wpf数据绑定
前段：
<Window x:Class="WpfApplication1.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:scm="clr-namespace:System.ComponentModel;assembly=WindowsBase" xmlns:local="clr-namespace:WpfApplication1" Title="MainWindow" Height="350" Width="525"> <Grid> <Grid.RowDefinitions> <RowDefinition Height="140"/> <RowDefinition Height="150"/> <RowDefinition Height="140"/> <RowDefinition Height="100*"/> </Grid.RowDefinitions> <StackPanel Grid.Row="0"> <TextBlock Width="248" Height="24" Text="股票名称:" TextWrapping="Wrap"/> <ListBox x:Name="listStockName" Width="248" Height="56"> <ListBoxItem Content="全通教育"/> <ListBoxItem Content="大智慧"/> <ListBoxItem Content="宝钢股份"/> <ListBoxItem Content="浦发银行"/> <ListBoxItem Content="工商银行"/> <ListBoxItem Content="中国建筑"/> <ListBoxItem Content="中国南车"/> </ListBox> <TextBlock Width="248" Height="24" Text="你所选中的股票名称:" /> <TextBlock Width="248" Height="24" Text="{Binding ElementName=listStockName, Path=SelectedItem.Content}"> </TextBlock> </StackPanel> <StackPanel Grid.Row="1"> <TextBlock Width="248" Height="24" Text="颜色:" TextWrapping="Wrap"/> <ListBox x:Name="listColor" Width="248" Height="56"> <ListBoxItem Content="Blue"/> <ListBoxItem Content="Red"/> <ListBoxItem Content="Green"/> <ListBoxItem Content="Gray"/> <ListBoxItem Content="Cyan"/> <ListBoxItem Content="GreenYellow"/> <ListBoxItem Content="Orange"/> </ListBox> <TextBlock Width="248" Height="24" Text="改变背景色:" /> <TextBlock Width="248" Height="24" Text="{Binding ElementName=listColor, Path=SelectedItem.Content, Mode=OneWay}" Background="{Binding ElementName=listColor, Path=SelectedItem.Content, Mode=OneWay}"> </TextBlock> <TextBox Name="txtTwoWay" Text="{Binding ElementName=listColor,Path=SelectedItem.Content,Mode=TwoWay}" Background="{Binding ElementName=listColor,Path=SelectedItem.Content,Mode=TwoWay}"></TextBox> </StackPanel> <StackPanel Grid.Row="2"> <StackPanel.Resources> <XmlDataProvider x:Key="MyColors" Source="Colors.xml" XPath="colors"> </XmlDataProvider> </StackPanel.Resources> <TextBlock Width="248" Height="24" Text="XML数据绑定:" TextWrapping="Wrap"/> <ListBox x:Name="listXmlColor" Width="248" Height="56" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding Source={StaticResource MyColors},XPath=color/@name}"> </ListBox> <TextBlock Width="248" Height="24" Text="选中的颜色:" /> <TextBlock Width="248" Height="24" Text="{Binding ElementName=listXmlColor, Path=SelectedValue, Mode=OneWay}"> </TextBlock> </StackPanel> <StackPanel Grid.Row="3"> <StackPanel.Resources> <ObjectDataProvider x:Key="students" ObjectType="{x:Type local:StudentService}" MethodName="GetStudentList"> </ObjectDataProvider> <DataTemplate x:Key="studentLayout" DataType="students"> <StackPanel Orientation="Horizontal"> <TextBlock Text="{Binding Path=Name}" FontWeight="Bold" Foreground="Blue"/> <TextBlock Text=", "></TextBlock> <TextBlock Text="{Binding Path=Age}"></TextBlock> <TextBlock Text=", "></TextBlock> <TextBlock Text="{Binding Path=Birthday}"></TextBlock> <TextBlock Text=", "></TextBlock> <TextBlock Text="{Binding Path=Country}"></TextBlock> </StackPanel> </DataTemplate> <CollectionViewSource x:Key="studentsView" Source="{Binding Source={StaticResource students}}"> <CollectionViewSource.SortDescriptions> <scm:SortDescription PropertyName="Name" Direction="Ascending" /> <scm:SortDescription PropertyName="Age" Direction="Descending" /> </CollectionViewSource.SortDescriptions> </CollectionViewSource> </StackPanel.Resources> <TextBlock Width="248" Height="24" Text="对象数据绑定:" TextWrapping="Wrap"/> <ListBox x:Name="listObjectBind" Width="450" Height="80" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding Source={StaticResource students}}" ItemTemplate="{DynamicResource studentLayout}"> </ListBox> <TextBlock Width="248" Height="24" Text="数据排序:" TextWrapping="Wrap"/> <DataGrid DataContext="{StaticResource studentsView}" AutoGenerateColumns="False" ItemsSource="{Binding}" CanUserAddRows="False"> <DataGrid.Columns> <DataGridTextColumn Binding="{Binding Name}" Header="名称" /> <DataGridTextColumn Binding="{Binding Age}" Header="年龄" /> <DataGridTextColumn Binding="{Binding Country}" Header="国家" /> <DataGridTextColumn Binding="{Binding Birthday}" Header="出生日期" /> </DataGrid.Columns> </DataGrid> </StackPanel> <Button Content="Button" HorizontalAlignment="Left" Margin="24,96,0,0" VerticalAlignment="Top" Width="75" RenderTransformOrigin="-0.179,-0.938" ContentStringFormat="http://dmsite.chinacloudsites.cn/root/index.html" Click="Button_Click"/> </Grid> </Window>
后端
using System; using System.Collections.Generic; using System.Diagnostics; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; namespace WpfApplication1 { /// <summary> /// MainWindow.xaml 的交互逻辑 /// </summary> public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); } } public class StudentService { public List<Student> GetStudentList() { Student liang = new Student(); liang.Age = "18"; liang.Name = "梁丘"; liang.Birthday = "1990-02-03"; liang.Country = "中国"; Student zuo = new Student(); zuo.Age = "22"; zuo.Name = "左丘"; zuo.Birthday = "1992-02-03"; zuo.Country = "中国"; Student diwu = new Student(); diwu.Age = "32"; diwu.Name = "第五言"; diwu.Birthday = "1982-11-03"; diwu.Country = "中国"; Student yang = new Student(); yang.Age = "12"; yang.Name = "羊舌微"; yang.Birthday = "2002-11-13"; yang.Country = "中国"; List<Student> personList = new List<Student>(); personList.Add(liang); personList.Add(zuo); personList.Add(diwu); personList.Add(yang); return personList; } } public class Student : DependencyObject { //声明一个静态只读的DependencyProperty字段 public static readonly DependencyProperty NameProperty; public static readonly DependencyProperty AgeProperty; public static readonly DependencyProperty BirthdayProperty; public static readonly DependencyProperty CountryProperty; static Student() { //注册我们定义的依赖属性Name,Age,birthday,Country NameProperty = DependencyProperty.Register("Name", typeof(string), typeof(Student), new PropertyMetadata("名称", OnValueChanged)); AgeProperty = DependencyProperty.Register("Age", typeof(string), typeof(Student), new PropertyMetadata("年龄", OnValueChanged)); BirthdayProperty = DependencyProperty.Register("Birthday", typeof(string), typeof(Student), new PropertyMetadata("出生日期", OnValueChanged)); CountryProperty = DependencyProperty.Register("Country", typeof(string), typeof(Student), new PropertyMetadata("国家", OnValueChanged)); } private static void OnValueChanged(DependencyObject o, DependencyPropertyChangedEventArgs e) { //当值改变时，我们可以在此做一些逻辑处理 } //属性包装器，通过它来读取和设置我们刚才注册的依赖属性 public string Name { get { return (string)GetValue(NameProperty); } set { SetValue(NameProperty, value); } } public string Age { get { return (string)GetValue(AgeProperty); } set { SetValue(AgeProperty, value); } } public string Birthday { get { return (string)GetValue(BirthdayProperty); } set { SetValue(BirthdayProperty, value); } } public string Country { get { return (string)GetValue(CountryProperty); } set { SetValue(CountryProperty, value); } } } }
