Last Updated: 27 Nov 2023 06:26 by ADMIN
Release R2 2023
Created by: Sébastien
Comments: 0
Category: Chart
Type: Bug Report
Line Series is not drawn when Chart has only two data points. This is a bug in my opinion, this a line can be drawn from 2 points.
Last Updated: 03 May 2023 13:08 by Sébastien
TelerikChartAxisBorderBrush is not applied when setting in Dark Light ThemeResources from the Telerik Theme Resources 
Last Updated: 19 Dec 2022 07:03 by ADMIN
Inconsistency in Line and Spline series performance
Last Updated: 15 Jul 2022 11:59 by ADMIN

Resizing the window containing a CartesianChart with SplineSeries leads to some incorrect rendering between points:

Last Updated: 02 Jul 2022 06:30 by Sébastien
If we have a Chart with DateTimeContinuousAxis as horizontal axis, updating its Minimum and Maximum values should update the rendered in the Chart plot area data. However, if for some period (Minimum and Maximum range) there is no data, the current displayed data is not cleared.
Last Updated: 17 Jun 2022 08:44 by David
If you populate the Chart with data through a SeriesDescriptor as explained here: How to Generate a Dynamic Series Using a Collection of Collections, the PointTemplate/PointTemplateSelector is not applied.
Last Updated: 30 May 2022 08:22 by Sébastien
updating data in real-time causes flickering when series are added through the series provider

Add series to the chart without using the SeriesProvider option.
Pending Review
Last Updated: 05 Jan 2021 14:40 by ADMIN
Created by: Piotr
Comments: 1
Category: TimePicker
Type: Bug Report



RadTimePicker objects remain in memory because, in the DateTimePicker class, it subscribe  on event Window.Current.SizeChanged but you never unsubscribe. So it generates memory leaks. The control will never be removed by the GC(garbage collector).



Source code:


 /// <summary>
        /// Initializes a new instance of the <see cref="DateTimePicker"/> class.
        /// </summary>
        protected DateTimePicker()
            var languages = new List<string> { this.CalendarLanguage };
            var calendar = new Windows.Globalization.Calendar(languages, this.CalendarIdentifier, ClockIdentifiers.TwelveHour);
            this.calendarValidator = new CalendarValidator(calendar);
            this.selectorUtcValue = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
            this.utcValue = this.selectorUtcValue;
            Window.Current.SizeChanged += this.Current_SizeChanged;

Last Updated: 20 May 2020 07:57 by ADMIN
When the SelectionMode is set to Extended and we try to select items that are not currently visible using Shift + press only the Rows that are currently visible are selected.
Last Updated: 18 Nov 2019 17:55 by ADMIN

In the RowDetails for a grid item I have a data template column as below.  If I check the checkbox on the first rowdetails item, every first rowdetails item in the entire grid has the check box checked.  Even if the SentToAcctFlag value for that item is False.  If I check one item in the row details I want only that one item to be checked.  Even refreshing the grid data using ItemsSource does not remove the first rowdetails item checked value for each parent record.


                                        <telerikGrid:DataGridTemplateColumn Header="To Acct" HeaderStyle="{StaticResource WorkOrderGridColHeader}" SizeMode="Fixed" Width="100"
                                                        CanUserEdit="True" CanUserSort="False" CanUserFilter="False" CanUserResize="False"  >
                                            <telerikGrid:DataGridTemplateColumn.CellContentTemplate >
                                                    <CheckBox IsChecked="{Binding SentToAcctFlag}" Margin="12,1,0,0" IsEnabled="True" Checked="SentToAcct_Checked" Unchecked="SentToAcct_Unchecked" />

Pending Review
Last Updated: 25 Jul 2019 18:53 by ADMIN
Created by: Rodolfo
Comments: 1
Category: UI for UWP
Type: Bug Report

I am trying to use the chart control in multiple views: Meaning not just one window. I create several windows from the main window. It is not call "windows". It is a view.

It looks like the chart control fails:


System.Exception: The application called an interface that was marshalled for a different thread. (Exception from HRESULT: 0x8001010E (RPC_E_WRONG_THREAD))
   at Windows.UI.Xaml.Media.SolidColorBrush.get_Color()
   at Telerik.UI.Xaml.Controls.Chart.ContainerVisualsFactory.ChangeBrushesAccordingToAppTheme()
   at Telerik.UI.Xaml.Controls.Chart.ContainerVisualsFactory.PrepareCartesianAxisLineVisual(CartesianAxis axis, ContainerVisual lineContainer, RadRect layoutSlot, AxisType axisType)
   at Telerik.UI.X


Is there a way to fix it ?


to understand the concept of multiple views:


please advise me...

Last Updated: 27 May 2019 11:48 by ADMIN
Created by: Heiko Görig
Comments: 0
Category: DataGrid
Type: Bug Report

With the latest version of the UWP-Controls a ArgumentException occurs if I want to display a DataGrid with Items whose ItemType has public static properties.

Last Updated: 10 Apr 2019 05:48 by ADMIN

I created a post in the forums but I don't know how much attention that particular forum gets.

I have created a simplified project on GitHub that reproduces the problem. 

I'm not sure if the problem is with the control or the framework, but my example project clearly demonstrates the problem. 

I suspect the problem is related to binding the Maximum property of the RadNumericBox. Items in the "Two" group have a higher maximum than items in the "One" and "Three" groups. While scrolling through the list, some items in the "Two" group get their values changed to the maximum from the other groups. It's also odd that the values that change are changed twice. The Debug Output window shows when and how each value is changed while scrolling through the list.

If any of this is not clear, I am happy to provide more detail, however, I'm sure the example project will make the problem clear. 

Pending Review
Last Updated: 13 Mar 2019 23:01 by ADMIN

The "Foreground" property does not apply to the RadDatePicker icon .. it only applies to the text even though I followed what this page explains:

My XAML code is the following:

<Custom:RadDatePicker x:Name="FromDatePicker" HorizontalAlignment="Left" ValueChanged="DatePickerValueChange">
                        <Style TargetType="Custom:RadDatePicker">
                            <Setter Property="Foreground" Value="Orange"/>
                            <Setter Property="FontSize" Value="15"/>
                            <Setter Property="FontStyle" Value="Italic"/>
                            <Setter Property="Background" Value="Beige"/>
                            <Setter Property="BorderBrush" Value="Orange"/>

Attached image of the properties that only my RadDatePicker takes when running the application ..

Last Updated: 08 Mar 2019 11:42 by ADMIN
When the DataGrid is placed inside a Panel (for example Grid) and after that is removed from that panel and is placed in another one the selection stops working. The issue is caused by the inaccurate order of the thrown Unloaded and Loaded events which the control relies on.
Last Updated: 07 Feb 2019 14:48 by ADMIN
Created by: Raymond
Comments: 1
Category: NumericBox
Type: Bug Report

As said in this thread the decimal-separator is bugged when used in windows 10 1809, at least if the decimal-separator system-setting is other then a dot, e.g. in Germany which uses comma.

The Bug seems to be solved in the referred Branch by Nasko yet it is not available in NuGet, not even as a prerelease.

Also setting the decimal-separator manually is impossible, yet in 2016 it was said this change will be implemented

However, is there a schedule, when the Bugfix will arrive in NuGet? The recent version is from October 17th 2018 while the fixed branch is from November 2nd 2018.

Last Updated: 22 Nov 2018 08:12 by Didi
Last Updated: 25 Oct 2018 06:23 by ADMIN
Created by: Stefan Nenchev
Comments: 0
Category: UI for UWP
Type: Bug Report

Last Updated: 16 Oct 2018 07:10 by Paul
Last Updated: 16 Oct 2018 07:09 by urja
I have a radgrid and when I scroll down it throws this error, but I'm not sure where the error is coming from or how I can help resolve it.

This is a UWP app and I'm debugging in VS 2017 15.3 on windows 10 creators edition.

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at Telerik.UI.Xaml.Controls.Grid.IndexStorage.ValueForIndex(Int32 index, Boolean approximate)
   at Telerik.Data.Core.Layouts.CompactLayout.UpdateAverageLength(Int32 startIndex, Int32 endIndex)
   at Telerik.UI.Xaml.Controls.Grid.NodePool`2.MeasureVertically(RadSize availableSize, Double offset, Double bufferScale)
   at Telerik.UI.Xaml.Controls.Grid.NodePool`2.OnMeasure(RadSize availableSize, Double offset, Int32 frozenEleme
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