WPF的数据绑定方法虽然很简单，但感觉实现的方法有很多种，目前没有一个标准，所以根据我已经看过的例子做了一个分类，分别是绑定到：对象、XML、控件和ADO.NET。
I. Binding to Object
1. Binding to a method using ObjectDataProvider
The data layer operations only in MyData.cs
sample:
http://winfx.members.winisp.net/files/samplemtapp.zip
http://blogs.msdn.com/karstenj/archive/2006/01/27/518499.aspx
Method GetMyDataObjects in Class Facroty returns object class MyDataObject which is inherit ObservableCollection<FOO>
FOO is another INotifyPropertyChanged interface Class, and FOO has property Description
(INotifyProperty means when the class object is changed it will send out notification)
Binding process:
1)Define namespace: xmlns:SampleMTApp=”clr-namespace:SampleMTApp”
2)Define ObjectDataProvider: <ObjectDataProvider x:Key=”FactoryDS” d:IsDataSource=”True” ObjectType=”{x:Type SampleMTApp:Factory}”/>
3)Binding data to listbox: <ListBox ItemsSource=”{Binding GetMyDataObjects, Mode=Default, Source={StaticResource FactoryDS}}” />
4) DataTemplate
<DataTemplate x:Key=”FOOTemplate1″>
<StackPanel>
<TextBlock Text=”{Binding Description}”/>
</StackPanel>
</DataTemplate>
2. Binding DataContext in Window.DataContext (ObjectDataProvider not needed)
sample:
http://j832.com/work/namita/BasicDatabinding_MasterDetail.zip
http://blogs.msdn.com/namitag/archive/2005/09/21/472461.aspx
AuctionItem.cs: define Class AuctionItem : INotifyPropertyChanged
MyApp.xaml.cs: define Class.AuctionItems : ObservableCollection<AuctionItem> (create new items of AuctionItem)
Window1.xaml.cs: use [CollectionViewSource cv = root.DataContext as CollectionViewSource;] to action in button event handler
Binding Process:
1)Define DataContext in Window1.xaml:
<Window.DataContext>
<CollectionViewSource>
<CollectionViewSource.Source>
<local:AuctionItems/>
</CollectionViewSource.Source>
</CollectionViewSource>
</Window.DataContext>
2) Binding Listbox:
<ListBox ItemsSource=”{Binding Path=.}” IsSynchronizedWithCurrentItem=”True”>
3) Binding label: (the current item in listbox)
<Label Content=”{Binding Path=/}” >
4) DataTemplate
<DataTemplate DataType=”{x:Type local:AuctionItem}” >
…
<Image>
<Image.Source>
<Binding Path=”Image”/>
</Image.Source>
</Image>
…
More: this sample also shows how to use Converter and MultiBinding
3. Binding DataContext in controls to ObjectDataProvider
sample:
http://learnwpf.com/Data/Images/LearnWPF.DataTemplates.zip
http://learnwpf.com/Posts/Post.aspx?postId=386bae2f-5dc1-4b1d-8dd9-6ceed0428d88
MyApp.xaml:
<Application.Resources>
…
<ObjectDataProvider x:Key=”Employees” ObjectType=”{x:Type l:MSEmployeeCollection}”/>
</Application.Resources>
Window1.xaml:
<StackPanel Margin=”10″ DataContext=”{StaticResource Employees}”>
…
<Button Content=”{Binding Path=[0]}” />
<ComboBox ItemsSource=”{Binding}” SelectedIndex=”0″ />
</StackPanel>
1) DataContext another format : binding to StackPanel
2) Button bind to single item [0]
3) ComblBox bind to multi items, so no Path
II. Binding to XML
1. Use Source include .xml file to XmlDataProvider
sample code (copy & run in XamlPad):
<?xml version=’1.0′ encoding=’utf-8′?>
<StackPanel xmlns=”http://schemas.microsoft.com/winfx/2006/xaml/presentation” xmlns:x=”http://schemas.microsoft.com/winfx/2006/xaml” Margin=”10″>
<StackPanel.Resources>
<XmlDataProvider x:Key=”Blog” Source=”http://home.wangjianshuo.com/index.xml”/>
<DataTemplate x:Key=”TitleTemplate”>
<TextBlock Text=”{Binding XPath=title}”/>
</DataTemplate>
</StackPanel.Resources>
<Label Content=”{Binding Source={StaticResource Blog}, XPath=/rss/channel/title}” FontSize=”24″ FontWeight=”Bold” />
<Label Content=”{Binding Source={StaticResource Blog}, XPath=/rss/channel/description}” FontSize=”18″ />
<DockPanel DataContext=”{Binding Source={StaticResource Blog}, XPath=/rss/channel/item}” >
<ListBox DockPanel.Dock=”Left” ItemsSource=”{Binding}” ItemTemplate=”{StaticResource TitleTemplate}” IsSynchronizedWithCurrentItem=”True” />
<TextBox Name=”Contents” Text=”{Binding XPath=description}” TextWrapping=”Wrap” Width=”Auto” />
</DockPanel>
</StackPanel>
2. Use x:XData define the xml structure inside current XmlDataProvider
sample code (copy & run in XamlPad):
<StackPanel xmlns=”http://schemas.microsoft.com/winfx/2006/xaml/presentation”
xmlns:x=”http://schemas.microsoft.com/winfx/2006/xaml“>
<StackPanel.Resources>
<XmlDataProvider x:Key=”FavoriteColors”>
<x:XData>
<Colors xmlns=””>
<Color>Blue</Color>
<Color>Black</Color>
<Color>Green</Color>
<Color>Red</Color>
</Colors>
</x:XData>
</XmlDataProvider>
</StackPanel.Resources>
<TextBlock HorizontalAlignment=”Center”
FontWeight=”Bold”>
XML Example
</TextBlock>
<ListBox Width=”200″ Height=”300″
ItemsSource=”{Binding Source={StaticResource FavoriteColors},
XPath=/Colors/Color}”>
</ListBox>
</StackPanel>
III. Binding to Control
1.
<Window xmlns=”http://schemas.microsoft.com/winfx/2006/xaml/presentation“>
<Canvas>
<TextBox Name=”theTextBox” Text=”Hello” />
<TextBlock Canvas.Top=”25″>
<TextBlock.Text>
<Binding ElementName=”theTextBox” Path=”Text” />
</TextBlock.Text>
</TextBlock>
</Canvas>
</Window>
2.
<Window xmlns=”http://schemas.microsoft.com/winfx/2006/xaml/presentation“>
<Canvas>
<TextBox Name=”theTextBox” Text=”Hello” />
<TextBlock Canvas.Top=”25″
Text=”{Binding ElementName=theTextBox, Path=Text}” />
</Canvas>
</Window>
IX. Binding to ADO.NET
Similar to binding to object, create a dataset and return ds to DataContext.
Sample:
http://www.beacosta.com/Zips/18ThreeLevelMasterDetailADO.zip
http://www.beacosta.com/2006/03/how-do-i-bind-to-adonet.html
更多参考文章：
Windows Presentation Foundation Data Binding: Part 1
How do I bind to XML data in WPF?
WinFx中的数据绑定-基础篇