如何在 ASP.NET MVC 中进行分页? [英] How do I do pagination in ASP.NET MVC?

问题描述

在 ASP.NET MVC 中进行分页的最首选和最简单的方法是什么?IE.将列表分解为多个可浏览页面的最简单方法是什么?

What is the most preferred and easiest way to do pagination in ASP.NET MVC? I.e. what is the easiest way to break up a list into several browsable pages.

举个例子，假设我从数据库/网关/存储库中获取元素列表，如下所示:

As an example lets say I get a list of elements from a database/gateway/repository like this:

public ActionResult ListMyItems()
{
    List<Item> list = ItemDB.GetListOfItems();
    ViewData["ItemList"] = list;

    return View();
}

为简单起见，我只想为我的操作指定一个页码作为参数.像这样:

For simplicity's sake I'd like to specify just a page number for my action as parameter. Like this:

public ActionResult ListMyItems(int page)
{
   //...
}

推荐答案

那么，数据源是什么?您的操作可能需要一些默认参数，即

Well, what is the data source? Your action could take a few defaulted arguments, i.e.

ActionResult Search(string query, int startIndex, int pageSize) {...}

在路由设置中默认设置为 startIndex 为 0，pageSize 为(例如)20:

defaulted in the routes setup so that startIndex is 0 and pageSize is (say) 20:

        routes.MapRoute("Search", "Search/{query}/{startIndex}",
                        new
                        {
                            controller = "Home", action = "Search",
                            startIndex = 0, pageSize = 20
                        });

要拆分提要，您可以很容易地使用 LINQ:

To split the feed, you can use LINQ quite easily:

var page = source.Skip(startIndex).Take(pageSize);

(或者如果你使用pageNumber"而不是startIndex"进行乘法)

(or do a multiplication if you use "pageNumber" rather than "startIndex")

使用 LINQ-toSQL、EF 等 - 这也应该组合"到数据库中.

With LINQ-toSQL, EF, etc - this should "compose" down to the database, too.

然后您应该能够使用操作链接到下一页(等):

You should then be able to use action-links to the next page (etc):

<%=Html.ActionLink("next page", "Search", new {
                query, startIndex = startIndex + pageSize, pageSize }) %>

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