将模型发送到控制器动作以导出为CSV

Question

I have a large set of data that my users can filter by various options. I'd like to export this set of data as a CSV, but not sure how to send the item to my controller action.

The following code in my index.cshtml file:

@model Project.ViewModels.PeopleIndexViewModel
<a href="@Url.Action("Export", "Person", new { List = Model.People.ToList()})" title="Export to CSV">
    <img src="/content/images/excel.gif" />
</a>

Turns out to be empty when I hit the controller:

public ActionResult Export(List<Person> List)
{
    // List is empty here...
}

What am I doing wrong?

Answer 1

In my opinion it won't work that way. I would suggest keeping the List in Session or TempData like that:

Session["PeopleList"] = list;

or

TempData["PeopleList"] = list;

This way you might access it between requests. Remember - storage in Session is for Session duration. Storage in TempData is only till the next request unless you use Keep method.