Question

My requirement is that I need to bind a user control to a Property of an object,whose list is enclosed within a different object and the list of the second object is set as the ItemsSource.

Example

class A
{
    public string Name
    {
        get; set;
    }
}

class B
{
    public List<A> aObjectList;
}

List<B> bObjectsList = new List<B>();    
userControl.ItemSource = bObjectsList;
userControl.Content = new Binding("Name");

How do I do the above thing???

Answer 1

First off, if you want to allow the GUI to update itself when something changes, you should use an implementation of NotifyCollectionChanged, for instance the ObservableCollection<T>.

The XAML would look like this:

   <ItemsControl Name="userControl">
        <ItemsControl.ItemTemplate>
            <DataTemplate>
                <ItemsControl ItemsSource="{Binding aObjectsList}">
                    <ItemsControl.ItemTemplate>
                        <DataTemplate>
                            <TextBlock Text="{Binding Name}" />
                        </DataTemplate>
                    </ItemsControl.ItemTemplate>
                </ItemsControl>
            </DataTemplate>
        </ItemsControl.ItemTemplate>
    </ItemsControl>

That is, assuming that your UserControl is an ItemsControl. Then in the code do:

 userControl.ItemsSource = bObjectsList;

A good idea would be to look at the MVVM Pattern. This will provide a more structured solution, allowing things like modification notices etc.

Here is a good article to get you started.