vs2010 学习Silverlight学习笔记(16)：RssRead

概要：

       Sl已经学习有一段时间了，但总是怀疑已学的东西到底能不能做出一些东西。今天照着例子动手写一下，验证一下。

内容：

       首先还是xaml的布局。都是一些控件的使用，但是让我来做肯定丑的自己都看不下去。以前最头疼的就是做页面，是没这方面细胞，还是根本就没好好练过？

MainPage.xaml:

   xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

   xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

   xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

   xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

   mc:Ignorable="d"

   d:DesignHeight="500" d:DesignWidth="800">

 

   

       

           

           

           

       

       

           

           

       

       

   Grid.Row="0" Grid.Column="0"Grid.ColumnSpan="2">

           

           

               

                          VerticalAlignment="Center" Margin="12 0 00">

           

 

           

                     FontSize="16"Margin="10 0 10 0">

 

           

                    Content="显 示" Click="displayButton_Click">

           

                    Content="全 屏" Click="fullScreenButton_Click">

       

       

           

       

       

                 Margin="10 5 5 10"SelectionChanged="PostsList_SelectionChanged">

           

               

                   

                                  TextWrapping="Wrap" Width="200"/>

               

           

       

       

           

                    Width="540"Height="40">

               

                          VerticalAlignment="Center" Foreground="Red"/>

           

           

                    Width="540"Height="300">

               

           

           

                    Width="540"Height="40">

               

                   

                              Foreground="Red" VerticalAlignment="Center"/>

                   

                              Foreground="Red" VerticalAlignment="Center"/>

               

           

       

   

 

样式部分代码，AppPage.xaml:

            xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

            x:Class="SLDemo18RssRead.App"

            >

   

       

       

       

   

 

 

代码：

///

       /// 显示列表

       ///

       ///

       ///

       private void displayButton_Click(object sender, RoutedEventArgs e)

       {

           Uri uri = new Uri(feedAddress.Text);

           WebRequest request = (WebRequest)WebRequest.Create(uri);

           request.BeginGetResponse(new AsyncCallback(responseReady), request);

       }

 

       void responseReady(IAsyncResult asyncResult)

       {

           WebRequest request = (WebRequest)asyncResult.AsyncState;

           WebResponse response = (WebResponse)request.EndGetResponse(asyncResult);

 

           XmlReader reader = XmlReader.Create(response.GetResponseStream());

           SyndicationFeed feed = SyndicationFeed.Load(reader);

 

           PostsList.ItemsSource = feed.Items;

       }

 

       ///

       /// 全屏显示

       ///

       ///

       ///

       private void fullScreenButton_Click(object sender, RoutedEventArgs e)

       {

           Content contentObject = Application.Current.Host.Content;

           contentObject.IsFullScreen = !contentObject.IsFullScreen;

       }

 

       ///

       /// 查看详细信息

        ///

       ///

       ///

       private void PostsList_SelectionChanged(object sender,SelectionChangedEventArgs e)

       {

           SyndicationItem item = PostsList.SelectedItem as SyndicationItem;

 

           Detail.DataContext = item;

       }

 

 

注：

代码所需的引用：

       System.Xml.LinQ;

System.ServiceModel;

       System.ServiceModel.Syndication;

引入的命名空间总共有：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Net;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Animation;

using System.Windows.Shapes;

using System.Xml;

using System.Xml.Linq;

using System.Windows.Interop;

using System.ServiceModel.Syndication;

 

 

 

总结：

       做这个例子可能遇到的困难首先是引入命名空间问题，在什么情况下需要引入什么命名空间，这个我只是照着例子试试看。我想这个也没什么取巧的方法，只能靠积累，总结。

还有一个可能只是对我来说是个困难，就是如何才能有一个漂亮的布局?以前做web我主要做逻辑，实体等部分，页面部分有别的人来做的。但这个SL主要还是用来显示的，所以我总觉得SL在我手上是被糟蹋的感觉。。。

转载于:https://www.cnblogs.com/yaoge/archive/2010/09/09/1822606.html