Treeview not updating when ObservableCollection changes

[Greg Harris]

Hi,

Maybe I am not understanding this correctly. I have a sfTreeView bound to an ObservableCollection in my ViewModel.

When I add a new item to the collection, the TreeView does not update.

I put both a ListView and the TreeView side by side and bound them both identically to the same collection. The Listview updates perfectly.

If the collection has triggered the PropertyChanged, shouldn't the tree show the new item? Why do they behave differently? Here are the two XAML blocks.

ItemsSource="{Binding TreeItems}"
SelectedItem="{Binding SelectedTreeViewItem, Mode=TwoWay}"
RowHeight="60"
SeparatorVisibility="None"
HasUnevenRows="false"
IsPullToRefreshEnabled="False"

VerticalOptions="FillAndExpand">










BackgroundColor="White"
SelectedItem="{Binding SelectedTreeViewItem, Mode=TwoWay}"
ItemsSource="{Binding TreeItems}"
ChildPropertyName="Songs"
IsAnimationEnabled="False"
AutoExpandMode="None"
ItemHeight="60"
VerticalOptions="FillAndExpand">

[Greg Harris]

Of course after hours of trying to figure it out, as soon as I posted I saw that I missed the NotificaitonSubscriptionMode="CollectionChanged" option.

It's working now.

Nevermind :)

[Subburaj Pandian Veluchamy]

Hi Greg,                     

       

Thank you for the update. We are happy that you resolved the mentioned issue at your end.

Please get in touch with us, if you would require any assistance. 

 

Regards,
Subburaj Pandian V