c# – 将组合框绑定到wpf中的另一个组合框

发布时间：2020-12-15 08:37:16 所属栏目：百科来源：网络整理

导读：我在wpf中有两个组合框,其中一个组合框看起来像这样： ComboBox Height="23" HorizontalAlignment="Left" Margin="244,10,0" Name="comboBox2" VerticalAlignment="Top" Width="120" ComboBoxItem Content="Peugeut" / ComboBoxItem Content="Ford" / ComboB

我在wpf中有两个组合框,其中一个组合框看起来像这样：

<ComboBox Height="23" HorizontalAlignment="Left" Margin="244,10,0" Name="comboBox2" VerticalAlignment="Top" Width="120">
                <ComboBoxItem Content="Peugeut" />
                <ComboBoxItem Content="Ford" />
                <ComboBoxItem Content="BMW" />
            </ComboBox>

我想知道如何绑定第二个combobox2以列出特定于carobox1中所选项目的carc.

如果Peurgeut被选中,那么在组合框2中应该有一个列表：

106
206
306

或者如果选择了宝马那么

4 series
5 series

等等

解决方法

<Grid>
    <Grid.RowDefinitions>
        <RowDefinition Height="50"/>
        <RowDefinition Height="50"/>
    </Grid.RowDefinitions>

    <ComboBox Height="23" ItemsSource="{Binding Cars}" DisplayMemberPath="Name" HorizontalAlignment="Left" Margin="244,0" Name="comboBox1" VerticalAlignment="Top" Width="120"/>
    <ComboBox Height="23" Grid.Row="1" ItemsSource="{Binding SelectedItem.Series,ElementName=comboBox1}" HorizontalAlignment="Left" Margin="244,0" Name="comboBox2" VerticalAlignment="Top" Width="120"/>

</Grid>

    public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        Cars = new ObservableCollection<Car>();
        Cars.Add(new Car() { Name = "Peugeut",Series = new ObservableCollection<string>() { "106","206","306" } });
        Cars.Add(new Car() { Name = "Ford",Series = new ObservableCollection<string>() { "406","506","606" } });
        Cars.Add(new Car() { Name = "BMW",Series = new ObservableCollection<string>() { "706","806","906" } });
        DataContext = this;

    }

    public ObservableCollection<Car> Cars { get; set; }

}
public class Car
{
    public string Name { get; set; }
    public ObservableCollection<string> Series { get; set; }
}

我希望这将有所帮助.

（编辑：李大同）

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