电商旅游网站策划书,网站 开发 合同,seo外链在线工具,网店运营的基本流程本实例是来源msdn的Metro开发文档#xff0c;按着解说一步步来理解的#xff0c;修改了一点点#xff0c;拿了博客园本人的博客作为RSS阅读#xff0c;本实例用来学习还是可以的 参考文档http://msdn.microsoft.com/zh-cn/library/windows/apps/br211380.aspx#Y909 先看允…本实例是来源msdn的Metro开发文档按着解说一步步来理解的修改了一点点拿了博客园本人的博客作为RSS阅读本实例用来学习还是可以的 参考文档http://msdn.microsoft.com/zh-cn/library/windows/apps/br211380.aspx#Y909 先看允许结果 本例子主要有2个类文件和2个xaml文件 第一个类文件FeedData.cs using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Collections.ObjectModel;using System.Threading.Tasks;using Windows.Web.Syndication;using Windows.Globalization.DateTimeFormatting;namespace sl{// FeedData// Holds info for a single blog feed, including a list of blog posts (FeedItem)public class FeedData {public string Title { get; set; }public string Description { get; set; }public DateTime PubDate { get; set; }private ListFeedItem _Items new ListFeedItem();public ListFeedItem Items {get {return this._Items; } } }// FeedItem// Holds info for a single blog postpublic class FeedItem {public string Title { get; set; }public string Author { get; set; }public string Content { get; set; }public DateTime PubDate { get; set; }public Uri Link { get; set; } }// FeedDataSource// Holds a collection of blog feeds (FeedData), and contains methods needed to// retreive the feeds.public class FeedDataSource {private ObservableCollectionFeedData _Feeds new ObservableCollectionFeedData();public ObservableCollectionFeedData Feeds {get {return this._Feeds; } }public async Task GetFeedsAsync() { TaskFeedData feed1 GetFeedAsync( http://feed.cnblogs.com/blog/u/109818/rss);this.Feeds.Add(await feed1); }private async TaskFeedData GetFeedAsync(string feedUriString) {// using Windows.Web.Syndication; SyndicationClient client new SyndicationClient(); Uri feedUri new Uri(feedUriString);try { SyndicationFeed feed await client.RetrieveFeedAsync(feedUri);// This code is executed after RetrieveFeedAsync returns the SyndicationFeed.// Process it and copy the data we want into our FeedData and FeedItem classes. FeedData feedData new FeedData(); feedData.Title feed.Title.Text;if (feed.Subtitle.Text ! null) { feedData.Description feed.Subtitle.Text; }// Use the date of the latest post as the last updated date. feedData.PubDate feed.Items[0].PublishedDate.DateTime;foreach (SyndicationItem item in feed.Items) { FeedItem feedItem new FeedItem(); feedItem.Title item.Title.Text; feedItem.PubDate item.PublishedDate.DateTime; feedItem.Author item.Authors[0].Name.ToString();// Handle the differences between RSS and Atom feeds.if (feed.SourceFormat SyndicationFormat.Atom10) { feedItem.Content item.Content.Text; feedItem.Link new Uri(http://www.cnblogs.com item.Id); }else if (feed.SourceFormat SyndicationFormat.Rss20) { feedItem.Content item.Summary.Text; feedItem.Link item.Links[0].Uri; } feedData.Items.Add(feedItem); }return feedData; }catch (Exception) {return null; } } }} 第2个类文件DateConverter.cs 主要负责数据的转换 using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Collections.ObjectModel;using System.Threading.Tasks;using Windows.Web.Syndication;using Windows.Globalization.DateTimeFormatting;namespace sl{public class DateConverter : Windows.UI.Xaml.Data.IValueConverter {public object Convert(object value, Type targetType, object parameter, string culture) {if (value null)throw new ArgumentNullException(value, Value cannot be null.);if (!typeof(DateTime).Equals(value.GetType()))throw new ArgumentException(Value must be of type DateTime., value); DateTime dt (DateTime)value;if (parameter null) {// Date 7/27/2011 9:30:59 AM returns 7/27/2011return DateTimeFormatter.ShortDate.Format(dt); }else if ((string)parameter day) {// Date 7/27/2011 9:30:59 AM returns 27 DateTimeFormatter dateFormatter new DateTimeFormatter({day.integer(2)});return dateFormatter.Format(dt); }else if ((string)parameter month) {// Date 7/27/2011 9:30:59 AM returns JUL DateTimeFormatter dateFormatter new DateTimeFormatter({month.abbreviated(3)});return dateFormatter.Format(dt).ToUpper(); }else if ((string)parameter year) {// Date 7/27/2011 9:30:59 AM returns 2011 DateTimeFormatter dateFormatter new DateTimeFormatter({year.full});return dateFormatter.Format(dt); }else {// Requested format is unknown. Return in the original format.return dt.ToString(); } }public object ConvertBack(object value, Type targetType, object parameter, string culture) {string strValue value as string; DateTime resultDateTime;if (DateTime.TryParse(strValue, out resultDateTime)) {return resultDateTime; }return Windows.UI.Xaml.DependencyProperty.UnsetValue; } }} 第一个界面文件BlankPage.xaml文件包括两段代码xaml代码Pagex:Classsl.BlankPage xmlnshttp://schemas.microsoft.com/winfx/2006/xaml/presentation xmlns:xhttp://schemas.microsoft.com/winfx/2006/xaml xmlns:localusing:sl xmlns:dhttp://schemas.microsoft.com/expression/blend/2008 xmlns:mchttp://schemas.openxmlformats.org/markup-compatibility/2006 mc:IgnorabledGrid Background{StaticResource ApplicationPageBackgroundBrush}Grid.RowDefinitionsRowDefinition Height140 /RowDefinition Height* //Grid.RowDefinitions!-- Title --TextBlock x:NameTitleText Text{Binding Title} VerticalAlignmentCenter FontSize48 Margin56,0,0,0/!-- Content --Grid Grid.Row1Grid.ColumnDefinitionsColumnDefinition Width2* MinWidth320 /ColumnDefinition Width3* //Grid.ColumnDefinitions!-- Left column --!-- The default value of Grid.Column is 0, so we do not need to set it to make the ListView show up in the first column. --ListView x:NameItemListView ItemsSource{Binding Items} Margin60,0,0,10 SelectionChangedItemListView_SelectionChangedListView.ItemTemplateDataTemplateStackPanelTextBlock Text{Binding Title} FontSize24 Margin5,0,0,0 TextWrappingWrap /TextBlock Text{Binding Author} FontSize16 Margin15,0,0,0/TextBlock Text{Binding PathPubDate, Converter{StaticResource dateConverter}} FontSize16 Margin15,0,0,0//StackPanel/DataTemplate/ListView.ItemTemplate/ListView!-- Right column --!-- We use a Grid here instead of a StackPanel so that the WebView sizes correctly. --Grid DataContext{Binding ElementNameItemListView, PathSelectedItem} Grid.Column1 Margin25,0,0,0Grid.RowDefinitionsRowDefinition HeightAuto /RowDefinition Height* //Grid.RowDefinitionsTextBlock x:NamePostTitleText Text{Binding Title} FontSize24/WebView x:NameContentView Grid.Row1 Margin0,5,20,20//Grid/Grid/Grid/Page C#代码 using System;using System.Collections.Generic;using System.IO;using System.Linq;using Windows.Foundation;using Windows.Foundation.Collections;using Windows.UI.Xaml;using Windows.UI.Xaml.Controls;using Windows.UI.Xaml.Controls.Primitives;using Windows.UI.Xaml.Data;using Windows.UI.Xaml.Input;using Windows.UI.Xaml.Media;using Windows.UI.Xaml.Navigation;using System.Collections.ObjectModel;using System.Threading.Tasks;using Windows.Web.Syndication;using Windows.Globalization.DateTimeFormatting;// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId234238namespace sl{/// summary/// An empty page that can be used on its own or navigated to within a Frame./// /summarypublic sealed partial class BlankPage : Page {public BlankPage() {this.InitializeComponent(); }/// summary/// Invoked when this page is about to be displayed in a Frame./// /summary/// param nameeEvent data that describes how this page was reached. The Parameter/// property is typically used to configure the page./paramprotected override async void OnNavigatedTo(NavigationEventArgs e) { FeedDataSource _feedDataSource App.DataSource;if (_feedDataSource.Feeds.Count 0) { await _feedDataSource.GetFeedsAsync(); }this.DataContext (_feedDataSource.Feeds).First(); }private void ItemListView_SelectionChanged(object sender, SelectionChangedEventArgs e) { FeedItem feedItem e.AddedItems[0] as FeedItem;if (feedItem ! null) {// Navigate the WebView to the blog post content HTML string. ContentView.NavigateToString(feedItem.Content); } } }} 第4个文件是App.xaml包括2段代码 xaml代码 Applicationx:Classsl.App xmlnshttp://schemas.microsoft.com/winfx/2006/xaml/presentation xmlns:xhttp://schemas.microsoft.com/winfx/2006/xaml xmlns:localusing:slApplication.ResourcesResourceDictionaryResourceDictionary.MergedDictionariesResourceDictionarylocal:FeedDataSource x:KeyfeedDataSource/!-- Add the DateConverter here. --local:DateConverter x:KeydateConverter //ResourceDictionary/ResourceDictionary.MergedDictionaries/ResourceDictionary/Application.Resources/Application C#代码 using System;using System.Collections.Generic;using System.IO;using System.Linq;using Windows.ApplicationModel;using Windows.ApplicationModel.Activation;using Windows.Foundation;using Windows.Foundation.Collections;using Windows.UI.Xaml;using Windows.UI.Xaml.Controls;using Windows.UI.Xaml.Controls.Primitives;using Windows.UI.Xaml.Data;using Windows.UI.Xaml.Input;using Windows.UI.Xaml.Media;using Windows.UI.Xaml.Navigation;using System.Collections.ObjectModel;using System.Threading.Tasks;using Windows.Web.Syndication;using Windows.Globalization.DateTimeFormatting;// The Blank Application template is documented at http://go.microsoft.com/fwlink/?LinkId234227namespace sl{/// summary/// Provides application-specific behavior to supplement the default Application class./// /summarysealed partial class App : Application {/// summary/// Initializes the singleton application object. This is the first line of authored code/// executed, and as such is the logical equivalent of main() or WinMain()./// /summarypublic static FeedDataSource DataSource;public App() {this.InitializeComponent(); DataSource new FeedDataSource(); }/// summary/// Invoked when the application is launched normally by the end user. Other entry points/// will be used when the application is launched to open a specific file, to display/// search results, and so forth./// /summary/// param nameargsDetails about the launch request and process./paramprotected override void OnLaunched(LaunchActivatedEventArgs args) {if (args.PreviousExecutionState ApplicationExecutionState.Terminated) {//TODO: Load state from previously suspended application }// Create a Frame to act navigation context and navigate to the first pagevar rootFrame new Frame(); rootFrame.Navigate(typeof(BlankPage));// Place the frame in the current Window and ensure that it is active Window.Current.Content rootFrame; Window.Current.Activate(); }/// summary/// Invoked when application execution is being suspended. Application state is saved/// without knowing whether the application will be terminated or resumed with the contents/// of memory still intact./// /summary/// param namesenderThe source of the suspend request./param/// param nameeDetails about the suspend request./paramvoid OnSuspending(object sender, SuspendingEventArgs e) {//TODO: Save application state and stop any background activity } }} 源于参考文档http://msdn.microsoft.com/zh-cn/library/windows/apps/br211380.aspx#Y909转载于:https://www.cnblogs.com/suguoqiang/archive/2012/03/07/2384394.html
