在MVC下拉列表中选择调用特定的动作 [英] Invoking particular action on dropdown list selection in MVC

问题描述

我有一个MVC视图的下拉列表。在下拉列表中选择变化我想打电话给控制器的具体操作方法。

I have a dropdown list in an MVC view. On selection change of dropdown list I want to call specific action method in the controller.

我已经在做的看法是这样的：

What I have done on view is this :

<%=Html.DropDownList("ddl", ViewData["AvailableList"] as SelectList,
  new { onchange = "this.form.action='MyMethod';this.form.submit();" })%>

一切都得到编译。但是，当我改变下拉选项运行时异常被抛出，因为

Everything is getting compiled. But a runtime exception is thrown when I change the drop down selection, as

Microsift JScript运行时错误：对象不支持属性或方法

"Microsift JScript Runtime Error : Object doesn't support property or method"

如何重定向到列表选择更改事件的具体行动？结果
我如何可以传递参数给这个动作的方法？

How can I redirect to specific action on list selection change event?
How can I pass parameters to this action method?

推荐答案

您的方法应该工作。您遇到的问题是你的这个在的onchange 事件无效使用。试着像这样的东西更换您的 this.form 引用：

Your approach should work. The issue you're encountering is your use of this in your onchange event is invalid. Try replacing your this.form references with something like this:

<%= Html.DropDownList(
        "ddl", ViewData["AvailableList"] as SelectList, 
        new { onchange = @"
            var form = document.forms[0]; 
            form.action='MyMethod';
            form.submit();" 
        } ) %>

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