Windows Phone 7 自定义弹出窗口

< ResourceDictionary
    xmlns = " http://schemas.microsoft.com/winfx/2006/xaml/presentation "
    xmlns:x = " http://schemas.microsoft.com/winfx/2006/xaml "
    xmlns: local = " clr-namespace:MessageControl;assembly=MessageControl "
    xmlns:d = " http://schemas.microsoft.com/expression/blend/2008 "
    xmlns:mc = " http://schemas.openxmlformats.org/markup-compatibility/2006 "    
    mc:Ignorable = " d "
     >
     < Style TargetType = " local:MyMessage " >
         < Setter  Property = " FontFamily "  Value = " {StaticResource PhoneFontFamilyNormal} " />
         < Setter  Property = " FontSize "  Value = " {StaticResource PhoneFontSizeNormal} " />
         < Setter  Property = " Foreground "  Value = " {StaticResource PhoneForegroundBrush} " />
         < Setter  Property = " Background "  Value = " Snow " />
         < Setter  Property = " Width "  Value = " 480 "   />
         < Setter  Property = " Height "  Value = " 800 "   />
         < ! -- 定义模板的Template -->
         < Setter  Property = " Template " >
             < Setter.Value >
                 < ControlTemplate TargetType = " local:MyMessage " >
                     < Grid VerticalAlignment = " Stretch " >
                         < Rectangle x:Name = " backgroundRect "  Grid.Row = " 0 "  Fill = " Black "  Opacity = " 0.7 " />
                         < Border 
                            VerticalAlignment = " Top "  
                            BorderThickness = " 3 "  
                            BorderBrush = " Black " >
                             < StackPanel Margin = " 0 " >
                                 < ContentPresenter x:Name = " body " />
                             </ StackPanel >
                         </ Border >
                     </ Grid >
                 </ ControlTemplate >
             </ Setter.Value >
         </ Setter >
     </ Style >
</ ResourceDictionary >
using System.Windows;
using System.Windows.Controls;
using System.Windows.Shapes;
using System.Windows.Controls.Primitives;
using Microsoft.Phone.Controls;

namespace MessageControl
{
     public  class MyMessage : ContentControl
    {
         private  System.Windows.Controls.ContentPresenter body;
         private  System.Windows.Shapes.Rectangle backgroundRect;
         private   object  content;

         public  MyMessage()
        {
             // 这将类的styleKey设置为MyMessage,这样在模板中的style才能通过TargetType = " local:MyMessage " 与之相互绑定
            this.DefaultStyleKey  =  typeof(MyMessage);
        }
         // 重写OnApplyTemplate()方法获取模板样式的子控件
         public  override void OnApplyTemplate()
        {
            base.OnApplyTemplate();
            this.body  =  this.GetTemplateChild( " body " )  as  ContentPresenter;
            this.backgroundRect  =  this.GetTemplateChild( " backgroundRect " )  as  Rectangle;
            InitializeMessagePrompt();
        }
         // 使用Popup控件来制作弹窗
        internal Popup ChildWindowPopup
        {
             get ;
             private   set ;
        }
         // 获取当前应用程序的UI框架PhoneApplicationFrame
         private  static PhoneApplicationFrame RootVisual
        {
             get
            {
                return Application.Current  ==   null  ?  null  : Application.Current.RootVisual  as  PhoneApplicationFrame;
            }
        }
         // 弹窗的内容，定义为object，可以赋值为各种各样的控件
         public   object  MessageContent
        {
             get
            {
                return this.content;
            }
             set
            {
                this.content  =  value;
            }
        }
         // 隐藏弹窗
         public  void Hide()
        {
             if  (this.body ! =   null )
            {
                 // 关闭Popup控件
                this.ChildWindowPopup.IsOpen  =   false ;
            }
        }
         // 判断弹窗是否打开
         public  bool IsOpen 
        {
             get  
            {
                return ChildWindowPopup ! =   null   &&  ChildWindowPopup.IsOpen;
            } 
        }
         // 打开弹窗
         public  void Show()
        {
             if  (this.ChildWindowPopup  ==   null )
            {
                this.ChildWindowPopup  =   new  Popup();
                this.ChildWindowPopup.Child  =  this;
            }

             if  (this.ChildWindowPopup ! =   null   &&  Application.Current.RootVisual ! =   null )
            {
                InitializeMessagePrompt();
                this.ChildWindowPopup.IsOpen  =   true ;
            }
        }
         // 初始化弹窗
         private  void InitializeMessagePrompt()
        {
             if  (this.body  ==   null )
                return;
            this.backgroundRect.Visibility  =  System.Windows.Visibility.Visible;
             // 把模板中得body控件内容赋值为你传过来的控件
            this.body.Content  =  MessageContent;
            this.Height  =   800 ;
        }
    }
}

< UserControl x:Class = " TestMessageControl.WindowsPhoneControl1 "
    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 "
    FontFamily = " {StaticResource PhoneFontFamilyNormal} "
    FontSize = " {StaticResource PhoneFontSizeNormal} "
    Foreground = " {StaticResource PhoneForegroundBrush} "
    d:DesignHeight = " 250 "  d:DesignWidth = " 480 " >
    
     < Grid x:Name = " LayoutRoot "  Background = " LightBlue " >
         < Button Content = " 是 "  Height = " 72 "  HorizontalAlignment = " Left "  Margin = " 40,169,0,0 "  Name = " button1 "  VerticalAlignment = " Top "  Width = " 160 "   />
         < Button Content = " 关闭 "  Height = " 72 "  HorizontalAlignment = " Left "  Margin = " 254,169,0,0 "  Name = " button2 "  VerticalAlignment = " Top "  Width = " 160 "  Click = " button2_Click "   />
         < TextBlock Height = " 53 "  HorizontalAlignment = " Left "  Margin = " 54,72,0,0 "  Name = " textBlock1 "  Text = " 《深入浅出Windows Phone 7应用开发》 "  VerticalAlignment = " Top "  Width = " 369 "   />
     </ Grid >
</ UserControl >

using System.Windows;
using System.Windows.Controls;

namespace TestMessageControl
{
     public  partial class WindowsPhoneControl1 : UserControl
    {
         public  WindowsPhoneControl1()
        {
            InitializeComponent();
        }

         private  void button2_Click( object  sender, RoutedEventArgs e)
        {
            (App.Current  as  App).myMessage.Hide();
        }
    }
}

namespace TestMessageControl
{
     public  partial class App : Application
    {
        ……
         public  MyMessage myMessage  =   new  MyMessage { MessageContent  =   new  WindowsPhoneControl1() };
        ……
    }
}

using Microsoft.Phone.Controls;
using MessageControl;
namespace TestMessageControl
{
     public  partial class MainPage : PhoneApplicationPage
    {
         public  MainPage()
        {
            InitializeComponent();
        }
         private  void button1_Click( object  sender, RoutedEventArgs e)
        {
            (App.Current  as  App).myMessage.Show();
        }
    }
}