Question

我一直试图在asp.net mvc4中运行级联下拉列表....现在我开始使用ajax.beginform ...稍后我可能会直接进入jquery ....

我的问题是第一个（跟踪）ajax.beginform被调用，它调用控制器，然后它指向第二个部分（轨道）...但是当SelectRailPartial.cshtml渲染时它会完全查看。 ..不是以div标签作为替代品的rendor ....我已经尝试了ajaxControls中的各种值来指定替换等等......它们似乎没有什么区别......

我怀疑我的问题可能出现在我所包含的javascripts中....我已经将它全部删回了一些，我知道我需要保持简单......有人能发现我做错了吗？请....

在我的（移动）控制器中，我有以下两种方法：

 //this is my main form that I am looking at...
    public ActionResult LoadRailVehicle()
    {
        LoadRailVehicleInputModel model = new LoadRailVehicleInputModel();
        IRailService railService = new RailService();
        model.TrackList = railService.GetActiveRailTracks().ToList();
        return View(model);
    }


    [HttpPost]
    public ActionResult SelectTrack(string selectedTrack)
    {
        LoadRailVehicleInputModel model = new LoadRailVehicleInputModel();
        //kludge for now...
        model.RailCarList.Add("aaaa");         
        return PartialView("xSelectRailPartial", model);
    }

我的LoadRailVehicle.cshtml

@using TBS.Etracs.Web.Main.Areas.Carrier.Models
@model LoadRailVehicleInputModel

@{
    ViewBag.Title = "Load Rail Vehicle";
}

<scripts>   
        <script src="@Url.Content("~/Scripts/jquery-1.9.1.js")"                    type="text/javascript"></script>
        <script src="@Url.Content("~/Scripts/jquery-1.9.1.min.js")"                type="text/javascript"></script>
        <script src="@Url.Content("~/Scripts/jquery-1.9.1.intellisense.js")"       type="text/javascript"></script>
        <script src="@Url.Content("~/Scripts/jquery-1.10.1.min.js")"               type="text/javascript"></script>
        <script src="@Url.Content("~/Scripts/jquery.validate.min.js")"             type="text/javascript"></script>
        <script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
</scripts>

<table border="0">
    <tr>
        <td>Track</td>
        <td> :   </td>
        <td><div id="trackdiv">@Html.Partial("xSelectTrackPartial", Model)</div></td>
    </tr>
    <tr>
        <td>Rail</td>
        <td> :  </td>
        <td><div id="Raildiv">@Html.Partial("xSelectRailPartial", Model)</div></td>
    </tr>
</table>

在xSelectTrackPartial.cshtml中：

@using TBS.Etracs.Web.Main.Areas.Carrier.Models
@model LoadRailVehicleInputModel

<scripts>
    <script src="@Url.Content("~/Scripts/jquery-1.10.1.min.js")"               type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/jquery.validate.min.js")"             type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
</scripts>

@using (Ajax.BeginForm("SelectTrack", "Mobile",
                    new AjaxOptions
                    {  UpdateTargetId   = "Raildiv" 
                                @* This is a control in theLoadRailVehicle.cshtml *@
                      }))
{
    @Html.DropDownListFor(p => p.SelectedTrack,
                          new SelectList(Model.TrackList),          
                          new { id       = "trackdropdown",
                                name     = "trackdropdown",
                                Class    = "dropdownstyle", 
                                style    = "width: 100px" , 
                                onchange = "this.form.submit();"})
}

xSelectRailPartial.cshtml中的

@using TBS.Etracs.Web.Main.Areas.Carrier.Models
@model LoadRailVehicleInputModel

<scripts>
    <script src="@Url.Content("~/Scripts/jquery-1.10.1.min.js")"               type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/jquery.validate.min.js")"             type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
</scripts>

@if (Model.RailCarList != null && Model.RailCarList.Count() > 0)
{
    @Html.DropDownListFor(p => p.SelectedRailCar,
                            new SelectList(Model.RailCarList),         
                            new { id       = "raildropdown",
                                  name     = "raildropdown",
                                  Class    = "dropdownstyle", 
                                  style    = "width: 100px" })
}

这是我的_layout.cshtml ，我通过_viewstart获取

<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8" />
        <title>@ViewBag.Title - Etracs</title>
        <link href="~/favicon.ico" rel="shortcut icon" type="image/x-icon" />
        <meta name="viewport" content="width=device-width" />
      @*  @Styles.Render("~/Content/css")        *@
      @*  @Scripts.Render("~/bundles/modernizr") *@
      @*  @Scripts.Render("~/bundles/jquery")    *@
        <script src="@Url.Content("~/Scripts/jquery-1.9.1.js")"                    type="text/javascript"></script>
        <script src="@Url.Content("~/Scripts/jquery-1.9.1.min.js")"                type="text/javascript"></script>
        <script src="@Url.Content("~/Scripts/jquery-1.9.1.intellisense.js")"       type="text/javascript"></script>
        <script src="@Url.Content("~/Scripts/jquery-1.10.1.min.js")"               type="text/javascript"></script>
        <script src="@Url.Content("~/Scripts/jquery.validate.min.js")"             type="text/javascript"></script>
        <script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
       @RenderSection("scripts", required: false) 
    </head>
    <body>

        <header>
            <div class="content-wrapper">
                <div class="float-right">
                    <section id="login">
                        @Html.Partial("_LoginPartial")
                    </section>
                </div>
            </div>      
        </header>

        <div id="body">         
            <section class="content-wrapper main-content clear-fix">
                @RenderBody()
            </section>
        </div>


        @Html.Partial("_ViewSwitcher")
        <footer>
            <div class="content-wrapper">
                <div class="float-left">
                    <p>&copy; @DateTime.Now.Year - Turning Basin Services</p>
                </div>
            </div>
        </footer>

    </body>
</html>

Answer 1

看到评论....我切换到直接jquery并且有很多问题（这就是为什么我首先尝试ajax.beginform）.....但过了一会儿我消除了所有的jquery中的问题和调用现在都有效....我可以在html.beginform中嵌入这个新代码的额外好处

我从未弄清楚ajax.beginform中的问题导致它在部分屏幕内部无法创建......

mvc ajax.beginform无法使用局部视图

1 个答案: