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C# 如何在一个表格中插入所有问题?_C#_Asp.net Mvc - Fatal编程技术网

C# 如何在一个表格中插入所有问题?

C# 如何在一个表格中插入所有问题?,c#,asp.net-mvc,C#,Asp.net Mvc,有3张桌子: 问题(问题ID、问题文本) 调查(调查ID、问题ID、用户ID、答案文本、评论) 用户(用户ID、用户名) 如何在视图中为问题表中的所有问题生成表单 例如,我有90个问题,当我回答这张表格5次时,表格中的答案必须有450条记录 控制器: public class SurveysController : Controller { private TESTEntities db = new TESTEntities(); // GET: Surveys pub

有3张桌子:

  • 问题(问题ID、问题文本)
  • 调查(调查ID、问题ID、用户ID、答案文本、评论)
  • 用户(用户ID、用户名)
  • 如何在视图中为问题表中的所有问题生成表单

    例如,我有90个问题,当我回答这张表格5次时,表格中的答案必须有450条记录

    控制器:

    public class SurveysController : Controller
    {
        private TESTEntities db = new TESTEntities();
    
        // GET: Surveys
        public ActionResult Index()
        {
            var surveys = db.Surveys.Include(s => s.Question).Include(s => s.User);
            return View(surveys.ToList());
        }
    
        // GET: Surveys/Details/5
        public ActionResult Details(int? id)
        {
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
            Survey survey = db.Surveys.Find(id);
            if (survey == null)
            {
                return HttpNotFound();
            }
            return View(survey);
        }
    
        // GET: Surveys/Create
        public ActionResult Create()
        {
           ViewBag.QuestionId = new SelectList(db.Questions, "QuesionId", "QuestionText");
            ViewBag.UserId = new SelectList(db.Users, "UserId", "Name");
            return View();
        }
    
        // POST: Surveys/Create
        // To protect from overposting attacks, please enable the specific properties you want to bind to, for 
        // more details see http://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Create([Bind(Include = "SuerveyId,UserId,QuestionId,Answer,Comment")] Survey survey)
        {
            if (ModelState.IsValid)
            {
                db.Surveys.Add(survey);
                db.SaveChanges();
                return RedirectToAction("Index");
            }
    
            ViewBag.QuestionId = new SelectList(db.Questions, "QuesionId", "QuestionText", survey.QuestionId);
            ViewBag.UserId = new SelectList(db.Users, "UserId", "Name", survey.UserId);
            return View(survey);
        }
    
        // GET: Surveys/Edit/5
        public ActionResult Edit(int? id)
        {
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
            Survey survey = db.Surveys.Find(id);
            if (survey == null)
            {
                return HttpNotFound();
            }
            ViewBag.QuestionId = new SelectList(db.Questions, "QuesionId", "QuestionText", survey.QuestionId);
            ViewBag.UserId = new SelectList(db.Users, "UserId", "Name", survey.UserId);
            return View(survey);
        }
    
        // POST: Surveys/Edit/5
        // To protect from overposting attacks, please enable the specific properties you want to bind to, for 
        // more details see http://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Edit([Bind(Include = "SuerveyId,UserId,QuestionId,Answer,Comment")] Survey survey)
        {
            if (ModelState.IsValid)
            {
                db.Entry(survey).State = EntityState.Modified;
                db.SaveChanges();
                return RedirectToAction("Index");
            }
            ViewBag.QuestionId = new SelectList(db.Questions, "QuesionId", "QuestionText", survey.QuestionId);
            ViewBag.UserId = new SelectList(db.Users, "UserId", "Name", survey.UserId);
            return View(survey);
        }
    
        // GET: Surveys/Delete/5
        public ActionResult Delete(int? id)
        {
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
            Survey survey = db.Surveys.Find(id);
            if (survey == null)
            {
                return HttpNotFound();
            }
            return View(survey);
        }
    
        // POST: Surveys/Delete/5
        [HttpPost, ActionName("Delete")]
        [ValidateAntiForgeryToken]
        public ActionResult DeleteConfirmed(int id)
        {
            Survey survey = db.Surveys.Find(id);
            db.Surveys.Remove(survey);
            db.SaveChanges();
            return RedirectToAction("Index");
        }
    
        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                db.Dispose();
            }
            base.Dispose(disposing);
        }
    }
    
    创建视图:

    @model TEST.Models.Survey
    
    @{
        ViewBag.Title = "Create";
    }
    
    <h2>Create</h2>
    
    @using (Html.BeginForm()) 
    {
        @Html.AntiForgeryToken()
    
        <div class="form-horizontal">
            <h4>Survey</h4>
            <hr />
            @Html.ValidationSummary(true, "", new { @class = "text-danger" })
            <div class="form-group">
                @Html.LabelFor(model => model.UserId, "UserId", htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.DropDownList("UserId", null, htmlAttributes: new { @class = "form-control" })
                    @Html.ValidationMessageFor(model => model.UserId, "", new { @class = "text-danger" })
                </div>
            </div>
    
            @foreach (var item in ViewBag.QuestionId)
            {
            <div class="form-group">
                @Html.LabelFor(model => model.QuestionId, "QuestionId", htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.HiddenFor(s=>s.QuestionId)
                    @Html.ValueFor(s =>item)
                </div>
            </div>
    
            <div class="form-group">
                @Html.LabelFor(model => model.Answer, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.EditorFor(model => model.Answer, new { htmlAttributes = new { @class = "form-control" } })
                    @Html.ValidationMessageFor(model => model.Answer, "", new { @class = "text-danger" })
                </div>
            </div>
    
            <div class="form-group">
                @Html.LabelFor(model => model.Comment, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.EditorFor(model => model.Comment, new { htmlAttributes = new { @class = "form-control" } })
                    @Html.ValidationMessageFor(model => model.Comment, "", new { @class = "text-danger" })
                </div>
            </div>
    
            }
    
            <div class="form-group">
                <div class="col-md-offset-2 col-md-10">
                    <input type="submit" value="Create" class="btn btn-default" />
                </div>
            </div>
        </div>
    }
    
    <div>
        @Html.ActionLink("Back to List", "Index")
    </div>
    
    @model TEST.Models.Survey
    @{
    ViewBag.Title=“创建”;
    }
    创造
    @使用(Html.BeginForm())
    {
    @Html.AntiForgeryToken()
    调查
    
    @Html.ValidationSummary(true,“,new{@class=“text danger”}) @LabelFor(model=>model.UserId,“UserId”,htmlAttributes:new{@class=“controllabel col-md-2”}) @DropDownList(“UserId”,null,htmlAttributes:new{@class=“formcontrol”}) @Html.ValidationMessageFor(model=>model.UserId,“,new{@class=“text danger”}) @foreach(ViewBag.QuestionId中的变量项) { @LabelFor(model=>model.QuestionId,“QuestionId”,htmlAttributes:new{@class=“controllabel col-md-2”}) @Html.HiddenFor(s=>s.QuestionId) @Html.ValueFor(s=>item) @LabelFor(model=>model.Answer,htmlAttributes:new{@class=“controllabel col-md-2”}) @EditorFor(model=>model.Answer,new{htmlAttributes=new{@class=“form control”}}) @Html.ValidationMessageFor(model=>model.Answer,“,new{@class=“text danger”}) @LabelFor(model=>model.Comment,htmlAttributes:new{@class=“controllabel col-md-2”}) @EditorFor(model=>model.Comment,new{htmlAttributes=new{@class=“form control”}) @Html.ValidationMessageFor(model=>model.Comment,“,new{@class=“text danger”}) } } @ActionLink(“返回列表”、“索引”)
    首先,我想确保我理解您的意图

    在创建操作中,您将从问题表中获取所有问题,并将它们作为问题ID添加到视图包中

    假设在调试代码时,当您尝试将标签打印到屏幕时,在Viewbag.QuestionId中看到正确的数据

    @Html.LabelFor(model => model.QuestionId, "QuestionId", htmlAttributes: new { @class = "control-label col-md-2" })
    
    您正在尝试打印QuestionId的对象。我认为您需要在标签中使用“item”,因为当代码在集合中迭代时,它会发生变化

    item.Question
    

    应该用在你想打印问题文本的地方

    问题是什么?问题是当我想创建时,它为每个问题创建字段数,但不显示问题,也不在此提交。我不明白你为什么在选择列表中传递问题和用户。实体框架生成了这个,在ado.net模型中,我是否应该更改其他内容?