Silverlight数据绑定简单例子

新建一个类：Book

using System.Collections.Generic;
using System.ComponentModel;
namespace GlobalStyles
{
    public class Book : INotifyPropertyChanged
    {
        private string bookTitle;
        private string bookAuthor;
        private int quantityOnHand;
        private bool isPublished;
        private List<string> myChapters;

        // implement the required event for the interface
        public event PropertyChangedEventHandler PropertyChanged;

        public string Title
        {
            get { return bookTitle; }
            set
            {
                bookTitle = value;
                NotifyPropertyChanged("Title");
            }       // end set
        }           // end property

        public string Author
        {
            get { return bookAuthor; }
            set
            {
                bookAuthor = value;
                NotifyPropertyChanged("Author");
            }       // end set

        }

        public List<string> Chapters
        {
            get { return myChapters; }
            set
            {
                myChapters = value;
                NotifyPropertyChanged("Chapters");
            }
        }

        public bool IsPublished
        {
            get { return isPublished; }
            set
            {
                isPublished = value;
                NotifyPropertyChanged("IsPublished");
            }       // end set
        }

        public int QuantityOnHand
        {
            get { return quantityOnHand; }
            set
            {
                quantityOnHand = value;
                NotifyPropertyChanged("QuantityOnHand");
            }       // end set
        }

        // factoring out the call to the event
        public void NotifyPropertyChanged(string propertyName)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this,
                    new PropertyChangedEventArgs(propertyName));
            }

        }
    }               // end class
}

设计页面：

<UserControl x:Class="GlobalStyles.Page"
    xmlns="http://schemas.microsoft.com/client/2007"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Width="400" Height="300">
        <Grid x:Name="LayoutRoot" Background="White" ShowGridLines="False">
            <Grid.RowDefinitions>
                <RowDefinition Height="20" />
                <RowDefinition MaxHeight="30" />
                <RowDefinition MaxHeight="30" />
                <RowDefinition MaxHeight="70" />
                <RowDefinition MaxHeight="30" />
                <RowDefinition MaxHeight="30" />
                <RowDefinition MaxHeight="40" />
                <RowDefinition MaxHeight="50" />
            </Grid.RowDefinitions>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="10"/>
                <ColumnDefinition Width="170"/>
                <ColumnDefinition Width="200" />
            </Grid.ColumnDefinitions>

            <TextBlock x:Name="TitlePrompt" Text="Title: "
             Style="{StaticResource TextBlockPrompt}"
             Grid.Row="1" Grid.Column="1" />
            
        <TextBlock x:Name="Title"
            Text="{Binding Title, Mode=OneWay }"
            Style="{StaticResource TextBlockValue}"
           
            Grid.Row="1"  Grid.Column="2"   />
       
        <TextBlock x:Name="AuthorPrompt" Text="Author: "
            Style="{StaticResource TextBlockPrompt}"
            Grid.Row="2" Grid.Column="1"  />
           
        <TextBlock x:Name="Author" Text="{Binding Author, Mode=OneWay }"
            Style="{StaticResource TextBlockValue}"
            Grid.Row="2"  Grid.Column="2"   />

        <TextBlock x:Name="ChapterPrompt" Text="Chapters" 
            Style="{StaticResource TextBlockPrompt}"
            Grid.Row="3" Grid.Column="1"  />
           
        <ListBox x:Name="Chapters"
            ItemsSource="{Binding  Chapters, Mode=OneWay}"
           
            Style="{StaticResource ListBoxStyle}"
            Grid.Row="3" Grid.Column="2" />
          

        <TextBlock x:Name="PublishedPrompt"
            Text="Published?: "  
            Style="{StaticResource TextBlockPrompt}"
            Grid.Row="4" Grid.Column="1"  />
           
           
        <CheckBox x:Name="Literature"
            Content="Publshsed"
            IsChecked = "{Binding IsPublished, Mode=TwoWay}"
            Style="{StaticResource CheckBoxStyle}"
            FontFamily="Comic Sans MS"
            Grid.Row="4" Grid.Column="2"/>           
      
        <TextBlock x:Name="QOHPrompt"
        Text="Quantity On Hand: "
        Style="{StaticResource TextBlockPrompt}"
        Foreground="Red"
        FontWeight="Bold"
        Grid.Row="5" Grid.Column="1"  />
           
        <TextBox x:Name="QuantityOnHand"  
            Text="{Binding QuantityOnHand, Mode=TwoWay}"
            Style="{StaticResource TextBoxStyle}" 
            Grid.Row="5" Grid.Column="2" />

        <Button x:Name="Change" Content="Change Book" 
         Style="{StaticResource Button}"
        Grid.Row="6" Grid.Column="1" Grid.ColumnSpan="2"  />
    </Grid>

   
</UserControl>

关键的页面代码：

using System;
using System.Collections.Generic;
using System.Linq;
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 GlobalStyles
{
    public partial class Page : UserControl
    {
        private Book b1;     // now a class member
        private Book b2;
        private Book currentBook;
        public Page()
        {
            InitializeComponent();
            Loaded += new RoutedEventHandler(Page_Loaded);
        }

        void Page_Loaded(object sender,
            RoutedEventArgs e)
        {
            // event handler for change button
            Change.Click +=
                new RoutedEventHandler(Change_Click);

            // initial book values           
            b1 = new Book();
            InitializeBleak(b1);
            currentBook = b2 = new Book();
            InitializeProgramming(b2);
            SetDataSource();
        }

        private void InitializeProgramming(Book b)
        {
            b.Title = "Programming Silverlight";
            b.Author = "Jesse Liberty";
            b.IsPublished = false;
            b.QuantityOnHand = 20;
            b.Chapters = new List<string>() { "Introduction", "Controls", "Events", "Styles" };
        }

        private void InitializeBleak(Book b)
        {
            b.Title = "Bleak House";
            b.Author = "Charles Dickens";
            b.IsPublished = false;
            b.QuantityOnHand = 150;
            b.Chapters = new List<string>() { "In Chancery", "In Fashion", "A Progress", "Telescoopic Philanthropy",
               "A Morning Adventure", "Quite at Home", "The Ghosts Walk", "Covering Sins", "Signs and Tokens", "The Law Writer"};
        }

        void Change_Click(object sender, RoutedEventArgs e)
        {
            if (currentBook == b1)
                currentBook = b2;
            else
                currentBook = b1;
            SetDataSource();
        }

        void SetDataSource()
        {
            LayoutRoot.DataContext = currentBook;
            //Title.DataContext = currentBook;
            //Author.DataContext = currentBook;
            //Chapters.DataContext = currentBook;
            //MultipleAuthor.DataContext = currentBook;
            //QuantityOnHand.DataContext = currentBook;
        }
    }
}