Approved
Last Updated: 18 Nov 2019 14:25 by ADMIN
Created by: Imploded
Comments: 1
Category: VirtualizingWrapPanel
Type: Bug Report
1

Hello,

Since I updated to the most recent version of your controls, I can see that many of my users get a DivideByZero exception.

I have not made any changes at all to my code, and unfortunately I cannot reproduce it.

It's reported a couple of times per day though via our uncaught exception tracker.

The callstack is:

System.DivideByZeroException: Attempted to divide by zero.
at Telerik.Windows.Controls.VirtualizingWrapPanel.GetPosition(System.Int32 index, System.Int32 itemsInDirection) at offset 0 at Telerik.Windows.Controls.VirtualizingWrapPanel.Telerik.Windows.Controls.Internal.IPanelKeyboardHelper.GetOffsets(System.Int32 index) at offset 0 at Telerik.Windows.Controls.Internal.PanelHelper.<>c__DisplayClass2.<MakeVisible>b__0() at offset 208 at Telerik.Windows.Controls.Internal.PanelHelper.ResumeExecution() at offset 27 at Telerik.Windows.Controls.Primitives.ListControl.OnScrollViewerLoaded(System.Object sender, System.Windows.RoutedEventArgs e) at offset 0 at System.Windows.RoutedEventHandlerInfo.InvokeHandler(System.Object target, System.Windows.RoutedEventArgs routedEventArgs) at offset 0 at System.Windows.EventRoute.InvokeHandlersImpl(System.Object source, System.Windows.RoutedEventArgs args, System.Boolean reRaised) at offset 230 at System.Windows.UIElement.RaiseEventImpl(System.Windows.DependencyObject sender, System.Windows.RoutedEventArgs args) at offset 87 at System.Windows.UIElement.RaiseEvent(System.Windows.RoutedEventArgs e) at offset 20 at System.Windows.BroadcastEventHelper.BroadcastEvent(System.Windows.DependencyObject root, System.Windows.RoutedEvent routedEvent) at offset 71 at System.Windows.BroadcastEventHelper.BroadcastLoadedEvent(System.Object root) at offset 38 at MS.Internal.LoadedOrUnloadedOperation.DoWork() at offset 8 at System.Windows.Media.MediaContext.FireLoadedPendingCallbacks() at offset 42 at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks() at offset 88 at System.Windows.Media.MediaContext.RenderMessageHandlerCore(System.Object resizedCompositionTarget) at offset 92 at System.Windows.Media.MediaContext.RenderMessageHandler(System.Object resizedCompositionTarget) at offset 46 at System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, System.Object args, System.Int32 numArgs) at offset 119 at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(System.Object source, System.Delegate callback, System.Object args, System.Int32 numArgs, System.Delegate catchHandler) at offset 2

Is this a known bug? As you can see it's thrown from your components.

Approved
Last Updated: 08 Nov 2017 13:01 by ADMIN
ADMIN
Created by: Martin Ivanov
Comments: 0
Category: VirtualizingWrapPanel
Type: Feature Request
0
Currently, the panel will create containers for the first item that should be shown before the viewport start and the last item that should be shown after the viewport. Here we talk about containers outside of the viewport. This is defined in the implementation of the panel and it cannot be changed. 

Allow setting the number of visual items that can be generated out of the viewport. Or maybe pixel size. Similar to the attached properties of VirtualizingPanel (CacheLength and CacheLengthUnit). May be we can use them as well.(https://msdn.microsoft.com/en-us/library/system.windows.controls.virtualizingpanel.cachelength(v=vs.110).aspx)

Note: The cache is the amount of space above or below the viewport in which items are not virtualized. 
Approved
Last Updated: 08 Nov 2017 13:09 by ADMIN
This is similar to the native VirtualizingStackPanel which has a CleanUpVirtualizedItem attached event.
https://msdn.microsoft.com/en-us/library/system.windows.controls.virtualizingstackpanel.cleanupvirtualizeditem(v=vs.110).aspx
Approved
Last Updated: 30 Jan 2017 15:25 by ADMIN
ADMIN
Created by: Ivan Ivanov
Comments: 0
Category: VirtualizingWrapPanel
Type: Feature Request
1
Setting HorizontalAlignment to VirtualizingWrapPanel is not properly reflected in the UI.
Approved
Last Updated: 04 Aug 2016 09:46 by ADMIN
Completed
Last Updated: 13 Jul 2016 12:37 by ADMIN
ADMIN
Created by: Nick
Comments: 4
Category: VirtualizingWrapPanel
Type: Bug Report
4

			
Completed
Last Updated: 09 Sep 2019 08:02 by ADMIN
Release R3 2019
ADMIN
Created by: Ivan Ivanov
Comments: 3
Category: VirtualizingWrapPanel
Type: Feature Request
7

			
Completed
Last Updated: 01 Oct 2019 10:51 by ADMIN
ADMIN
Created by: Vlad
Comments: 0
Category: VirtualizingWrapPanel
Type: Feature Request
18
VirtualizingWrapPanel with grouping