稳扎稳打Silverlight(32) - 2.0Tip/Trick之MessageBox, Popup, 循环的几种实现方法, 动态变换主题...-白红宇

稳扎稳打Silverlight(32) - 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

作者：

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

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">

</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>

</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">

</StackPanel>

</StackPanel>

</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>

</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"

</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>

<StackPanel.Resources>

<res:Localization x:Name="myRes" />

</StackPanel.Resources>

</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

* 打开项目文件，本例为 Silverlight20.csproj，对需要支持的本地化资源做配置，本例为 <SupportedCultures>zh-CN;en-US</SupportedCultures>

* 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;

}

在 Application 中指定 Culture

private void Application_Startup(object sender, StartupEventArgs e)

{

// 通过如下方法来实现本地化（指定资源）

CultureInfo culture = new CultureInfo("zh-CN");

System.Threading.Thread.CurrentThread.CurrentCulture = culture;

System.Threading.Thread.CurrentThread.CurrentUICulture = culture;

this.RootVisual = new Page();

}

在 object 标记中指定 Culture

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">

</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();

}

本文转自webabcd 51CTO博客，原文链接：http://blog.51cto.com/webabcd/343978

，如需转载请自行联系原作者