2.0Tip/Trick之MessageBox, Popup, 循环的几种实现方法, 动态变换主题, 本地化(多语言), 响应鼠标双击事件

介绍
Silverlight 2.0 提示和技巧系列

• MessageBox - MessageBox 的演示 
• Popup - Popup 弹窗口的演示 
• 循环的几种实现方法 - DispatcherTimer 方式, Storyboard 方式, Timer 方式,  CompositionTarget.Rendering 方式
• 动态变换主题 - 演示如何动态地变换主题 
• 本地化(多语言) - 演示如何实现对多语言的支持
• 响应鼠标双击事件 - 响应并处理鼠标的双击事件

在线DEMO
http://www.cnblogs.com/webabcd/archive/2008/10/09/1307486.html


示例
1、演示 MessageBox
MessageBoxDemo.xaml 

<UserControl x:Class="Silverlight20.Tip.MessageBoxDemo"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Grid x:Name="LayoutRoot" Background="White">
        <StackPanel>
            <Button x:Name="btnMessageBox" Content="MessageBox 演示" Click="btnMessageBox_Click" Margin="5" />
            <TextBlock x:Name="lblResult" />
        </StackPanel>
    </Grid>
</UserControl>

MessageBoxDemo.xaml.cs

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;

namespace Silverlight20.Tip
{
    public partial class MessageBoxDemo : UserControl
    {
        public MessageBoxDemo()
        {
            InitializeComponent();
        }

        private void btnMessageBox_Click(object sender, RoutedEventArgs e)
        {
            MessageBoxResult result = MessageBox.Show("信息", "标题", MessageBoxButton.OKCancel);

            lblResult.Text += result.ToString();
        }
    }
}

2、演示 Popup 弹出窗口
PopupDemo.xaml

<UserControl x:Class="Silverlight20.Tip.PopupDemo"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Grid x:Name="LayoutRoot" Background="White">
        <Button x:Name="btnPopup" Content="弹出新窗口" Margin="5" Width="80" Height="40" Click="btnPopup_Click" HorizontalAlignment="Left" VerticalAlignment="Top" />
    </Grid>
</UserControl>

PopupDemo.xaml.cs

/**//*
 * 如果需要 Silverlight 宿主可以使用 HtmlPage.PopupWindow() 弹出新窗口，则需要如下参数
 * <param name="allowHtmlPopupWindow" value="true" />
 * 此参数：同域时默认为 ture ； 跨域时默认为 false
 */

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.Windows.Browser;

namespace Silverlight20.Tip
{
    public partial class PopupDemo : UserControl
    {
        public PopupDemo()
        {
            InitializeComponent();
        }

        private void btnPopup_Click(object sender, RoutedEventArgs e)
        {
            // HtmlPopupWindowOptions - 需要弹出的新窗口的参数（如果浏览器是以标签的形式打开新窗口，则此参数无效）
            HtmlPopupWindowOptions opt = new HtmlPopupWindowOptions();
            opt.Left = 0;
            opt.Top = 0;
            opt.Width = 320;
            opt.Height = 240;

            // HtmlPage.IsPopupWindowAllowed - 指定 Silverlight 宿主是否可以使用 HtmlPage.PopupWindow() 来弹出新的浏览器窗口
            // HtmlPage.PopupWindow() - 弹出新窗口
            if (true == HtmlPage.IsPopupWindowAllowed) 
                HtmlPage.PopupWindow(new Uri("http://webabcd.cnblogs.com/", UriKind.Absolute), "newWindow", opt);
        }
    }
}

3、做循环程序的几种实现方法
LoopsDemo.xaml

<UserControl x:Class="Silverlight20.Tip.LoopsDemo"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Grid x:Name="LayoutRoot" Background="White">
        <StackPanel>
            <StackPanel Orientation="Horizontal" Margin="5">
                <TextBlock Text="DispatcherTimer: " />
                <TextBlock x:Name="resultDispatcherTimer" />
            </StackPanel>
            <StackPanel Orientation="Horizontal" Margin="5">
                <TextBlock Text="Timer: " />
                <TextBlock x:Name="resultTimer" />
            </StackPanel>
            <StackPanel Orientation="Horizontal" Margin="5">
                <TextBlock Text="StoryBoard: " />
                <TextBlock x:Name="resultStoryBoard" />
            </StackPanel>
            <StackPanel Orientation="Horizontal" Margin="5">
                <TextBlock Text="CompositionTarget: " />
                <TextBlock x:Name="resultCompositionTarget" />
            </StackPanel>
        </StackPanel>
    </Grid>
</UserControl>

LoopsDemo.xaml.cs

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.Windows.Threading;
using System.Threading;

namespace Silverlight20.Tip
{
    public partial class LoopsDemo : UserControl
    {
        public LoopsDemo()
        {
            InitializeComponent();

            this.Loaded += new RoutedEventHandler(LoopsDemo_Loaded);
        }

        void LoopsDemo_Loaded(object sender, RoutedEventArgs e)
        {
            DispatcherTimerDemo();
            StoryboardDemo();
            TimerDemo();
            CompositionTargetDemo();
        }


        /**//// <summary>
        /// DispatcherTimer - 在 UI 线程上循环（会受到 UI 线程的影响）
        /// </summary>
        private void DispatcherTimerDemo()
        {
            DispatcherTimer dTimer = new DispatcherTimer();
            dTimer.Interval = TimeSpan.Zero;
            dTimer.Tick += new EventHandler(dTimer_Tick);
            dTimer.Start();
        }

        void dTimer_Tick(object sender, EventArgs e)
        {
            resultDispatcherTimer.Text = DateTime.Now.ToString("hh:mm:ss fff");
        }


        Storyboard _board;
        /**//// <summary>
        /// Storyboard - 在非 UI 线程上循环
        /// </summary>
        private void StoryboardDemo()
        {
            _board = new Storyboard();
            _board.Duration = TimeSpan.Zero;
            _board.Completed += new EventHandler(_board_Completed);
            _board.Begin();
        }

        void _board_Completed(object sender, EventArgs e)
        {
            resultStoryBoard.Text = DateTime.Now.ToString("hh:mm:ss fff");
            _board.Begin();
        }


        Timer _timer;
        /**//// <summary>
        /// Timer - 在非 UI 线程上循环
        /// </summary>
        private void TimerDemo()
        {
            _timer = new Timer(_timer_CallBack, null, TimeSpan.Zero, TimeSpan.Zero);
        }

        private void _timer_CallBack(object state)
        {
            this.Dispatcher.BeginInvoke(() =>
            {
                resultTimer.Text = DateTime.Now.ToString("hh:mm:ss fff");
            });
            _timer.Change(TimeSpan.Zero, TimeSpan.Zero);
        }


        /**//// <summary>
        /// CompositionTarget.Rendering - 每呈现 1 帧都会触发此事件（相当于 Flash 的 Event.ENTER_FRAME）
        /// </summary>
        private void CompositionTargetDemo()
        {
            CompositionTarget.Rendering += new EventHandler(CompositionTarget_Rendering);
        }

        void CompositionTarget_Rendering(object sender, EventArgs e)
        {
            resultCompositionTarget.Text = DateTime.Now.ToString("hh:mm:ss fff");
        }
    }
}

4、动态变换主题(以 Toolkit 中的主题为例，引用 System.Windows.Controls.Theming.Toolkit.dll 和需要用到的相关主题文件)
ThemeDemo.xaml

<UserControl x:Class="Silverlight20.Tip.ThemeDemo"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Grid x:Name="LayoutRoot" Background="White">
        <Button Content="ExpressionDark 样式" Width="120" Height="40" VerticalAlignment="Top" HorizontalAlignment="Left" Margin="5" Click="Button_Click"></Button>
    </Grid>
</UserControl>

<!--
    
在 xaml 文件中声明的方式使用主题
    
<UserControl x:Class="Silverlight20.Tip.ThemeDemo"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:myTheme="clr-namespace:System.Windows.Controls.Theming;assembly=System.Windows.Controls.Theming.Toolkit">
    <Grid x:Name="LayoutRoot" Background="White"
          myTheme:ImplicitStyleManager.ApplyMode="Auto" 
          myTheme:ImplicitStyleManager.ResourceDictionaryUri="/Silverlight20;component/Theme/System.Windows.Controls.Theming.ExpressionDark.xaml"
    >
        <Button Content="ExpressionDark 样式" Width="120" Height="40" VerticalAlignment="Top" HorizontalAlignment="Left" Margin="5"></Button>
    </Grid>
</UserControl>
-->

ThemeDemo.xaml.cs

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.Windows.Controls.Theming;

namespace Silverlight20.Tip
{
    public partial class ThemeDemo : UserControl
    {
        public ThemeDemo()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            // 设置主题的路径并将其赋值给需要使用该主题的控件
            Uri uri = new Uri("/Silverlight20;component/Theme/System.Windows.Controls.Theming.ExpressionDark.xaml", UriKind.Relative);
            ImplicitStyleManager.SetResourceDictionaryUri(LayoutRoot, uri);

            // 设置主题的应用模式后，将主题应用到指定的控件，此控件内的所用控件都将使用该主题
            ImplicitStyleManager.SetApplyMode(LayoutRoot, ImplicitStylesApplyMode.Auto);
            ImplicitStyleManager.Apply(LayoutRoot);
        }
    }
}

5、演示如何实现本地化（多语言的支持）
LocalizationDemo.xaml

<UserControl x:Class="Silverlight20.Tip.LocalizationDemo"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:res="clr-namespace:Silverlight20.Resource">
    <StackPanel Orientation="Vertical">
        
        <StackPanel Margin="5">
            <TextBlock Text="姓名: " />
            <TextBlock x:Name="lblName" />
            <TextBlock  Text="年龄: " />
            <TextBlock x:Name="lblAge" />
        </StackPanel>

        <!--通过声明的方式调用指定的本地化资源-->
        <StackPanel.Resources>
            <res:Localization x:Name="myRes" />
        </StackPanel.Resources>
        <StackPanel Margin="5">
            <TextBlock Text="姓名: " />
            <TextBlock Text="{Binding Name, Source={StaticResource myRes}}" />
            <TextBlock  Text="年龄: " />
            <TextBlock Text="{Binding Age, Source={StaticResource myRes}}" />
        </StackPanel>
        
    </StackPanel>
</UserControl>

LocalizationDemo.xaml.cs

/**//*
 * 配置本地化资源，如本例中需要添加 Localization.resx, Localization.zh-CN.resx 和 Localization.en-US.resx文件
 * 要在资源文件中设置好相应的 Name 和 Value
 * 本例中，要把 Silverlight20.Resource.Localization 类及其构造函数的访问级别手动修改为 Public 
 * 具体如何实现本地化，可以查 MSDN 中的 CultureInfo
 * 如何指定需要调用的本地化资源：在 object 的 param 中指定；在 Application_Startup 中指定
 */

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;

namespace Silverlight20.Tip
{
    public partial class LocalizationDemo : UserControl
    {
        public LocalizationDemo()
        {
            InitializeComponent();

            this.Loaded += new RoutedEventHandler(LocalizationDemo_Loaded);
        }

        void LocalizationDemo_Loaded(object sender, RoutedEventArgs e)
        {
            // 通过编程的方式调用指定的本地化资源
            lblName.Text = Resource.Localization.Name;
            lblAge.Text = Resource.Localization.Age;
        }
    }
}

6、响应并处理鼠标的双击事件
DoubleClick.xaml

<UserControl x:Class="Silverlight20.Tip.DoubleClick"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Grid x:Name="LayoutRoot" Background="White">
        <StackPanel>
            <Button x:Name="btn" Content="Double Click Me" Margin="5" Click="btn_Click" />
            <TextBox x:Name="result" Margin="5" />
        </StackPanel>
    </Grid>
</UserControl>

DoubleClick.xaml.cs

/**//*
 * 根据 DispatcherTimer 是否为启动状态判断在某一时间段内是否按了两次鼠标左键
 *     第一按鼠标左键则启动 DispatcherTimer，双击或者到了间隔时间则停止 DispatcherTimer
 *     每次按键，如果 DispatcherTimer 为启动状态，即为双击
 */

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.Windows.Threading;

namespace Silverlight20.Tip
{
    public partial class DoubleClick : UserControl
    {
        DispatcherTimer _dTimer;

        public DoubleClick()
        {
            InitializeComponent();

            this.Loaded += new RoutedEventHandler(DoubleClick_Loaded);
        }

        void DoubleClick_Loaded(object sender, RoutedEventArgs e)
        {
            _dTimer = new DispatcherTimer();
            _dTimer.Interval = TimeSpan.FromMilliseconds(300);
            _dTimer.Tick += new EventHandler(_dTimer_Tick);
        }

        private void btn_Click(object sender, RoutedEventArgs e)
        {
            if (_dTimer.IsEnabled)
            {
                result.Text += "双击";
                _dTimer.Stop();
            }
            else
            {
                _dTimer.Start();
            }
        }

        void _dTimer_Tick(object sender, EventArgs e)
        {
            _dTimer.Stop();
        }
    }
}