treeview – Page 4 – Tarik Billa

Select TreeView Node on right click before displaying ContextMenu

December 30, 2022 by Tarik

Depending on the way the tree was populated, the sender and the e.Source values may vary. One of the possible solutions is to use e.OriginalSource and find TreeViewItem using the VisualTreeHelper: private void OnPreviewMouseRightButtonDown(object sender, MouseButtonEventArgs e) { TreeViewItem treeViewItem = VisualUpwardSearch(e.OriginalSource as DependencyObject); if (treeViewItem != null) { treeViewItem.Focus(); e.Handled = true; } } … Read more

Is there any publicly accessible JSON data source to test with real world data? [closed]

December 24, 2022 by Tarik

Twitter has a public API which returns JSON, for example – A GET request to: https://api.twitter.com/1/statuses/user_timeline.json?include_entities=true&include_rts=true&screen_name=mralexgray&count=1, EDIT: Removed due to twitter restricting their API with OAUTH requirements… {“errors”: [{“message”: “The Twitter REST API v1 is no longer active. Please migrate to API v1.1. https://dev.twitter.com/docs/api/1.1/overview.”, “code”: 68}]} Replacing it with a simple example of the Github … Read more

Data binding to SelectedItem in a WPF Treeview

October 5, 2022 by Tarik

I realise this has already had an answer accepted, but I put this together to solve the problem. It uses a similar idea to Delta’s solution, but without the need to subclass the TreeView: public class BindableSelectedItemBehavior : Behavior<TreeView> { #region SelectedItem Property public object SelectedItem { get { return (object)GetValue(SelectedItemProperty); } set { SetValue(SelectedItemProperty, … Read more