In Development
Last Updated: 03 Feb 2023 17:10 by ADMIN
Created by: Nico
Comments: 1
Category: NumericInput
Type: Bug Report
this is caused by this change in MAUI
at Microsoft.Maui.Controls.ImmutableBrush.OnParentChangingCore(Element oldParent, Element newParent)
   at Microsoft.Maui.Controls.Element.set_Parent(Element value)
   at Telerik.Maui.Controls.RadEntry.OnBorderBrushPropertyChanged(Object newValue)
   at Telerik.Maui.Controls.RadEntry.<>c.<.cctor>b__15_5(BindableObject b, Object o, Object n)
   at Microsoft.Maui.Controls.BindableObject.SetValueCore(BindableProperty property, Object value, SetValueFlags attributes, SetValuePrivateFlags privateAttributes)
   at Microsoft.Maui.Controls.BindableObject.SetValue(BindableProperty property, Object value, Boolean fromStyle, Boolean checkAccess)
   at Microsoft.Maui.Controls.Setter.Apply(BindableObject target, Boolean fromStyle)
   at Microsoft.Maui.Controls.Style.ApplyCore(BindableObject bindable, Style basedOn)
   at Microsoft.Maui.Controls.Style.Microsoft.Maui.Controls.IStyle.Apply(BindableObject bindable)
   at Microsoft.Maui.Controls.MergedStyle.set_Style(IStyle value)
   at Microsoft.Maui.Controls.BindableObject.SetValueCore(BindableProperty property, Object value, SetValueFlags attributes, SetValuePrivateFlags privateAttributes)
   at Microsoft.Maui.Controls.BindingExpression.ApplyCore(Object sourceObject, BindableObject target, BindableProperty property, Boolean fromTarget)
   at Microsoft.Maui.Controls.BindingExpression.Apply(Object sourceObject, BindableObject target, BindableProperty property)
   at Microsoft.Maui.Controls.Binding.<ApplyRelativeSourceBinding>d__27.MoveNext()
   at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_0(Object state)
   at Microsoft.UI.Dispatching.DispatcherQueueSynchronizationContext.<>c__DisplayClass2_0.<Post>b__0()

In Development
Last Updated: 03 Feb 2023 15:08 by ADMIN
Created by: Nathan
Comments: 1
Category: UI for .NET MAUI
Type: Bug Report

Hi team,

When deploying to certain platforms, under cetain circumstances, there is an exception that occurs in the DatePicker, TimePicker and a few other controls that rely on the same inner components. The stacktrace looks like it has to do with a default value for AppThemeBinding.

Thank you,


In Development
Last Updated: 02 Feb 2023 18:39 by ADMIN

SDKBrowserMaui application, change PopupStyling.xaml and see that text changes are not reflected in the control.

For example, changing it to:

            <Style TargetType="Button" x:Key="cancelButtonStyle">
                <Setter Property="BackgroundColor" Value="Transparent"/>
                <Setter Property="Text" Value="bob"/>
                <Setter Property="TextColor" Value="#1188FF"/>

Text is not applied. It affects all pickers.


Set Accept and Cancel Button text properties to the pickers: 

<telerikInput:RadDatePicker >
                                                          HeaderLabelText="Date Picker"

Last Updated: 02 Feb 2023 17:32 by Nathan

When setting BorderBrush, BorderThickess, FocusedBorderBrush and FocusedBorderThickness do not apply on the entire entry control, they apply only on bottom. 

    <telerik:RadEntry Text="Hello World" TextColor="DarkRed" 

And the result:


In Development
Last Updated: 02 Feb 2023 13:37 by ADMIN

Hi Team,

Please refer to the following screenshot from the ControlsSamples project on Windows:

Notice the descender on the y character is pushing up the Delivery column header's Label container, but the Price text is flush with the bottom? This is causing misalignment between text in other column headers that do not have descenders.

You might not immediately notice this, for example in the Aggregates demo, only the first column has no descenders but the next two do. 


However, it's a more serious visual problem when every other column is vertically offset. Please consider adding a default Padding to account for descenders, or maybe change the VerticalOptions of the text container to be center aligned.

Thank you,

Matthew & Team

Last Updated: 02 Feb 2023 09:11 by Erik Damgaard
Created by: Erik Damgaard
Comments: 0
Category: TabView
Type: Bug Report
When setting the IsHeaderScrollable to True, the headers are not scrollable.
Last Updated: 01 Feb 2023 08:57 by Michał

When I register the pages and controls using AddTransient it works but when I use AddSingleton it doesn't. 

System.InvalidOperationException: PlatformView cannot be null here
[mono-rt]    at Microsoft.Maui.Handlers.ViewHandler`2[[Microsoft.Maui.ILayout, Microsoft.Maui, Version=, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.Platform.LayoutViewGroup, Microsoft.Maui, Version=, Culture=neutral, PublicKeyToken=null]].get_PlatformView() in ViewHandlerOfT.cs:line 36
[mono-rt]    at Telerik.Maui.Handlers.RadMaskedEntryHandler.GetTextInputFromNativeVisualTree()
[mono-rt]    at Telerik.Maui.Handlers.RadMaskedEntryHandler.UpdateNativeTextInput()
[mono-rt]    at Telerik.Maui.Handlers.RadMaskedEntryHandler.NativeView_ChildViewRemoved(Object sender, ChildViewRemovedEventArgs args)

Last Updated: 31 Jan 2023 17:09 by Hanoch

BackgroundColor is not applied property when DynamicResource is used and button enabling state is changed

<Style TargetType="telerik:RadButton" x:Key="MyTelerikButtonStyle">
            <Setter Property="TextColor" Value="{DynamicResource MyPrimaryColor}" />
            <Setter Property="BackgroundColor" Value="{DynamicResource MySecondaryColor}" />
                <Trigger TargetType="telerik:RadButton" Property="IsEnabled" Value="false" >
                    <Setter Property="BackgroundColor" Value="Gray" />


Use StaticResource:

 <Setter Property="TextColor" Value="White" />
 <Setter Property="BackgroundColor" Value="Green" />

In Development
Last Updated: 31 Jan 2023 12:26 by ADMIN

when adding ComboBox inside the SideDrawer and setting ComboBox.IsEditable to false, the control is editable. 

This happens only when the control is inside SideDrawer.

Last Updated: 30 Jan 2023 13:42 by ADMIN


I'am testing Telerik .NET MAUI controls for windows and android. FontFamily property of columns (both for xaml and app.xaml) not working. If an embedded font is choosen for whole application, DataGrids look different from other parts of the application

here is my xaml, "fnt_bold" is a MauiFont in resources. All other ui components are shown in my font

                <telerik:RadDataGrid x:Name="dataGrid" AutoGenerateColumns="False" UserEditMode="None" UserGroupMode="Disabled" SelectionMode="Single" SelectionUnit="Row"  >
                        <telerik:DataGridTextColumn PropertyName="ID" HeaderText="RefID" Width="60" SizeMode="Fixed">
                                <telerik:DataGridTextCellStyle FontFamily="fnt_bold" FontSize="12.25"/>
                        <telerik:DataGridTextColumn PropertyName="CODE" HeaderText="Code" Width="80" SizeMode="Fixed">
                                <telerik:DataGridTextCellStyle FontFamily="fnt_bold" FontSize="12.25"/>
                        <telerik:DataGridTextColumn PropertyName="NAME" HeaderText="Name" Width="250" SizeMode="Fixed">
                                 <telerik:DataGridTextCellStyle FontFamily="fnt_regular" FontSize="12.25"/>

I have attached a screenshot from my test app.

I also checked the sample telerik android app (Telerik UI for .NET MAUI Controls). DataGrid components in Telerik Sample app also dont use the expected font unlike all other ui components.

Just one of the DataGrid samples of one column in the sample app has the correct fontfamily property. I have attached that screenshot also. I couldn't figure out how to implement it.

Am i missing something?

Thanks in advance.











In Development
Last Updated: 30 Jan 2023 08:15 by ADMIN
When the culture requires "," as decimal separator, the numeric keyboard shows "." and cannot enter ","
In Development
Last Updated: 24 Jan 2023 16:55 by ADMIN

I have a DataGrid with ItemsSource bound to ObservableRangeCollection,
First I Clear() the existing items of the collection, then add new items, and raises a single CollectionChanged event with action = NotifyCollectionChangedAction.Reset.

the grid continues to show nothing.

This works with .NET MAUI CollectionView and ListView

Workaround: Add a delay after clearing the collection.

Last Updated: 24 Jan 2023 14:28 by ADMIN



IsOpen = true,
IsOpen = false,
IsOpen = true,
IsOpen = false,

while the last IsOpen update isn't ready, kills the Popup.
It works async, even if animations are set to none/0s and there is no public event to validate the last update is fully done (Popup opened/closed)

In my case i have a popup opened, while a search operation is running in the background.
If this background search returns too fast and i set IsOpen to false, the update is ignored and the popup keeps in an opened state.

In Development
Last Updated: 24 Jan 2023 08:06 by ADMIN
The following code uses RadHighlightedLabel and manipulates the highlighted text by the Text of an Entry.

<telerik:RadDataGrid x:Name="dataGrid" AutomationId="dataGrid" AutoGenerateColumns="False">
                    <telerik:DataGridTextColumn PropertyName="Country" HeaderText="HighlightedLabel">
                                <telerik:RadHighlightLabel UnformattedText="{Binding Country}"
                                                                           HighlightText="{Binding Source={x:Reference searchEntry}, Path=Text}"

Expected: When typing in the entry the text of the label should get highlighted and remove the highlight when the text of the entry is removed.

Actual: The highlighted text doesn't get updated and stays the same.



In Development
Last Updated: 23 Jan 2023 16:33 by ADMIN

When the selected item is set initially, the selected style is not applied to the row/cell.

Workaround: You can use a Dispatcher to workaround the issue, code looks as follows:

this.Dispatcher.StartTimer(TimeSpan.FromMilliseconds(200), () =>
            if (dataGrid.SelectedItem == null)
            return false;

Last Updated: 23 Jan 2023 16:20 by John

I have a RadPieChart in my application. When removing the app from the backstack and service is running, then opening the app from the notification, the app crashes with: 


Java.Lang.IllegalStateException: ChildNode is already parented by a ChartElement instance.



In Development
Last Updated: 23 Jan 2023 10:05 by ADMIN

when the tab IsEnabled is set to False -> the style of the disabled tab changes, but the the disabled tab is still clickable.

when the tab IsVisible is set to False -> the tab is not visible, but its content is still visible.

In Development
Last Updated: 20 Jan 2023 15:59 by ADMIN

1. filter the column by any distinct value
2. The filter is applied
3. Open the same filtering again and tap reset
4. All rows are visible and everything is ok
5. Open the same filtering again

The Checkbox from step 1 is still checked and checking any other checkbox and applying filtering does not work 

Last Updated: 19 Jan 2023 13:00 by David

On Android: RadEntry and .NET Maui Entry behavior are identical. When unfocused, the focused background is still applied.

On WinUI: RadEntry and .NET Maui behavior when are unfocused, the focused background is still applied. When RadEntry is in the "Focused" and "PointerOver" visual states, the control behavior is with the default state. When .NET Maui Entry is in the "Focused" and "PointerOver" visual states, the control behavior is with the "PoinetOver" visual state.

On iOS and MacCatalys: When RadEntry is unfocused, the focused background is still applied.

Last Updated: 18 Jan 2023 12:55 by ADMIN
Release 5.0.0

Run SDKBrowserMaui example on WinUI
Navigate to DataGrid->LoadOnDemandCategory->LoadOnDemandExmaple

Start scrolling the grid using the scrollbar

Crash occurs on WinUI.

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