Completed
Last Updated: 19 Feb 2020 16:03 by ADMIN
Release R1 2020 SP1
Created by: Cleanwatts
Comments: 0
Category: TreeView
Type: Bug Report
12
Currently if the TreeView has deeper hierarchy or items with longer text, the end user will not be able to scroll horizontally.
Completed
Last Updated: 19 Feb 2020 16:04 by ADMIN
Release R1 2020 SP1
Created by: Safan
Comments: 0
Category: TreeView
Type: Bug Report
11
When you have longer text shown in TreeView items and it is wrapped in 2 or 3 rows, the text is clipped incorrectly.
Completed
Last Updated: 28 Aug 2019 10:14 by ADMIN
Release 2019.2.708 (R2 2019 minor release)
When there is custom template applied that hosts multiple rows of UI components with total height greater than 44, the template is not measured correctly, leading to wrong visualization.
Completed
Last Updated: 15 Jan 2020 12:10 by ADMIN
Release R1 2020
When you have custom ItemTemplates defined with different height, scrolling up through the items causes flickering, also you cannot scroll down to display all the items.
Declined
Last Updated: 06 Jan 2020 10:00 by ADMIN
Created by: Bruce
Comments: 5
Category: TreeView
Type: Bug Report
3

The documentation notes that the TreeView should have its items default as IsExpanded=False, however, everything is expanded when I start my TreeView. This also includes the situation when I have a TreeView with a custom template (provided by the excellent people at Telerik, for dealing with cutoff expander icon issue!) and if I try to set Expanded explicitly to False via the template and viewmodel.

This seems to be pretty basic and I have to wonder if I'm not doing something correctly.

Thanks. 

Unplanned
Last Updated: 11 Mar 2024 07:15 by ADMIN
Calling CollapseAll() on a RadTreeView after changing its ItemsSource causes an Exception on iOS.

Objective-C exception is thrown.  Name: NSInternalInconsistencyException Reason: attempt to delete item 9 from section 0 which only contains 8 items before the update

On Android, this works as expected.
Completed
Last Updated: 23 Sep 2019 18:31 by ADMIN
Release R3 2019
When the custom ItemTemplate sets bigger value of its Height e.g. more than 44 pixels, the content of the UITreeViewCell is not sized correctly. Only the cell gets the correct value.
Unplanned
Last Updated: 14 Dec 2022 11:00 by ADMIN

All parts of the TreeViewItem (indicator, text, checkbox) are defined as one big template. Therefore customization of only one part of the template still requires retemplating the whole item. 

When retemplating is applied to the treeviewitem and  20+ children in the nodes are loaded, the result is as follow: If you run that on iOS and expand a node you'll see that it crunches the UI for a few seconds and then loads the child nodes, but i also see on our application that it will crash some times and either way gives a bad feel to the UI on iOS

Completed
Last Updated: 13 May 2020 13:03 by ADMIN
Release R2 2020
If items are loaded on demand and treeview is placed inside StackLayout, when collapsing and expanding items, at some point the rendering is messed up.
Duplicated
Last Updated: 07 Apr 2020 09:00 by ADMIN

Scrolling a TreeView with expandable items on iOS causes items to randomly change position in the control and prevent items from being selected.
This renders the control unusable on iOS when expandable items are present.

I've attached a basic project that demonstrates the issue.
The project just needs the latest Telerik binaries added to it. They were too large to include.

I believe this is the same issue Martin was experiencing in the comments of https://feedback.telerik.com/xamarin/1427193-treeview-ios-wrong-visualization-with-custom-itemtemplate

Completed
Last Updated: 24 Jun 2020 12:09 by ADMIN
Release R2 2020 SP

I am using treeview loadondemand, doing an api call for every node that I open. I noticed that when I tried to open an item with 33 children object, it hangs the application.

The issue occurs when TreeViewItemTemplate is used.

Without the itemtemplate no issues.

Unplanned
Last Updated: 17 Jul 2020 10:51 by ADMIN

When we call ScrollItemIntoView to scroll to one of the nodes at the bottom of the tree the app will crash with a "Unspecified Error".

I've set it to load 150 nodes into the tree and when you click the "Test" button it will error (using UWP). If you change it to only load 100 nodes or less it should work.

Unplanned
Last Updated: 19 Mar 2021 14:45 by ADMIN

This freezing is not happening if we have less number of records, I have tested
with 20 records. But it may load more than 20 records, I do not have the exact number
where this freezing issue starts to happen.

The issue happens when item template is used.

workaround:
Remove the item template

Completed
Last Updated: 27 Jul 2018 11:09 by ADMIN
ADMIN
Created by: Stefan Nenchev
Comments: 0
Category: TreeView
Type: Bug Report
0
Available in minor release 2018.2.727.250. It will also be available in the R3 2018 release.
Completed
Last Updated: 17 Sep 2018 13:06 by ADMIN
Completed
Last Updated: 21 Jan 2019 06:00 by ADMIN
Calling TreeView's CheckItem method when the control is loaded, so that you mimic a "pre-checked" TreeView results in NullReferenceException in RadTreeView.Checkbox ToggleItem method.
Completed
Last Updated: 09 Nov 2018 13:46 by Olivier
When CollapseAll method is called, if the first element is out of the screen (after a scroll), the treeview crashes.

Available in minor release 2018.3.1109. It will also be available in the R1 2019 release.
Declined
Last Updated: 07 Jun 2019 08:50 by ADMIN
TextCellTextColor property of the TreeViewItemStyle is not respected.
Completed
Last Updated: 03 Jun 2019 14:33 by ADMIN
Release 2019.2.603.360 (R2 2019 minor release)
When the collection set as ItemsSource of the TreeView is cleared and new item is added, an exception of type NSInternalInconsistencyException is raised on iOS.
Also clearing the ItemsSource is not reflected in TreeView.
Completed
Last Updated: 20 Feb 2019 12:49 by ADMIN
Created by: Shawn
Comments: 1
Category: TreeView
Type: Bug Report
0
Trying to collapse an item after reinitialization of the RadTreeView causes the exception. The scenario can easily be recreated if all items from the ItemsSource are removed one by one and then added again then expand and collapse an item.
1 2