部分视图中的下拉菜单更改触发了ChildAction [英] ChildAction triggered on dropdown change in partial view

问题描述

我想在下拉菜单的onchange事件上在本地控制器上触发ChildAction.下拉菜单位于_Layout.cshtml.

是否可以在javascript上实现?

这是我目前的代码.

$('#langDropdown').change(function() {
    var lang = $(this).val();
    alert(lang);
});

这是我的下拉菜单:

@Html.DropDownList("Language", ViewData["Languages"] as SelectList, 
         new { id = language })

它不是任何形式的内容.任何建议我该怎么做.谢谢！

注意:我只是将警报用于测试目的.

解决方案

您应将下拉列表放在一种形式，该形式将POST请求提交到单独的操作(此操作可以与子操作具有相同的名称).

如我在上一个答案中所述，POST操作将希望重定向回原始URL.评论).

I want to trigger a ChildAction on the Home Controller on the onchange event of a dropdown. The dropdown is located at the _Layout.cshtml.

Is it possible to do it on javascript?

Here is my code as of the moment.

$('#langDropdown').change(function() {
    var lang = $(this).val();
    alert(lang);
});

And here is my dropdown:

@Html.DropDownList("Language", ViewData["Languages"] as SelectList, 
         new { id = language })

It not inside of any form. Any suggestion how can I do it. Thanks!

Note: I just use alert for testing purposes.

解决方案

You should put your dropdown in a form that submits a POST request to a separate action (this action can have the same name as the child action).

The POST action would want to redirect back to the original URL, as I explained in my previous answer (see also comments).

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