Question

我在表单视图中定义了以下隐藏的输入字段，

形式：

@model Mysite.Models.FileUpload
@using Mysite.Models
@{    
    var FileUploadData = ViewData["FileUploadData"] as FileUpload;    
}
@using (Html.BeginForm("LoadData",
                        "LoadAndAnalyzeData",
                        FormMethod.Post,
                        new { enctype = "multipart/form-data" }))
{
    <div class="div-root" id="serverslist">
        @Html.LabelFor(m => m.SelectedServer)
        @Html.DropDownListFor(m =>m.SelectedServer, FileUploadData.ServersList)
    </div>
    <div class="div-root">
        <label for="files">Choose File 1: </label>
        <input type="file" name="file1" id="file1" />
    </div>
       <div class="div-root">
         <input type="submit" id="upload" name ="FileUpload" value="Upload Files For Analysis" />         
    </div>
}
@using (Html.BeginForm("AnalyzeLoadedData", "LoadAndAnalyzeData"))
{
    <input type="hidden" name="servername" id="servername" value='@ViewBag.servername' />
    @ViewBag.servername
    <input type="submit" id="analysis" name ="AnalyzeLoadedData" value="Analyze Loaded Data" />
}

我有一个模型，我在下面定义了“servername”，

public string servername { get; set; }

当我单击提交时，函数AnalyzeLoadedData未按预期获取服务器名称。但该页面在页面上显示服务器名称作为@ViewBag.servername的一部分。

“servername当前上下文中不存在名称'servername'”

请指导我在这里缺少什么。

Answer 1

以下是如何使用您在MVC中创建的名为servername的属性并获取结果的示例。我不确定您是否在模型中定义了servername，或者您只是拥有随机属性。

您将servername作为属性的类可能如下所示：

    public class Server
    {
        public string servername { get; set; }
    }

您的控制器可能如下所示：

    public class LoadAndAnalyzeDataController : Controller
    {
        public ActionResult LoadAndAnalyzeData()
        {
            //It is not clear why you have called your action and controller
            //the same thing. Do you know what your action and controller are?

            //You could use a view bag like this if you really want but it
            //has nothing to do with the property you mentioned in your
            //question...

            ViewBag.servername = "......";

            //Or you could make an instance of the Server class and set your 
            //servername property to a value like this:

            Server myServer = new Server(){ servername = "...." };

            //After making an instance make sure to pass it as a parameter 
            //to your view like this:

            return View(myServer);
        }

        [HttpPost]
        public ActionResult LoadAndAnalyzeData(string servername)
        {
            //do something with servername
            return View();
        }
    }

最后你的观点看起来就像你发布的那样：

//Dont forget to refer to your model at the top of your page if you would
//like to use the data you pass through your controller.
@model Server

@using (Html.BeginForm("AnalyzeLoadedData", "LoadAndAnalyzeData"))
{
    <input type="hidden" name="servername" id="servername" value='@Model.servername' />

    //you can also use the ViewBag if you have populated it with data like 
    //you had:
    @ViewBag.servername

    //It is very wierd to give a value and name to your submit button like
    //you had it here:
    <input type="submit" id="analysis" name ="AnalyzeLoadedData" value="Analyze Loaded Data" />

    //But anyway if you put a break point in the [HttpPost] action in the
    //controller which you refer to in this begin form you will see your
    //value for 'servername' coming through as a parameter.

}

Answer 2

好的，您刚刚更新了帖子。您应该放弃使用ViewBag并使用剃须刀助手。改为：

@ Html.HiddenFor（x =＆gt; x.servername）

C＃MVC Razor - 控制器未被隐藏的输入值

2 个答案: