我在wpf中有两个组合框,其中一个组合框如下所示:
<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>
我想知道你如何将第二个combobox2绑定到listcop1中的所选项目列表特定的汽车。
如果选择了Peurgeut,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
4 series
5 series
等等
答案 0 :(得分:7)
<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。
答案 1 :(得分:1)
除非您查看数据,否则我认为您不能只使用XAML。但是,如果您创建了一个用于绑定组合框的类,则可以使用类似以下内容的类:
public class CarMake
{
public string Make {get; set;}
public List<string> Models {get; set;}
}
然后在你的第一个组合框中,只需绑定一个List实例并填充信息,然后绑定第二个组合框,如:
<ComboBox ItemsSource="{Binding ElementName=FirstComboBox, Path=SelectedItem.Models}" ></ComboBox>
那应该让你去......
答案 2 :(得分:0)
当用户选择ComboBox1项目时,尝试以编程方式添加方框2中的项目。
if (combobox1.SelectedText == "Peurgeut")
{
box2.Items.Add("106");
box2.Items.Add("206");
box2.Items.Add("306");
}