Completed
Last Updated: 26 May 2020 08:34 by ADMIN
Release LIB 2020.2.525 (5/26/2020)

Select nested item in virtualized treeview with single selection mode.

Collapse its parent. Select item in the level of the parent. Expand the parent and notice two items are visually selected.

Expexted : only the last selected item with mouse should be visually selected.

Workaround:

private void TreeView_ItemPrepared(object sender, RadTreeViewItemPreparedEventArgs e)
{
    if ((e.PreparedItem.IsSelected == true && this.TreeView.SelectedItem != null && this.TreeView.SelectedItem != e.PreparedItem.Item))
        e.PreparedItem.IsSelected = false;
}
Completed
Last Updated: 20 Feb 2020 13:40 by ADMIN
Release R1 2020 SP
Virtualized TreeView is bound to collection of models and IsSelected of RadTreeViewItem is 2way bound to IsSelected of model.
Select the 10th item with mouse. 
Reset the items of the tree to a subset (1-15) containing the selected item.
Select the 5th item with mouse and shift key down.
Expected: Range 5-10 of items is selected.
Actual: Range 10-15 of items is selected.

Completed
Last Updated: 18 Feb 2020 08:28 by ADMIN
Release R1 2020 SP
When switching to a different window, the selected item in the RadTreeView stays in a selected in-focus state. The expected behavior is not to be focused any more (turn gray).
Completed
Last Updated: 10 Feb 2020 09:36 by ADMIN
Release LIB 2020.1.210 (2/10/2020)
Selecting an item via tap does not work when ScrollViewer.PanningMode has a value other than None.
Completed
Last Updated: 22 Aug 2018 17:28 by Werner
Setting the HeaderStringFormat of RadTreeViewItem does not format the Header.

As a workaround, HeaderTemplate of RadTreeViewItem could be set which has TextBlock with StringFormat property set on its Text Binding.



 <DataTemplate x:Key="template">
                <TextBlock Text="{Binding ., StringFormat='Received ({0:N0})'}" />
</DataTemplate>


Available in LIB version: 2016.3.1121
Completed
Last Updated: 31 Mar 2016 14:50 by Mark
Virtualized RadTreeView.

Windows Display Size is set to Larger (150%).

Expanding and collapsing TreeViewItems leads to ArgumentException in TreeViewPanel.ExtendDesiredSize method - "Width and Height must be non negative".

Available in LIB version: 2015.3.1207 
Completed
Last Updated: 11 Jan 2016 08:26 by ADMIN
If the  RadTreeView control is used on touch device in scenario with Checkbox support, the TreeViewItem  cannot be (un)checked with a single tap.  

Available in LIB version: 2015.3.1109
Completed
Last Updated: 05 Oct 2015 14:51 by ADMIN
If you define a RadMaskedInput control in the ItemEditTemplate of RadTreeView and then bind the Value property of the masked input to a property from the RadTreeViewItem's view model, the input displays the view model's class ToString() method. Instead the value of the bound property should be displayed.

Fix is available in LIB Version: 2015.3.1005.
Completed
Last Updated: 02 Sep 2015 08:28 by ADMIN
RadTreeViewItem is focused but it is not selected.

KeyDown should select the item below the focused one but it does not.


Will be available in Q3 2015 Release.
Completed
Last Updated: 22 Jul 2015 14:53 by ADMIN
TreeView is bound to CollectionViewSource. Certain items are expanded. The CVS is refreshed leading to ArgumentOutOfRange Exception in the TreeViewPanel.cs

NOTE: The bug is reported via the following scenario. When the bound IsExpanded property is changed in the model, OnCollectionChanged with NotifyChangedCollectionAction.Reset is invoked.

We consider this as highly unsafe operation. What actually happens is that by the time containers are measured / arranged (because the IsExpanded is triggered) - Reset also triggers reset / measure arrange of all items. This is the same as modifying a list/collection when it is iterated - the framework wll throw an error.

To better prove this is unsafe, we also tested System.Windows.Controls.TreeView. On MouseDown, we set IsExpanded = true on collased item and in the PropertyChnaged handler we invoked OnCollectionChanged with Reset in the bound ObservableCollection. This resulted in StackOverflowException in PresentationCore.dll.

Conclusions. The Exception is fixed in the RadTreeView but we consider invoking Reset in such moment (during measure/arrange) as not supported / critical / unsafe operation.
Completed
Last Updated: 05 Mar 2015 17:08 by ADMIN
ADMIN
Created by: Petar Mladenov
Comments: 0
Category: TreeView
Type: Bug Report
0
In scenarios when both ScrollViewers (vertical and horizontal are visible), pressing Home Key might lead to freezing of the Vertical ScrollBar.

Available in LIB version: 2015.1.0309
Completed
Last Updated: 20 May 2014 08:07 by ADMIN
When you have a, for example, a RadSlider in a RadTreeViewItem and you try to move the Thumb of the slider, the drag events of the tree view item will be triggered. The same behavior is observed also when you have a TextBox instead of a slider and try to mark part of the text in it with the mouse.
Completed
Last Updated: 09 Oct 2015 21:11 by Arthur
ADMIN
Created by: Martin Ivanov
Comments: 3
Category: TreeView
Type: Bug Report
1
When the data is bound to the RadTreeView the AutoScrollToSelectedItem doesn't work. The same behavior appears when the RadTreeViewItems are created declarative and the SelectedItem is set True on any of its root level items. 

Available in LIB version: 2014.3.1301
Completed
Last Updated: 26 Feb 2016 16:45 by ADMIN
RadTreeView or RadPanelBar has custom Style in which there is no ScrollViewer in the ControlTemplate. IsDragDropEnabled is set to true. When dragged item is dragged above the tree/panelbar - null reference exception occurs in RadTreeView.AutoScrolling.cs.
Completed
Last Updated: 19 May 2016 13:55 by Michael
ADMIN
Created by: Pavel R. Pavlov
Comments: 1
Category: TreeView
Type: Bug Report
1
When the RadTreeViewItem (or the RadTreeView) is disabled and after a delay is enabled again it should go in "Normal" state. Now the control preserves its state, hence you are able to send more than one RadTreeViewItem in "Hovered" state.
Completed
Last Updated: 10 Feb 2014 15:56 by ADMIN
ADMIN
Created by: Telerik Admin
Comments: 0
Category: TreeView
Type: Bug Report
6
When the IsLineEnabled property is set to True and there are more than 3 levels of hierarchy, the lines look jagged.
Completed
Last Updated: 21 Jul 2015 13:40 by ADMIN
When the RadTreeViewItem (or the RadTreeView) is disabled and after a delay is enabled again it should go in "Normal" state. Now the control preserves its state, hence you are able to send more than one RadTreeViewItem in "Hovered" state.

The fix will be included in Q2 2015 SP.
Completed
Last Updated: 01 Aug 2014 06:53 by ADMIN
Update the radtreeview-howto-exapand-select-item-with-lod-enabled-treeview
Completed
Last Updated: 23 May 2014 11:06 by James
The IsDragPreviewEnabled and IsDragTooltipEnabled properties don't work with the "NEW" DragDropExecutionMode.
Completed
Last Updated: 11 Aug 2016 14:04 by ADMIN
If item is expanded from the UI and viewport is scrolled to the top calling BringIndexIntoView causes the viewport to lock while scrolling.

Available in LIB version: 2016.2.516 
1 2