private static bool TryBindSelectedItems(Type viewModelType,
string path,
PropertyInfo property,
FrameworkElement element,
ElementConvention convention,
IList selectedItems)
{
var parentApplied = ConventionManager.GetElementConvention(typeof(Selector))
.ApplyBinding(viewModelType, path, property, element, convention);
var index = path.LastIndexOf('.');
index = index == -1 ? 0 : index + 1;
var baseName = path.Substring(index);
var propertyInfo = viewModelType.GetPropertyCaseInsensitive("Selected" + baseName);
if (propertyInfo == null || !typeof(IList).IsAssignableFrom(propertyInfo.PropertyType))
{
return(parentApplied);
}
var target = (IList)propertyInfo.GetValue(element.DataContext, null);
CollectionHelper.Bind(selectedItems, target);
return(true);
}
public void BindTwoObservableCollections()
{
var c1 = new ObservableCollection <int>();
var c2 = new ObservableCollection <int>();
c1.Add(1);
Assert.AreEqual(0, c2.Count);
var subscription = CollectionHelper.Bind(c1, c2);
c1.Add(2);
Assert.AreEqual(1, c2.Count);
Assert.AreEqual(2, c2[0]);
c2.Add(3);
Assert.AreEqual(3, c1.Count);
Assert.AreEqual(3, c1[2]);
c2.Remove(2);
Assert.AreEqual(2, c1.Count);
subscription.Dispose();
c2.Remove(3);
Assert.AreEqual(2, c1.Count);
}
