multi Datacontext wpf

Question

Who can explain to me how to use two different datacontext ?

this is my file.xaml.cs :

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();

        DataContext = new string[] { "Female", "Male", "Animal", "Safe", "Soft", "Hard", "Space", "Landscape", "Outside", "Inside",
        "City", "France", "Flower", "Sunset", "Sky", "Fireworks", "Spring", "Winter", "Summer", "Fall", "Christmas", "Halloween",
        "Ghost", "Demon", "Angel", "Watermelon", "Storm", "Waterfall", "Night", "Sun","Moon", "Dog", "Cat", "Food", "Cheese",
        "Kancolle", "IT", "UFO", "Travel", "Sport", "Nightmare"};
   }

and here my file.xaml :

<ScrollViewer HorizontalAlignment="Left" Height="170" VerticalAlignment="Top" Width="97" Margin="10,149,0,0">
        <ListBox ItemsSource="{Binding .}">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <CheckBox Content="{Binding Path=.}" />
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
    </ScrollViewer>

Everything work well here, but i would like add an second ScrollViewer exactly like the first one, but with another content. so the datacontexte need to be different for each of them.

thank you for giving me a little of your time.

As a note, it looks odd that the ListBox is inside a ScrollViewer. A ListBox already provides scrolling by a ScrollViewer in its ControlTemplate. — Clemens, Nov 10 '18 at 10:56

score 0 · Accepted Answer · answered Nov 10 '18 at 10:53

You don't need to set different DataContexts.

Create two collection properties in your MainWindow class and set the DataContext to the window instance.

public IEnumerable<string> Collection1 { get; }
public IEnumerable<string> Collection2 { get; }

public MainWindow()
{
    InitializeComponent();

    Collection1 = new string[] { ... }; 
    Collection2 = new string[] { ... }; 
    DataContext = this;
}

Bind the ListBox's ItemSource to the collection properties:

<ListBox ItemsSource="{Binding Collection1}" ...>
...
<ListBox ItemsSource="{Binding Collection2}" ...>

thank you for your help, it's a simple solution and very comprehenssible. — astrocurieux, Nov 10 '18 at 11:19

multi Datacontext wpf

1 Answers1