binding ListView to winmd IObservableVector / IList in C#

Question

I am trying to bind to a component built in C# - one of the class members implements IObservableVector:

public sealed class Class1
    {
        public Class1() {...}
        public String MyString { get { ...} set {...} }
        public IObservableVector<object> MyVector
        {
            get
            {
                return (IObservableVector<object>)this._myObservableVector;
            }
        }
        private MyObservableVector<object> _myObservableVector;
    }

My HTML template:

    <div>
        <h2 data-win-bind="textContent: myString WinJS.Binding.oneTime"></h2>
        <h2 data-win-bind="textContent: myVector WinJS.Binding.oneTime"></h2>
        <div data-win-control="WinJS.UI.ListView" data-win-bind="itemDataSource: myVector WinJS.Binding.oneTime" ></div>
</div>

and the javascript code:

    var bindingSource = null;

    app.onactivated = function (args) {
    ...
            bindingSource = WindowsRuntimeComponent.CSharp.Class1();
            args.setPromise(WinJS.UI.processAll().then(function () {
                WinJS.Binding.processAll(document.rootElement, bindingSource);
            })

The content in the first two items is correctly databound, but the ListView is empty. What am I missing? I've tried all sorts of permutations like switching to an ObservableCollection<> and sending back an IList<>, creating a bindable proxy via WinJS.Binding.as(bindingSource), etc.

I found a couple of related forum posts but neither provided the insight I was looking for.
http://social.msdn.microsoft.com/Forums/en-US/winappswithhtml5/thread/f53f4a19-6a32-41af-8933-2d115f2bcd24
http://social.msdn.microsoft.com/Forums/en-US/winappswithhtml5/thread/38387326-8d81-48d1-8f85-023b9ebf2382

- Tom

Answer 1

Hi Tom,

You don't have anything inside your ListView.  You have to have a template or custom renderer to be show what you are binding.

See the quickstart for ListView for an intro of how this all ties together:

http://msdn.microsoft.com/en-us/library/windows/apps/hh465496.aspx

-Jeff

---

Jeff Sanders (MSFT)