creating custom itemscontrol

Question

I\'m trying to create a custom control derived from ItemsControl. The ItemsControl is initialized with items, but they are not shown.

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Answer 1

You need to set the ItemsSource. So, for example, you could add ItemsSource = Checkers; below the last Checkers Add line. Even though you're trying to set the ItemsSource to Checkers in the style, I think it would be easier if you set in the control class. Just my two cents, though.

Here's an example of the PipeControl class:

public class PipeControl : ItemsControl
{
    public ObservableCollection Checkers { get; set; }
    static PipeControl()
    {
        DefaultStyleKeyProperty.OverrideMetadata(typeof(PipeControl), new FrameworkPropertyMetadata(typeof(PipeControl)));
    }
    public PipeControl()
    {
        Checkers = new ObservableCollection();
        Checkers.Add(new Checker());
        Checkers.Add(new Checker());
        Checkers.Add(new Checker());
        Checkers.Add(new Checker());
        Checkers.Add(new Checker());
        ItemsSource = Checkers;
    }
}

You also need an ItemsPresenter in your ControlTemplate and your Ellipse needs a width and height. Here's an updated style for you: