路径访问的几种方式和分页效果
显示其它类别的效果和多数据分页效果
默认访问网站路径效果和多数据分页效果
URL路径访问可页面
http://localhost:5339/stationery
http://localhost:5339/stationery/Page2
http://localhost:5339/?category=fashion
http://localhost:5339/?category=stationery
主要还是看代码和书,写出来的代码
主要使用这个路径显示和分页的效果
主要还是根据类别生成菜单显示的方法比较实用，请关注下面代码
关注路由配置
测试数据和数据库表
添加ProductsListViewModel.cs 编写如下代码
namespace Toad.WebUI.Models{ public class ProductsListViewModel { public IEnumerable Products { get; set; } public PagingInfo PagingInfo { get; set; } public string CurrentCategory { get; set; } }}
ProductController代码
namespace Toad.WebUI.Controllers{ public class ProductController : Controller { private IProductRepository repository; public int PageSize = 4; public ProductController(IProductRepository productRepository) { this.repository = productRepository; } public ViewResult List(string category, int page = 1) { ProductsListViewModel viewModel = new ProductsListViewModel { Products = repository.Products .Where(p => category == null || p.Category == category) .OrderBy(p => p.ProductID) .Skip((page - 1) * PageSize) .Take(PageSize), PagingInfo = new PagingInfo { CurrentPage = page, ItemsPerPage = PageSize, TotalItems = category == null ? repository.Products.Count() : repository.Products.Where(e => e.Category == category).Count() }, CurrentCategory = category }; return View(viewModel); } //// //// GET: /Product/ //public ActionResult List() //{ // return View(repository.Products); //} }}
路由配置代码
namespace Toad.WebUI{ public class RouteConfig { public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.MapRoute(null, "", new { controller = "Product", action = "List", category = UrlParameter.Optional, page = UrlParameter.Optional } ); routes.MapRoute(null, "Page{page}", new { controller = "Product", action = "List", category = (string)null }, new { page = @"\d+" } ); routes.MapRoute(null, "{category}", new { controller = "Product", action = "List", page = 1 } ); routes.MapRoute(null, "{category}/Page{page}", new { controller = "Product", action = "List" }, new { page = @"\d+" } ); routes.MapRoute(null, "{controller}/{action}"); //routes.MapRoute( // name: "Default", // url: "{controller}/{action}/{id}", // defaults: new { controller = "Product", action = "List", id = UrlParameter.Optional } //); } }} HtmlHelpers/PagingHelpers.cs分页代码
namespace Toad.WebUI.HtmlHelpers{ public static class PagingHelpers { public static MvcHtmlString PageLinks(this HtmlHelper html, PagingInfo pagingInfo, Func pageUrl) { StringBuilder result = new StringBuilder(); for (int i = 1; i <= pagingInfo.TotalPages; i++) { TagBuilder tag = new TagBuilder("a"); tag.MergeAttribute("href", pageUrl(i)); tag.InnerHtml = i.ToString(); if (i == pagingInfo.CurrentPage) { tag.AddCssClass("selected"); tag.AddCssClass("btn-primary"); } tag.AddCssClass("btn btn-default"); result.Append(tag.ToString()); } return MvcHtmlString.Create(result.ToString()); } }} Models\PagingInfo.cs代码
namespace Toad.WebUI.Models{ public class PagingInfo { public int TotalItems { get; set; } public int ItemsPerPage { get; set; } public int CurrentPage { get; set; } public int TotalPages { get { return (int)Math.Ceiling((decimal)TotalItems / ItemsPerPage); } } }} NavController.cs代码
namespace Toad.WebUI.Controllers{ public class NavController : Controller { private IProductRepository repository; public NavController(IProductRepository repo) { repository = repo; } public PartialViewResult Menu(string category = null) { ViewBag.SelectedCategory = category; IEnumerable categories = repository.Products .Select(x => x.Category) .Distinct() .OrderBy(x => x); return PartialView(categories); } }} 视图部分Shared
Menu.cshtml
@model IEnumerable@Html.ActionLink("Home", "List", "Product", null, new { @class = "btn btn-block btn-default btn-lg" })@foreach (var link in Model){ @Html.RouteLink(link, new{ controller = "Product", action = "List", category = link, page = 1}, new{ @class = "btn btn-block btn-default btn-lg" + (link == ViewBag.SelectedCategory ? " btn-primary" : "")})}
Product视图部分
List.cshtml
@using Toad.WebUI.HtmlHelpers@model Toad.WebUI.Models.ProductsListViewModel@{ ViewBag.Title = "Products"; Layout = "~/Views/Shared/_Layout.cshtml";}@foreach (var p in Model.Products){ @Html.Partial("ProductSummary", p)} @Html.PageLinks(Model.PagingInfo, x => Url.Action("List", new { page = x, category = Model.CurrentCategory }))
视图部分Shared
ProductSummary.cshtml
@model Toad.Domain.EFDB.Products@Model.Name @Model.Price.ToString("c")
@using (Html.BeginForm("AddToCart", "Cart")) {@Html.HiddenFor(x => x.ProductID) @Html.Hidden("returnUrl", Request.Url.PathAndQuery)} @Model.Description
_Layout.cshtml
@ViewBag.Title @Html.Action("Menu", "Nav")@RenderBody()
代码下载链接: http://pan.baidu.com/s/1eQgjZnO 密码: vdnr
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