在本文中将以ListBox为例讲述在Silverlight中Binding数据集合.
在这里我们将实体集的绑定分为三类:
一、直接控件绑定。
二、DataTemplate模板绑定。
三、详细信息绑定。
首先:我们来看第一类直接控件绑定是对控件的ItemsSource属性进行绑定,然后使用SelectedValuePath指定选择值,DisplayMemberPath指定显示值的方式。Xaml代码如下:
<!--第一种:直接绑定一个Collection实体集合--> <ListBox Height="239" HorizontalAlignment="Left" Margin="112,25,0,0" Name="lbCollection" VerticalAlignment="Top" Width="198" ItemsSource="{Binding}" SelectedValuePath="Author" DisplayMemberPath="Name" />
其次:DataTemplate是对象制作一个数据模板,所以的数据实体都安装这个数据模板来呈现,现在我们看看其Xaml代码如下:
<!--第二种:使用DataTemplate绑定一个Collection实体集合--> <ListBox Height="239" HorizontalAlignment="Left" Margin="478,25,0,0" Name="lbTemplate" ItemsSource="{Binding}" VerticalAlignment="Top" Width="198" > <ListBox.ItemTemplate> <DataTemplate> <StackPanel Orientation="Horizontal" Margin="3"> <sdk:Label Content="DocName:"></sdk:Label> <TextBlock Text="{Binding Name}"></TextBlock> <sdk:Label Content=" Author:"></sdk:Label> <TextBlock Text="{Binding Author}"></TextBlock> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox>
最后:详细信息绑定是当用户点击列表中某一个实体标题属性的时候,自动显示其实体的详细信息给用户观看,注意在这里列表的数据源以及详细信息显示页的数据源都必须是CollectionViewSource类型的,其Xaml代码如下:
<!--第三种:使用绑定一个Detail详细信息--> <StackPanel HorizontalAlignment="Left" Orientation="Horizontal" VerticalAlignment="top" Width="500" Height="240" Margin="112,294,188,66"> <ListBox Height="239" HorizontalAlignment="Left" Name="lbDetail" VerticalAlignment="Top" Width="198" ItemsSource="{Binding}" SelectedValuePath="Author" DisplayMemberPath="Name" /> <StackPanel x:Name="spDetail" Width="300" Height="200"> <TextBlock FontWeight="Bold" Text="{Binding Name}" /> <TextBlock FontStyle="Italic" Text="{Binding Author}"/> <TextBlock Text="{Binding Content}" /> <TextBlock Text="{Binding WriteDate}" /> </StackPanel> </StackPanel>
本实例的后台代码如下,注意第三种详细信息的绑定方式:
public partial class MainPage : UserControl { public MainPage() { InitializeComponent(); //获取实体集合 ObservableCollection<Info> list = Info.GetList(); //第一种数据源赋值 this.lbCollection.DataContext = list; //第二种数据源赋值 this.lbTemplate.DataContext = list; //第三种数据源赋值 CollectionViewSource collection = new CollectionViewSource { Source = list }; this.lbDetail.DataContext = collection; this.spDetail.DataContext = collection; } }
本实例定义一个实体以及实体集合如下:
public class Info { public string Name { get; set; } public string Author { get; set; } public string Content { get; set; } public string WriteDate { get; set; } public static ObservableCollection<Info> GetList() { ObservableCollection<Info> list = new ObservableCollection<Info>(); list.Add(new Info() { Name = "文章一", Author = "作者一", Content = "内容一", WriteDate = "2009-02-03" }); list.Add(new Info() { Name = "文章二", Author = "作者二", Content = "内容二", WriteDate = "2009-03-03" }); list.Add(new Info() { Name = "文章三", Author = "作者三", Content = "内容三", WriteDate = "2009-04-03" }); list.Add(new Info() { Name = "文章四", Author = "作者四", Content = "内容四", WriteDate = "2009-05-03" }); list.Add(new Info() { Name = "文章五", Author = "作者五", Content = "内容五", WriteDate = "2009-06-03" }); list.Add(new Info() { Name = "文章六", Author = "作者六", Content = "内容六", WriteDate = "2009-07-03" }); return list; } }
本实例采用Vs2010+Silverlight 4编写,如需源码请点击 SLBinding3.rar 下载。
来源:https://www.cnblogs.com/chengxingliang/archive/2012/03/12/2379305.html