public void TreeViewItemSourceResetRecreateItems()
{
RunOnUIThread.Execute(() =>
{
ExtendedObservableCollection <TreeViewItemSource> items
= new ExtendedObservableCollection <TreeViewItemSource>();
TreeViewItemSource item1 = new TreeViewItemSource()
{
Content = "item1"
};
TreeViewItemSource item2 = new TreeViewItemSource()
{
Content = "item2"
};
TreeViewItemSource item3 = new TreeViewItemSource()
{
Content = "item3"
};
items.Add(item1);
items.Add(item2);
items.Add(item3);
var treeView = new TreeView();
treeView.ItemsSource = items;
Verify.AreEqual(treeView.RootNodes.Count, 3);
Verify.AreEqual(treeView.RootNodes[0].Content as TreeViewItemSource, items[0]);
List <TreeViewItemSource> newItems = new List <TreeViewItemSource>();
TreeViewItemSource item4 = new TreeViewItemSource()
{
Content = "item4"
};
TreeViewItemSource item5 = new TreeViewItemSource()
{
Content = "item5"
};
newItems.Add(item4);
newItems.Add(item5);
items.ReplaceAll(newItems);
Verify.AreEqual(treeView.RootNodes.Count, 2);
Verify.AreEqual(treeView.RootNodes[0].Content as TreeViewItemSource, items[0]);
});
}