WPF绑定XML数据源

WPF在绑定XML时会有一些麻烦，经常是不显示列表内容，但是内容项却是存在，这说明配置XAML信息有误，见图例效果，绑定XML数据源，且能实现分组。

1.XML数据源，其中xmlns是命名空间，后面代码中会将其改成前缀名sb使用

Code:

1. <?xmlversion="1.0"encoding="utf-8"?>
2. <Studentsxmlns="http://sonny.com">
3. <StudentStudentName="李金香"Sex="女"ClassID="4"/>
4. <StudentStudentName="张亮"Sex="男"ClassID="7"/>
5. <StudentStudentName="张利华"Sex="女"ClassID="9"/>
6. <StudentStudentName="李頔飞"Sex="男"ClassID="10"/>
7. <StudentStudentName="侯潇楠"Sex="女"ClassID="11"/>
8. <StudentStudentName="杨超"Sex="男"ClassID="1"/>
9. <StudentStudentName="陈磊"Sex="男"ClassID="2"/>
10. <StudentStudentName="张涛"Sex="男"ClassID="3"/>
11. <StudentStudentName="周立华"Sex="女"ClassID="4"/>
12. <StudentStudentName="陈荔"Sex="女"ClassID="5"/>
13. <StudentStudentName="赵欣环"Sex="男"ClassID="7"/>
14. <StudentStudentName="黄博"Sex="男"ClassID="9"/>
15. <StudentStudentName="苏三东"Sex="男"ClassID="10"/>
16. <StudentStudentName="吴佳嵘"Sex="男"ClassID="11"/>
17. <StudentStudentName="王立岩"Sex="女"ClassID="1"/>
18. <StudentStudentName="季刚"Sex="女"ClassID="2"/>
19. <StudentStudentName="李文达"Sex="男"ClassID="3"/>
20. <StudentStudentName="高爱文"Sex="男"ClassID="4"/>
21. <StudentStudentName="杨过"Sex="男"ClassID="9"/>
22. <StudentStudentName="黄蓉"Sex="女"ClassID="3"/>
23. <StudentStudentName="小新"Sex="男"ClassID="6"/>
24. </Students>

Code:

1. <Windowx:Class="Demo14_BindingFromXML.MainWindow"
2. xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
3. xmlns:sys="clr-namespace:System;assembly=mscorlib"
4. xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
5. xmlns:xm="clr-namespace:System.Xml;assembly=System.Xml"
6. xmlns:local="clr-namespace:Demo14_BindingFromXML"
7. Title="MainWindow"Height="333"Width="496">
8. <Window.Resources>
9. <XmlDataProviderx:Key="stuList"Source="Students.xml"
10. XPath="/sb:Students/sb:Student">
11. <XmlDataProvider.XmlNamespaceManager>
12. <XmlNamespaceMappingCollection>
13. <XmlNamespaceMappingUri="http://sonny.com"Prefix="sb"/>
14. </XmlNamespaceMappingCollection>
15. </XmlDataProvider.XmlNamespaceManager>
16. </XmlDataProvider>
17. <DataTemplatex:Key="showStudentTemplate">
18. <TextBlock>
19. <TextBlockText="{BindingXPath=@StudentName}"/>(<TextBlockText="{BindingXPath=@Sex}"/>:<TextBlockText="{BindingXPath=@ClassID}"/>)
20. </TextBlock>
21. </DataTemplate>
22. </Window.Resources>
23. <GridMargin="5"DataContext="{StaticResourcestuList}">
24. <Grid.Resources>
25. <StyleTargetType="TextBlock">
26. <SetterProperty="Margin"Value="5"/>
27. <SetterProperty="VerticalAlignment"Value="Center"/>
28. </Style>
29. <StyleTargetType="TextBox">
30. <SetterProperty="Margin"Value="5"/>
31. <SetterProperty="VerticalAlignment"Value="Center"/>
32. </Style>
33. <StyleTargetType="ListBox">
34. <SetterProperty="Margin"Value="5"/>
35. </Style>
36. <StyleTargetType="Button">
37. <SetterProperty="Margin"Value="5"/>
38. <SetterProperty="Width"Value="65"/>
39. <SetterProperty="Height"Value="25"/>
40. <SetterProperty="HorizontalAlignment"Value="Left"/>
41. </Style>
42. </Grid.Resources>
43. <Grid.RowDefinitions>
44. <RowDefinition/>
45. <RowDefinitionHeight="Auto"/>
46. <RowDefinitionHeight="Auto"/>
47. <RowDefinitionHeight="Auto"/>
48. <RowDefinitionHeight="Auto"/>
49. </Grid.RowDefinitions>
50. <Grid.ColumnDefinitions>
51. <ColumnDefinitionWidth="80"/>
52. <ColumnDefinition/>
53. </Grid.ColumnDefinitions>
54. <TextBlockText="List:"Grid.Row="0"Grid.Column="0"/>
55. <TextBlockText="Name:"Grid.Row="1"Grid.Column="0"/>
56. <TextBlockText="Gender:"Grid.Row="2"Grid.Column="0"/>
57. <TextBlockText="Class:"Grid.Row="3"Grid.Column="0"/>
58. <ListBoxGrid.Row="0"Grid.Column="1"ItemsSource="{Binding}"IsSynchronizedWithCurrentItem="True"
59. ItemTemplate="{StaticResourceshowStudentTemplate}">
60. <ListBox.GroupStyle>
61. <GroupStyle>
62. <GroupStyle.HeaderTemplate>
63. <DataTemplate>
64. <TextBlockBackground="Black"Foreground="White"FontWeight="Bold">
65. <TextBlockText="{BindingXPath=@ClassID}"/>
66. (<TextBlockText="{BindingItemCount}"/>)
67. </TextBlock>
68. </DataTemplate>
69. </GroupStyle.HeaderTemplate>
70. </GroupStyle>
71. </ListBox.GroupStyle>
72. </ListBox>
73. <TextBoxGrid.Row="1"Grid.Column="1"Name="txtName"Text="{BindingXPath=@StudentName}"/>
74. <TextBoxGrid.Row="2"Grid.Column="1"Name="txtGender"Text="{BindingXPath=@Sex}"/>
75. <TextBoxGrid.Row="3"Grid.Column="1"Name="txtClass"Text="{BindingXPath=@ClassID}"/>
76. <StackPanelOrientation="Horizontal"Grid.Row="4"Grid.Column="1">
77. <ButtonContent="Group"Name="cmdGroup"Click="cmdGroup_Click"/>
78. </StackPanel>
80. </Grid>
81. </Window>

Code:

1. usingSystem.Windows;
2. usingSystem.Windows.Data;
3. usingSystem.ComponentModel;
5. namespaceDemo14_BindingFromXML{
6. ///<summary>
7. ///MainWindow.xaml的交互逻辑
8. ///</summary>
9. publicpartialclassMainWindow:Window{
10. publicMainWindow(){
11. InitializeComponent();
12. }
14. privatevoidcmdGroup_Click(objectsender,RoutedEventArgse){
15. ICollectionViewview=GetDefaultView();
16. if(view.GroupDescriptions.Count==0){
17. view.GroupDescriptions.Add(newPropertyGroupDescription("@ClassID"));
18. }else{
19. view.GroupDescriptions.Clear();
20. }
21. }
23. privateICollectionViewGetDefaultView(){
24. DataSourceProviderprovider=(DataSourceProvider)this.FindResource("stuList");
25. varcollection=provider.Data;
26. ICollectionViewview=CollectionViewSource.GetDefaultView(collection);
27. returnview;
28. }
29. }
30. }

注意：
1.DataTemplate定义显示方式，不再使用DataType属性，且绑定使用XPath，绑定的xml节点为xml的属性，故采用@属性名
2.在后置代码中获取数据源时

DataSourceProvider provider = (DataSourceProvider)this.FindResource("stuList");
var collection = provider.Data;

collection是MS.Internal.Data.XmlDataCollection，在PresentationFramework.dll程序集中，但是该命名空间下却无法看到该命名空间，该类声明是internal class XmlDataCollection，只能在它的命名空间中使用，所以外部无法使用。故我采用了var定义。

源代码下载：
http://u.163.com/1zTgkhv9
提取码：ojt73ata