我有一个TreeView
在运行时从 XML 文件填充的 WPF。我单击一个按钮并FileDialog
出现一个框,然后选择一个 XML 文件。然后将 XML 文件加载到TreeView
. 我已经使用 aXmlDataProvider
和 some HierarchicalDataTemplate
s 来加载 XML。
我已经使用 TreeView 添加了一个操作处理程序,但是当我选择该 TreeView 的一个项目时,我找不到该项目的任何引用。我只找到第一个元素的引用。
我该如何解决这个问题?
XAML 是:
<Window x:Class="Demo2.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="600" Width="800">
<Window.Resources>
<XmlDataProvider x:Key="MEIInformation" XPath="/MEI" />
<HierarchicalDataTemplate DataType="Case" ItemsSource="{Binding}">
<TextBlock Text="{Binding XPath=@Name}"></TextBlock>
</HierarchicalDataTemplate>
<HierarchicalDataTemplate DataType="Phase" ItemsSource="{Binding}">
<TextBlock Text="{Binding XPath=@Name}"></TextBlock>
</HierarchicalDataTemplate>
<HierarchicalDataTemplate DataType="Trigger" ItemsSource="{Binding}">
<TextBlock Text="{Binding XPath=@Name}"></TextBlock>
</HierarchicalDataTemplate>
</Window.Resources>
<Grid>
<ToolBarTray>
<ToolBar>
<Button ToolTip="Open Test Suite" Click="OpenTestSuite">
<Image Source="Icons/open.png"></Image>
</Button>
</ToolBar>
</ToolBarTray>
<TreeView x:Name="trv" FontSize="14" Height="518" HorizontalAlignment="Left" Margin="6,31,0,0" VerticalAlignment="Top" Width="431">
<TreeViewItem ItemsSource="{Binding Source={StaticResource MEIInformation}, XPath=*}" Header="Suites"></TreeViewItem>
</TreeView>
</Grid>
</Window>
代码片段是:
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
this.trv.MouseRightButtonUp+=new MouseButtonEventHandler(DoSomething);
}
private void OpenTestSuite(object sender, RoutedEventArgs e)
{
XmlDocument xmlDocument = new XmlDocument();
OpenFileDialog open = new OpenFileDialog();
open.Filter = "XML Files (*.xml)|*.xml";
if (open.ShowDialog() == true)
{
xmlDocument.Load(open.FileName);
XmlDataProvider dataProvider = this.FindResource("MEIInformation") as XmlDataProvider;
dataProvider.Document = xmlDocument;
}
}
private void DoSomething(object sender, MouseEventArgs e)
{
MessageBox.Show("Do Something in TreeView!");
TreeViewItem childItem = e.Source as TreeViewItem;
if (childItem != null)
{
MessageBox.Show(childItem.Header.ToString()); // or MessageBox.Show(childItem.toString);
childItem.IsSelected = true;
}
else
MessageBox.Show("No Selected Item!");
}
}
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
<MEI>
<Case Name="Jean Price">
<Phase Name="January">
<Trigger Name="Order # JAN001"></Trigger>
<Trigger Name="Order # JAN002"></Trigger>
</Phase>
<Phase Name="February">
<Trigger Name="Order # FEB001"></Trigger>
</Phase>
</Case>
<Case Name="John P Grant">
<Phase Name="April">
<Trigger Name="Order # APR001"></Trigger>
<!-- ... -->
</MEI>
我只想获得该项目的参考,以便我可以在该项目之后添加新项目。
@Mart我已经像这样更改了xaml上的树视图......(添加了SelectedItemChanged =“DoSomething”)......
<TreeView SelectedItemChanged="DoSomething"....../>
而c#代码现在......
private void DoSomething(object sender, EventArgs e)
{
MessageBox.Show("Do Something in TreeView!");
TreeViewItem childItem = sender as TreeViewItem;
if (childItem != null)
{
MessageBox.Show(childItem.Header.ToString());
childItem.IsSelected = true;
MessageBox.Show("It Works!");
}
else
MessageBox.Show("No Selected Item!");
}
但根本没有运气。而且我还没有理解你的 UIElement 建议......:(