从ActionLink将参数传递给Action Method [英] Passing parameters to Action Method from ActionLink

问题描述

嗨
我想将下拉值传递给ActionLink的动作方法，但是在调试第二个参数时，第一个参数是空的。

查看我的代码。

Hi I want to pass dropdown values to action method from ActionLink but while debugging second parameter coming properly but first one is null.
Have a look at my code.

@Html.DropDownListFor(x => x.SelectedField, new SelectList(Model.Filter, "Id", "Name", Model.SelectedField),new { @class = "select1", style = "width:120px;" } )

@Html.DropDownListFor(x => x.SelectedYear, new SelectList(Model.ReportYears, "ID", "Name", Model.SelectedYear), new { @class = "select1", style = "width:120px;" })

action link =>

action link =>

@Html.ActionLink("Export to PDF", "DownloadRevenuePdfFile", "EmailReport", new { month = Model.SelectedField, year = Model.SelectedYear }, new { @class = "black" })

控制器

controller

public void DownloadRevenuePdfFile(string month, string year)

谢谢

thanks

推荐答案

您的链接是在编译时在服务器上计算的。因此，您的页面需要在进行选择时回发，以更新任何链接。因此，我将取消操作链接，而是使用您调用的方法，根据当前值计算链接并执行重定向。

Your link is calculated at compile time on the server. As such, your page needs to post back when a selection is made, to update any link. So I'd do away with the action link and instead have a method you call, which calculates the links and does a redirect, based on the current values.

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