我有 webservice asmx,还有类:
Country
public string Name {get;set;}
public string Code {get;set;}
public List<Area> Areas {get;set;}
Area
public string Name {get;set;}
public string Code {get;set;}
public List<Regions> Provinces {get;set;}
Provinces
public string Name {get;set;}
public string Code {get;set;}
我将它绑定(bind)到 mz TreeView WPF:
Country[] items = new MyService().GetListOfCountries();
structureTree.ItemsSource = items;
myTree 代码:
<UserControl x:Class="ObjectsAndZonesSimpleTree"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
<Grid>
<StackPanel Name="stackPanel1">
<GroupBox Header="Choose" Height="354" Name="groupBox1" Width="Auto">
<TreeView Name="structureTree" SelectedItemChanged="structureTree_SelectedItemChanged" Grid.Row="0" Grid.Column="0" ItemsSource="{Binding}" Height="334" ScrollViewer.VerticalScrollBarVisibility="Visible" ScrollViewer.HorizontalScrollBarVisibility="Visible" Width="Auto" PreviewMouseRightButtonUp="structureTree_PreviewMouseRightButtonUp" FontFamily="Verdana" FontSize="12" BorderThickness="1" MinHeight="0" Padding="1" Cursor="Hand" Margin="-1">
<TreeView.Resources>
<HierarchicalDataTemplate DataType="{x:Type MyService:Country}"
ItemsSource="{Binding Path=ListOfRegions}">
<StackPanel Orientation="Horizontal">
<TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text="{Binding Path=Name}"/>
</StackPanel>
</HierarchicalDataTemplate>
<HierarchicalDataTemplate DataType="{x:Type MyService:Region}"
ItemsSource="{Binding Path=Provinces}">
<StackPanel Orientation="Horizontal">
<TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text="{Binding Path=Name}"/>
</StackPanel>
</HierarchicalDataTemplate>
<DataTemplate DataType="{x:Type MyService:Province}"
ItemsSource="{Binding Path=ListOfCities}">
<StackPanel Orientation="Horizontal">
<TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text="{Binding Path=Name}"/>
</StackPanel>
</DataTemplate>
</TreeView.Resources>
</TreeView>
</GroupBox>
</StackPanel>
</Grid>
</UserControl>
这给了我空值:
private void structureTree_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
{
TreeViewItem treeViewItem = structureTree.SelectedItem as TreeViewItem;
}
最佳答案
SelectedItem 实际上将包含国家、地区或地区(或空值)。如果您真的想要 TreeViewItem,可以执行 structureTree.ItemContainerGenerator.ContainerFromItem(structureTree.SelectedItem)
。
关于c# - 无法在 wpf 中将 treeviewitem 转换为 treeviewitem,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/2929140/