ViewBag.Title = "Index";
}
@using (Html.BeginForm("Index", "Answers", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
    @Html.EditorFor(x => x.Answers)
    <input name="submit" type="submit" value="Submit" />
}

Views/Answers/EditorTemplates/Answer.cshtml

@model MvcApplication1.Models.Answer
@Html.HiddenFor(x => x.Id)
@Html.HiddenFor(x => x.QuestionText)
@Html.DisplayFor(x => x.QuestionText)
<br />
@Html.TextAreaFor(x => x.AnswerText)
<br />

编辑：

我更新了答案以使其更清晰。

我们可以编写控制器来接收来自模型或视图模型的数组，但数组对 ORM 不友好（如果您打算使用域模型直接查看）。考虑到这一点，我们的控制者的观点应适用于IList; IList灵活，不像数组那样不受元素数量的约束;与阵列相比，IList 是 ORM 就绪的。

我们唯一应该做的调整是着眼于;HTML或更确切地说是javascript，没有列表的概念，它只能使用数组或关联数组。承认此限制，我们将从List<ClassType>发出这些项目到javascript友好的数组。

最后，当我们提交时，我们友好的邻居 ASP.NET MVC将为我们处理这些问题，即它可以根据从HTML/javascript提交的数组自动填充我们的List<ClassType>变量，即我们不需要迭代Request.Form，不需要手动填充，我们的代码操作的所有内容都是以模型/视图模型为中心的，因为它们应该是。 ASP.NET MVC程序员的生活很精彩，不是吗？ ;-）

完整代码如下：

型：

namespace SoQna.Models
{
    public class Question
    {
        public int QuestionId { get; set; }
        public string QuestionText { get; set; }
    }
    public class Answer
    {
        public int AnswerId { get; set; }
        public Question Question { get; set; }
        public string AnswerText { get; set; }
    }
}

视图模型：

using System.Collections.Generic;
namespace SoQna.ViewModels
{
    public class QnaViewModel
    {
        public IList<AnswerToQuestion> Answers { get; set; }
    }
    public class AnswerToQuestion
    {
        public int ToQuestionId { get; set; }
        public string QuestionText { get; set; }
        public string AnswerText { get; set; }
    }
}

控制器：

using System.Collections.Generic;
using System.Linq;
using System.Web.Mvc;
namespace SoQna.Controllers
{
  public class HomeController : Controller
  {
    IList<SoQna.Models.Question> _qnaRepo = new List<SoQna.Models.Question>
    {
      new SoQna.Models.Question { QuestionId = 1, 
        QuestionText = 
          "Why is there a proliferation of different kind of ORMs?" 
      },
      new SoQna.Models.Question { 
          QuestionId = 2, QuestionText = "How are you?" 
      },
      new SoQna.Models.Question { 
          QuestionId = 3, QuestionText = "Why the sky is blue?" 
      },          
      new SoQna.Models.Question { 
          QuestionId = 4, QuestionText = "Why is MVC the bees knees?" 
      },          
    };

    public ActionResult Index()
    {
      var qna = new SoQna.ViewModels.QnaViewModel { 
          Answers = new List<SoQna.ViewModels.AnswerToQuestion>() 
      };
      foreach (var question in _qnaRepo)
      {
        if (question.QuestionId == 1) continue; // subjective :-)
        qna.Answers.Add(
          new SoQna.ViewModels.AnswerToQuestion { 
              ToQuestionId = question.QuestionId, 
              QuestionText = question.QuestionText, 
              AnswerText = "Put your answer here" 
          }
        );         
      }
      return View(qna);
    }
    [HttpPost]
    public ViewResult SubmitAnswers(SoQna.ViewModels.QnaViewModel a)
    {
      foreach (var answer in a.Answers)
      {
        answer.QuestionText = _qnaRepo.Single(x => 
           x.QuestionId == answer.ToQuestionId).QuestionText;
      }
      return View(a);
    }
  }//HomeController
}//namespace

查看主页/索引

@model SoQna.ViewModels.QnaViewModel
@{
    ViewBag.Title = "Index";
}
<h2>Hahah</h2>
@using (Html.BeginForm("SubmitAnswers", "Home"))
{

    int i = 0;
    foreach (var answer in Model.Answers)
    {
        @: Question #@(answer.ToQuestionId) <br />
        @Html.Hidden("Answers[" + i + "].ToQuestionId", answer.ToQuestionId)
        @Html.Label("Answers[" + i + "].QuestionText", answer.QuestionText)
        @* 
           to save bandwidth we didn't include QuestionText on submit, 
           this is done by assigning it on Label, and no need to persist 
           QuestionText on Hidden 
        *@
        <br />
        @Html.TextArea("Answers[" + i + "].AnswerText", answer.AnswerText)
        <hr />
        ++i;
    }
    <input type="submit" value="Done" />
}

查看主页/提交答案

@model SoQna.ViewModels.QnaViewModel
@{
    ViewBag.Title = "SubmitAnswers";
}
<h2>SubmitAnswers</h2>

@foreach (var item in Model.Answers)
{
    @: Answer to question: @item.QuestionText
    <br />    
    @item.AnswerText
    <hr />
}

我建议构建隐藏字段，如下所示：

<input type="hidden" name="questionsAndAnswers" 
value="[{'id':questionId, 'question':questionName, 'answer':answerName}, 
        {'id':questionId, 'question':questionName, 'answer':answerName}...] />

然后序列化已发布的隐藏值