Question

我有一些来自python脚本的数据集，我希望使用WPF进行可视化。我的布局由多个动态生成的ListBox组成（通过按下＆＃39; +＆＃39;按钮添加一个新的：

我设法将ListBoxes本身绑定到ObservableCollection并添加新元素工作正常。但是，我无法找到如何使用值填充这些ListBox？（假设值是列表中的字符串或简单的dicts）。我认为它需要在我的HDBox类中完成，但我不知道如何从该类中访问XAML元素等。

XAML：

<Window 
   xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
   xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
   Title="WpfApplication1" Height="300" Width="500">
<Grid>
    <Grid.RowDefinitions>
        <RowDefinition Height="30px"/>
        <RowDefinition Height="*"/>
    </Grid.RowDefinitions>
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="*"/>
        <ColumnDefinition Width="25px"/>
    </Grid.ColumnDefinitions>
    <StackPanel Grid.Row="1" Orientation="Horizontal" Margin="0,0,0,10" Grid.Column="0" >
        <ItemsControl Name="stHDBox">
            <ItemsControl.ItemTemplate >
                <DataTemplate>
                    <DockPanel HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Width="Auto">
                        <ListBox Name="roomEntries" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" MinWidth="200">
                            <ListBox.ItemTemplate>
                                <DataTemplate>
                                    <TextBlock Text="{Binding Entry}" />
                                </DataTemplate>
                            </ListBox.ItemTemplate>
                        </ListBox>
                    </DockPanel>
                </DataTemplate>
            </ItemsControl.ItemTemplate>
            <ItemsControl.ItemsPanel>
                <ItemsPanelTemplate>
                    <StackPanel Orientation="Horizontal"/>
                </ItemsPanelTemplate>
            </ItemsControl.ItemsPanel>
        </ItemsControl>
    </StackPanel>
    <Button x:Name="AddHDButton" Content="+" Margin="0,0,0,10" Grid.Row="1" Click="AddHDButton_Click" HorizontalAlignment="Right" Width="24" Grid.Column="1" />
</Grid>
</Window>

Python代码：

import wpf
from System.Windows import Application, Window
from System.Collections.ObjectModel import ObservableCollection

class HDBox:
    index = 0
    def __init__(self):
        # Not sure about that part, doesn't seem to work
        rooms = ObservableCollection[type("")]()
        self.roomEntries.ItemsSource = rooms

class MyWindow(Window):
    def __init__(self):
        # Create 1 HDBox by default
        self.hDBoxes = ObservableCollection[type(HDBox)]()
        self.hDBoxes.Add(HDBox)
        self.hDBoxes[0].index = 0
        wpf.LoadComponent(self, 'WpfApplication1.xaml')
        self.stHDBox.ItemsSource = self.hDBoxes

    # '+' Button to add new boxes
    def AddHDButton_Click(self, sender, e):
        i = len(self.hDBoxes)
        self.hDBoxes.Add(HDBox)
        self.hDBoxes[i].index = i

if __name__ == '__main__':
    Application().Run(MyWindow())

修改由于正在进行一些编辑，我在这里提供了当前的python代码：

import wpf
from System.Windows import Application, Window
from System.Collections.ObjectModel import ObservableCollection

class HDBox:
    index = 0
    def __init__(self):
        self.prop = ObservableCollection[type("")]()
        self.prop.Add("test")

    @property
    def YourProperty(self):
        return self.prop

    @YourProperty.getter
    def YourPropertyGetter(self):
        return self.prop

class MyWindow(Window):
    def __init__(self):
        # Create 1 HDBox by default
        self.hDBoxes = ObservableCollection[type(HDBox)]()
        self.hDBoxes.Add(HDBox)
        self.hDBoxes[0].index = 0
        wpf.LoadComponent(self, 'WpfApplication1.xaml')
        self.stHDBox.ItemsSource = self.hDBoxes

    # '+' Button to add new boxes
    def AddHDButton_Click(self, sender, e):
        i = len(self.hDBoxes)
        self.hDBoxes.Add(HDBox)
        self.hDBoxes[i].index = i


if __name__ == '__main__':
    Application().Run(MyWindow())

Answer 1

HDBox类应具有ObservableCollection<T>属性，您可以将ItemsSource中ListBox的{{1}}属性绑定到：

ItemTemplate

然后，您可以通过向相应的<ListBox Name="roomEntries" ItemsSource="{Binding YourProperty}" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" MinWidth="200"> <ListBox.ItemTemplate> <DataTemplate> <TextBlock Text="{Binding Entry}" /> </DataTemplate> </ListBox.ItemTemplate> </ListBox>集合属性添加项目来为每个ListBox填充项目。

在IronPython中填充动态生成的ListBox

1 个答案: