Need More Info
Last Updated: 05 May 2025 12:59 by Rodrigo
Created by: Malcolm
Comments: 19
Category: CollectionView
Type: Bug Report
3
Our error reporting is getting multiple of these crashes:
Message: Object reference not set to an instance of an object
Telerik.Maui.Data.LocalDataSourceProvider.ProcessCollectionChanged(NotifyCollectionChangedEventArgs e)
Telerik.Maui.Data.LocalDataSourceProvider.ProcessPendingChanges()
Telerik.Maui.Data.LocalDataSourceProvider.OnCompleted(Object sender, DataEngineCompletedEventArgs e)
Telerik.Maui.Data.ParallelDataEngine.RaiseCompleted(DataEngineCompletedEventArgs args)
Telerik.Maui.Data.ParallelDataEngine.ProcessBottomLevelsParallel(Task`1 bottomLevelResultsTask, ParallelState parallelState)
Telerik.Maui.Data.ParallelDataEngine+<>c__DisplayClass102_0.<BeginParallelProcessing>b__1(Task`1 task)
System.Threading.Tasks.ContinuationTaskFromResultTask`1[[Telerik.Maui.Data.ParallelDataEngine+GroupingResults, Telerik.Maui.Core, Version=10.0.0.0, Culture=neutral, PublicKeyToken=5803cfa389c90ce7]].InnerInvoke()
System.Threading.Tasks.Task+<>c.<.cctor>b__292_0(Object obj)
System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread , ExecutionContext , ContextCallback , Object )
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread , ExecutionContext , ContextCallback , Object )
System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& , Thread )

unfortunately we don't have a repro for this crash just yet.

It does look like it's occuring on iOS only.
Unplanned
Last Updated: 30 Apr 2025 10:13 by Luis
Create a blank telerik project (I've not used shell);
Update maui to 9.0.50 (for more relevance with current code);
Replace the contents of MainPage.xaml with the xaml shown below;
Remove unnecessary code from MainPage.xaml.cs to allow app to build and run;
OBSERVE:
Test 1.2 fails - items are shown on a single row when they should not fit.
Test 1.3 fails - items are shown on a single row when they should not fit, and the wrap layout is extended to two rows.
Test 2.1 fails - items are show on two rows when they should fit a single one.
In Development
Last Updated: 30 Apr 2025 10:07 by ADMIN

Begin editing the first cell firs column
Without closing the cell editor, scroll down to the last cell, the first cell should exit the viewport.
Start editing the last cell.
Scroll back up to the first cell

The content inside the first cell is missing.

The content should be there.

Unplanned
Last Updated: 30 Apr 2025 05:08 by kumar

When adding an entry in the popup content and focusing the entry, the popup background crops on bottom when the keyboard appears.

The issue happens only on emulators pixel 7 pro, pixel 6a, android 13,14,15 etc. Currently, cannot reproduce on a real device.

In Development
Last Updated: 29 Apr 2025 08:20 by ADMIN

I would like to draw attention to this at an early stage.
When using MAUI Nightly 8.0.20-nightly.10376, the app crashes immediately upon startup if you set Telerik Popup Settings in the MAUI Styles

See min repro example https://github.com/baaaaif/MauiNightlyCrash

<MauiVersion>8.0.20-nightly.10376</MauiVersion>
<Style TargetType="telerik:RadTimePicker">
    <Setter Property="PopupSettings">
        <Setter.Value>
            <telerik:PickerPopupSettings IsHeaderVisible="False" />
        </Setter.Value>
    </Setter>
</Style>

From the inner Exception...:

NameValueType
InnerException{"Object reference not set to an instance of an object."}System.Exception {System.NullReferenceException}

at Microsoft.Maui.Controls.AppThemeBinding.AppThemeProxy..ctor(Element parent, AppThemeBinding binding) at Microsoft.Maui.Controls.AppThemeBinding.Apply(Object context, BindableObject bindObj, BindableProperty targetProperty, Boolean fromBindingContextChanged, SetterSpecificity specificity) at Microsoft.Maui.Controls.BindableObject.SetBinding(BindableProperty targetProperty, BindingBase binding, SetterSpecificity specificity) at Microsoft.Maui.Controls.BindableObject.SetBinding(BindableProperty targetProperty, BindingBase binding) at Microsoft.Maui.Controls.BindableObjectExtensions.SetAppTheme[T](BindableObject self, BindableProperty targetProperty, T light, T dark) at Microsoft.Maui.Controls.BindableObjectExtensions.SetAppThemeColor(BindableObject self, BindableProperty targetProperty, Color light, Color dark) at Telerik.Maui.Controls.PickerPopupSettings.OnPopupOutsideBackgroundColorPropertyChanged(Color color) at Telerik.Maui.Controls.PickerPopupSettings..ctor() at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean wrapExceptions)


In Development
Last Updated: 29 Apr 2025 07:35 by ADMIN

when adding entry to the page a margin is added. The space between the Entry and other controls is significant: 

this is a sample xaml:

	<VerticalStackLayout>
		<telerik:RadEntry  x:Name="entry" Placeholder="telerik entry" BackgroundColor="AntiqueWhite" />
		<telerik:RadEntry x:Name="myentry" Placeholder="telerik entry" BackgroundColor="AntiqueWhite" />
		<Entry Placeholder="maui entry" BackgroundColor="LightBlue"/>
		<Entry Placeholder="maui entry" BackgroundColor="LightBlue"/>
	</VerticalStackLayout>

 

this is the result:

 

In Development
Last Updated: 28 Apr 2025 14:00 by ADMIN

Keep the data grouped, make the window a bit smaller so you have a decent amount of rows to scroll through, and using your mouse wheel, scroll up and down quickly. Eventually you'll notice that the grid will start to bounce a bit. For example, you'll scroll down and then without scrolling the mouse wheel up at all, it'll jump back up a few rows on its own.

Unplanned
Last Updated: 28 Apr 2025 09:03 by Zachary
 In the Kendo jQuery library, there's a parameter called adaptiveSlotHeight that dynamically resizes the calendar to accommodate multiple appointments in a single day. https://demos.telerik.com/kendo-ui/scheduler/adaptive-slot-height 
Unplanned
Last Updated: 28 Apr 2025 07:28 by Nate
When calling Focus() programmatically, the keyboard does not appear. 
Unplanned
Last Updated: 25 Apr 2025 16:43 by ADMIN
When setting the header item style as implicit style for example in the Styles.xaml folder, crash occurs on WinUI, on android the control does not display
Unplanned
Last Updated: 25 Apr 2025 14:22 by Nico
Created by: Raymond
Comments: 2
Category: RichTextEditor
Type: Feature Request
4
Provide a notification (property/event) when the edited content inside the RichTextEditor has been changed.
In Development
Last Updated: 25 Apr 2025 13:48 by ADMIN

Text is not centered horizontally on WinUI. 

on maui 9.0.50 text is not visible and hiding the ClearButton does not work

on maui 9.0.40 text is not centered but hiding the ClearButton works

 

In Development
Last Updated: 25 Apr 2025 11:36 by ADMIN

Starting with v10, all groups except the last, get a blank, empty row.

If you toggle off the grouping, the empty rows go away, but once you put the grouping on, these empty rows show up again.

In Development
Last Updated: 25 Apr 2025 11:35 by ADMIN

Some data is missing from the UI when grouping is applied and then filter the data. 

If you ungroup, the items are displayed.

In Development
Last Updated: 25 Apr 2025 11:34 by ADMIN
When DataGrid is grouped and applying filtering, aggregates footer appears in the cells
Unplanned
Last Updated: 24 Apr 2025 06:19 by Trevor
Created by: Trevor
Comments: 0
Category: UI for .NET MAUI
Type: Feature Request
0

I noticed there is a Toggle Button available, but the Toggle Switch Button that is available for WPF is not yet available for MAUI.

Please consider adding such button for .NET MAUI suite.

Unplanned
Last Updated: 23 Apr 2025 12:35 by Ralph
There is a thin line between the header items when rotating the device in landscape mode
Unplanned
Last Updated: 23 Apr 2025 06:11 by Didi
Created by: Didi
Comments: 0
Category: DataGrid
Type: Feature Request
0
Provide an option to group the columns in Telerik MAUI DataGrid control. Similar like in the WPF GridView control: https://docs.telerik.com/devtools/wpf/controls/radgridview/columns/column-groups 
Unplanned
Last Updated: 22 Apr 2025 14:38 by Cameron
Created by: Cameron
Comments: 0
Category: Popup
Type: Feature Request
6

when setting popup placement and using right to left language, the popup is not aligned as expected.

For example placement center, popup displays on right side

placement bottom, popup displays on top

Unplanned
Last Updated: 17 Apr 2025 13:56 by Tony
When loading a pdf from a file, uri, etc, except as an embedded resource and Switching the app to background and then to foreground again forces an app restart. This is due to the fact that the stream closes. 
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