我研究了Treeview绑定(bind)的所有示例,
但仍然无法从 View 模型将其绑定(bind)到Treeview。
请让我知道我在这里想念的东西。
//这是我的类,需要在UI中以树形 View 生成。
public class Station
{
public string Name { get; set; } // Header of Treeview
public ObservableCollection<AnalogToDigital> Adc { get; set; }
public ObservableCollection<DigitalToAnalog> Dac { get; set; }
public ObservableCollection<AuxilaryInputs> AuxInput { get; set; }
}
//ADC channel Details
public class AnalogToDigital
{
public string InternalName { get; set; }
}
//DAC channel details
public class DigitalToAnalog
{
public string InternalName { get; set; }
}
//Input output pin details
public class AuxilaryInputs
{
public string InternalName { get; set; }
}
//View.xaml:treeview xaml代码:
<TreeView Name="StationTree" HorizontalAlignment="Left" Height="326.04" Margin="10,10,0,0"
VerticalAlignment="Top" Width="188" ItemsSource="{Binding StationTree}">
<TreeView.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding StationTree}">
<TreeViewItem Header="{Binding Name}"/>
<HierarchicalDataTemplate.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding StationTree.Adc}">
<TreeViewItem Header="{Binding StationTree.Adc.InternalName}"/>
</HierarchicalDataTemplate>
</HierarchicalDataTemplate.ItemTemplate>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>
//ViewModel:我在这里使用mvvmlight
public class MainViewModel : ViewModelBase
{
/// <summary>
/// Initializes a new instance of the MainViewModel class.
/// </summary>
public MainViewModel()
{
// Move it to business layer
StationXmlOperation stRead = new StationXmlOperation();
StationTree = (Station)stRead.Read(@"C:\Station.xml");
}
private string _name;
private Station _stationTree;
public Station StationTree
{
get { return _stationTree; }
set
{
_stationTree = value;
RaisePropertyChanged(() => StationTree);
}
}
}
//文件后面的代码:View.xaml.cs
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
var viewModel = new MainViewModel();
this.DataContext = viewModel;
//this.StationTree.DataContext = viewModel.StationTree;
this.StationTree.Items.Add(viewModel.StationTree);
}
}
//XML文件:Station.xml
<StationDetails>
<Station id="1" Name="FirstStation">
<ADCs>
<ADC id="1" InternalName="ADC1" ></ADC>
<ADC id="1" InternalName="ADC2" ></ADC>
</ADCs>
<DACs>
<DAC id="1" InternalName="DAC1" ></DAC>
<DAC id="1" InternalName="DAC2" ></DAC>
</DACs>
<IOs>
<IO id="1" InternalName="IO1" ></IO>
</IOs>
</Station>
</StationDetails>
//上面的对象层次结构期望的Treeview是
Name
->ADC
-->InternalName
->DAC
-->InternalName
->AuxInput
-->InternalName
当前代码仅显示“FirstStation”。
请帮助我,我是第一次使用Treeview。
最佳答案
我认为您的方法中缺少xpath.xpath创建HDT
<HierarchicalDataTemplate x:Key="NodeTemplate">
<HierarchicalDataTemplate.ItemsSource>
<Binding XPath="child::*" />
</HierarchicalDataTemplate.ItemsSource>
<TextBlock Text="{Binding Path=Name}" />
</HierarchicalDataTemplate>
请遵循this,this,this和this来了解使用XML数据的Treeview
希望这可以帮助!!!
关于wpf - 树 View 绑定(bind)到 View 模型不起作用,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/27729279/