如何在MVC3 DropDownList中获取选定值 [英] How to fetch selected value from a dropdownlist in MVC3

问题描述

这听起来可能很简单，但我在一个非常奇怪的问题卡住了。

This may sound simple but i am stuck up at a very strange problem.

我已经创建了我的应用程序下拉菜单的，我不能够获取所选值上编辑。

I have created dropdown's in my application and i am not able to fetch the selected value On Edit.

下面是我的看法：

<div class="editor-field">
      @Html.DropDownListFor(model => model.Hobbyhome.HobbyHomeAddressList.First().ProvincialState.ProvincialStateID, new SelectList(ViewBag.State, "ProvincialStateID", "ProvincialStateName"), "-----Select State-----", new { @id = "State" })<font color="red">*</font> 
      </div>

我已经写在控制器的函数来获取价值，我还能够获取价值，但是当它在查看它亘古不变的显示我的价值结果
我已经创造了另一个下拉列表如下：结果

i have written a function in controller to fetch the value and i am also able to fetch the value but when it goes in View it doesnot show me the value
i have created another dropdown like this:

  @Html.DropDownListFor(model => model.Hobbydetail.Hobbymaster.HobbyId, new SelectList(ViewBag.Hobby, "HobbyId", "HobbyName"), "----Select Hobby----", new { @id = "Hobby" })<font color="red">*</font> 

和奇怪的是，我可以看到第二个下拉为第壹的价值，​​但不
结果
我想也许是因为我在第一个下拉使用 list.First（）并因此isgiving bcoz在编辑视图页这个问题，只能说明我-----选择述明─ - 作为第一个下拉列表值。
请帮我

And the strange thing is i can see the value of the second dropdown but not for first One
What i think is maybe because i am using an list.First() in the first dropdown and so it isgiving this problem bcoz On edit view page it only shows me "-----Select State--" as value for first dropdown.
Please Help me

推荐答案

要取得选择的值对象，在你编辑观点：

To get the "selected value object" in you edit view :

@Html.DropDownListFor(model => model.Hobbydetail.Hobbymaster.HobbyId, 
    new SelectList(ViewBag.Hobby, "HobbyId", "HobbyName", Model.Hobbydetail.Hobbymaster.HobbyId),
    "----Select Hobby----", new { @id = "Hobby" })

要在你的下拉列表中所有的元素，请确保您的ViewBag.Hobby正显示出编辑视图之前初始化并填写您的控制器！

To have all elements in your DropDown, be sure that your ViewBag.Hobby is initialized and filled in your controller before showing Edit view!

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