将组合框绑定到WPF中的另一个组合框 [英] binding combobox to another combobox in wpf

问题描述

我在wpf中有两个组合框，其中一个组合框看起来像这样:

I have two combo boxes in wpf one of the combo boxes looks like so:

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

我想知道如何将第二个combobox2绑定到特定汽车制造商列表中，并将其组合到combobox1中的选定项目.

I was wondering how you bind the second combobox2 to list specifc car makes to the selected item in combobox1.

如果选择了Peurgeut，则在组合框2中应该有一个列表:

If Peurgeut is selected then in combobox two there should be a list:

106
206
306 

或如果选择了宝马，则

4 series
5 series

依此类推

推荐答案

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

    <ComboBox Height="23" ItemsSource="{Binding Cars}" DisplayMemberPath="Name" HorizontalAlignment="Left" Margin="244,10,0,0" Name="comboBox1" VerticalAlignment="Top" Width="120"/>
    <ComboBox Height="23" Grid.Row="1" ItemsSource="{Binding SelectedItem.Series, ElementName=comboBox1}" HorizontalAlignment="Left" Margin="244,10,0,0" 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; }
}

我希望这会有所帮助.

这篇关于将组合框绑定到WPF中的另一个组合框的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！