WPF Binding Listbox into ListView (different Source / datacontext)-CodePudding

i have these two classes.

classes:

public class OuterList
{
    public string Process { get; set; }

    public OuterList(string _process)
    {
        Process = _process;
    }
}

public class InnerList
{
    public string Order { get; set; }
    public string Product { get; set; }

    public InnerList(string _order, string _product)
    {
        Order = _order;
        Product = _product;
    }
}

And i will get a Listbox in a ListView.

XAML:

<ListView x:Name="Container" ItemsSource="{Binding OuterList}">
    <ListView.ItemTemplate>
        <DataTemplate>
            <StackPanel>
                <TextBlock Margin="5" FontSize="24" FontFamily="Arial" Background="Red" Text="{Binding Process}"/>

                <ListBox x:Name="Orders" ItemsSource="{Binding RelativeSource={RelativeSource AncestorType=Grid}, Path=DataContext.InnerList}">
                    <ListBox.ItemTemplate>
                        <DataTemplate>
                            <StackPanel>
                                <TextBlock Text="{Binding Product}"/>
                                <TextBlock Text="{Binding Order}"/>
                            </StackPanel>
                        </DataTemplate>
                    </ListBox.ItemTemplate>
                </ListBox>

            </StackPanel>
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>

Code:

public partial class MainWindow : Window
{
        ObservableCollection<OuterList> myContainers = new();
        ObservableCollection<InnerList> myItems = new();

    public MainWindow()
    {
        
        InitializeComponent();

        myContainers.Add(new OuterList("Start"));
        myContainers.Add(new OuterList("Middle"));
        myContainers.Add(new OuterList("End"));
        Container.ItemsSource = myContainers;

        myItems.Add(new InnerList("34545","SD5"));
        myItems.Add(new InnerList("45654", "SD5"));
        myItems.Add(new InnerList("65775", "SD5"));
        myItems.Add(new InnerList("78677", "SD5"));
        myItems.Add(new InnerList("35887", "SD5"));
        Orders.ItemsSource = myItems;  //<- The name "Orders" does not exist in the current context.

    }
}

All the Content of the OuterList will shown, but no Item from InnerList

How can i add Content from two different ItemSources? Or, what am I doing wrong?

Got an issue in Code: The name "Orders" does not exist in the current context.

Thanks for you Help!

CodePudding user response：

Because your DataContext is incorrect.

Assuming the Grid that wraps both of them its DataContext contains Outer and Inner

You can do this:

<Grid>
    <ListView x:Name="Container" ItemsSource="{Binding OuterList}">
        <ListView.ItemTemplate>
            <DataTemplate>
                <StackPanel>
                    <TextBlock Margin="5" FontSize="24" FontFamily="Arial" Background="Red" Text="{Binding Process}"/>

                    <ListBox x:Name="Orders" ItemsSource="{Binding RelativeSource={RelativeSource AncestorType=Grid}, Path=DataContext.InnerList}">
                        <ListBox.ItemTemplate>
                            <DataTemplate>
                                <StackPanel>
                                    <TextBlock Text="{Binding Product}"/>
                                    <TextBlock Text="{Binding Order}"/>
                                </StackPanel>
                            </DataTemplate>
                        </ListBox.ItemTemplate>
                    </ListBox>

                </StackPanel>
            </DataTemplate>
        </ListView.ItemTemplate>
    </ListView>
</Grid>

CodePudding user response：

Thank You. But i get an issue the name "Orders" does not exist in the current context. I Edit the Question and add my Code.