Windows Phone 7 网络编程之WebBrowser控件的使用

     WebBrowser 控件可以在应用程序中承载网页以及支持浏览器的其他文档。例如,可以使用 WebBrowser 控件在应用程序中提供基于 HTML 的集成用户帮助或 Web 浏览功能。

     WebBrowser控件可以让你的用户浏览一个特定的网页。但它不是一个完整的浏览器,因为它没有地址栏,收藏夹 ,选项卡等等。你可以把它当做HTML中的iframe,但它提供了更丰富的界面。你可以通过两个手指收缩(和双击)来进行缩放,平移和滚动是自动内置的,你无须自己实现。

  这个控件另一个很棒的特性是它可以加载本地和网络中的内容。这意味着如果我有很多HTML文件(也许是文档),那么我不需要为我的应用程序去重新创建这些内容。相反,我可以将这些HTML页面嵌入到我的应用程序中,并在本地(电话中)加载他们而不是依靠一个可能会出现问题的数据连接。

WebBrowser 控件可提供下列功能:

导航SourceNavigateNavigateToStreamNavigateToStringRefresh

导航生存期NavigatingNavigatedLoadCompleted

导航日记CanGoBackGoBackCanGoForwardGoForward

WPF/HTML 互操作InvokeScriptObjectForScriptingDocument

 

下面的例子WebBrowser控件的简单使用,以及将WebBrowser控件打开的页面保存到手机本地

 

 

<phone:PhoneApplicationPage
x:Class="WindowsPhoneApplication1.MainPage"
xmlns
="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x
="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:phone
="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
xmlns:shell
="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
xmlns:browser
="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
xmlns:d
="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc
="http://schemas.openxmlformats.org/markup-compatibility/2006"
FontFamily
="{StaticResource PhoneFontFamilyNormal}"
FontSize
="{StaticResource PhoneFontSizeNormal}"
Foreground
="{StaticResource PhoneForegroundBrush}"
SupportedOrientations
="Portrait" Orientation="Portrait"
mc:Ignorable
="d" d:DesignWidth="480" d:DesignHeight="768"
shell:SystemTray.IsVisible
="True">
<Grid x:Name="LayoutRoot" Background="Transparent">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid x:Name="TitleGrid" Grid.Row="0">
<TextBlock Text="Browser控件测试" x:Name="textBlockPageTitle" Style="{StaticResource PhoneTextNormalStyle}"/>
</Grid>
<Grid x:Name="ContentGrid" Grid.Row="1">
<browser:WebBrowser Margin="-6,6,12,332" Name="webBrowser1" HorizontalContentAlignment="Left" />
<TextBox Height="90" HorizontalAlignment="Left" Margin="0,427,0,0" Name="textBox1" Text="" VerticalAlignment="Top" Width="319" />
<Button Content="打开网页" Height="70" HorizontalAlignment="Right" Margin="0,427,6,0" Name="button1" VerticalAlignment="Top" Width="160" Click="button1_Click"/>
<Button Content="把网页保存到本地" Height="72" HorizontalAlignment="Left" Margin="12,503,0,0" Name="btnSave" VerticalAlignment="Top" Width="456" Click="btnSave_Click" />
<Button Content="加载本地保存的页面" Height="72" HorizontalAlignment="Left" Margin="12,581,0,0" Name="btnLoad" VerticalAlignment="Top" Width="456" Click="btnLoad_Click" />
</Grid>
</Grid>

</phone:PhoneApplicationPage>
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 Microsoft.Phone.Controls;
using System.IO.IsolatedStorage;
using System.Windows.Resources;
using System.IO;

namespace WindowsPhoneApplication1
{
public partial class MainPage : PhoneApplicationPage
{
public MainPage()
{
InitializeComponent();
}
private void button1_Click(object sender, RoutedEventArgs e)
{
webBrowser1.Navigate(
new Uri(textBox1.Text, UriKind.Absolute));//在控件中打开网页
}
private void SaveStringToIsoStore(string strWebContent)
{
IsolatedStorageFile isoStore
= IsolatedStorageFile.GetUserStoreForApplication();//获取本地应用程序存储对象

//清除之前保存的网页
if (isoStore.FileExists("web.htm") == true)
{
isoStore.DeleteFile(
"web.htm");
}
StreamResourceInfo sr
= new StreamResourceInfo(new MemoryStream(System.Text.Encoding.UTF8.GetBytes(strWebContent)), "html/text");//转化为流
using (BinaryReader br = new BinaryReader(sr.Stream))
{
byte[] data = br.ReadBytes((int)sr.Stream.Length);
//保存文件到本地存储
using (BinaryWriter bw = new BinaryWriter(isoStore.CreateFile("web.htm")))
{
bw.Write(data);
bw.Close();
}
}
}
private void btnSave_Click(object sender, RoutedEventArgs e)
{
string strWebContent = webBrowser1.SaveToString();//获取网页的html代码
SaveStringToIsoStore(strWebContent);
}

private void btnLoad_Click(object sender, RoutedEventArgs e)
{
webBrowser1.Navigate(
new Uri("web.htm", UriKind.Relative));//加载本地保存的页面
}
}
}
原文地址:https://www.cnblogs.com/linzheng/p/1969452.html