C# Mvc Id不'；我不能提交

我有一个下拉列表，如下所示，试图将我的id传递给控制器，但总是显示为0

 <div class="form-group">
        @Html.LabelFor(model => model.SagsTypersId, "SagsTypeId1", htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.DropDownList("SagsTypeId1", null, htmlAttributes: new {
           @class = "selectpicker",
           data_show_subtext = "true",
           data_live_search = "true"
       })
            @Html.ValidationMessageFor(model => model.SagsTypersId, "", new { @class = "text-danger" })
        </div>
    </div>

这是控制站

 public ActionResult Create(Sag sag)
    {

        if (ModelState.IsValid)
        {
            db.Sags.Add(sag);
            db.SaveChanges();
            return RedirectToAction("Index");
        }


        return View(sag);
    }

总而言之，我的问题是Sags.SagsTypersId在尝试提交时为0。似乎找不到错误

致意

---

约翰尼。

您没有将下拉列表附加到模型，请使用

@Html.DropDownListFor

而不是

@Html.DropDownList

SagsTyperList所在的位置包含SagsTyperId和SagsTyperName

@Html.DropDownListFor(model => model.SagsTypersId, 
          new SelectList(SagsTypersList, "SagsTypersID", "SagsTyperName"), htmlAttributes: new {
           @class = "selectpicker",
           data_show_subtext = "true",
           data_live_search = "true"
       })

改变

  @Html.DropDownList("SagsTypeId1", null, htmlAttributes: new {
           @class = "selectpicker",
           data_show_subtext = "true",
           data_live_search = "true"
       })

到

或 只需使用强类型html帮助器：

@Html.DropDownListFor(model => model.SagsTypersId, 
          new SelectList(SagsTypersList, "SagsTypersID", "SagsTyperName"), htmlAttributes: new {
           @class = "selectpicker",
           data_show_subtext = "true",
           data_live_search = "true"
       })

---

sagstyperid

不等于

SagsTypeId1

！（使用强类型的

DropDownListFor（）

方法-

@Html.DropDownListFor（m=>m.sagstyperid，（IEnumerable）@ViewBag.SagsTypeId1）

oka我会试试。然后摆脱你的

ViewBag

并使用视图模型正确地完成它（请参考），谢谢我最终像这样解决了它：@Html.DropDownListFor（model=>model.sagstyperid，（IEnumerable）@ViewBag.SagsTypeId1，htmlAttributes:new{@class=“selectpicker”，data\u show\u subtext=“true”，data\u live\u search=“true”}）

  @Html.DropDownList("SagsTypeId", null, htmlAttributes: new {
           @class = "selectpicker",
           data_show_subtext = "true",
           data_live_search = "true"
       })

@Html.DropDownListFor(model => model.SagsTypersId, 
          new SelectList(SagsTypersList, "SagsTypersID", "SagsTyperName"), htmlAttributes: new {
           @class = "selectpicker",
           data_show_subtext = "true",
           data_live_search = "true"
       })