Dear Telerik-Team

with the new version 9.0.0 on Android the Scheduler doesn't display the Date/Timepicker on creating/editing an new appointment. The Date/Timepicker Popup is only displayed when the "EditAppointmentDialog" is closed. You can easy reproduce it. Just add the Scheduler to a plain project.

I have attached a VS solution where you can reproduce it.

Thanks for helping/fixing it as soon as possible. I need this new version becasue of another bugfix for scheduler in it...

When creating a .NET MAUI blank net 9 template and adding for example PDF toolbar, the toolbar icons do not display as the app is build as unpackaged.

Solution:

Change the package type in the .csproj file:

from: 
<WindowsPackageType>None</WindowsPackageType>

to:
<WindowsPackageType>MSIX</WindowsPackageType>

"System.IO.FileNotFoundException: 'Could not load file or assembly 'Microsoft.Maui.Controls.Compatibility, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. The system cannot find the file specified.'"

Occurs when creating a blank .net maui project using .net9 and adding Telerik MAUI NuGet Package latest version 8.0.0

Repro steps:

1. Create a new dotnet9 basic project in visual studio.
2. Launch it on windows. it runs.
3. Add the Telerik.UI.for.Maui.Trial package, version 8. (don't bother adding the UseTelerik line to MauiProgram.cs, it'll fail either way).
4. Clean and Rebuild the solution.
5. Debug the app on windows again. It fails on launch with a file not found error that seems to relate to:
"Exception thrown: 'System.IO.FileNotFoundException' in Telerik.Maui.Controls.Compatibility.dll"
System.IO.FileNotFoundException: 'Could not load file or assembly 'Microsoft.Maui.Controls.Compatibility, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. The system cannot find the file specified.'

After updating our Maui application to Maui version 8.0.90, the Entry controls in the WinUI version stopped responding to WidthRequest, HorizontalOptions, or parent container sizes. I thought it was just a Maui problem, but in the relevant issue's notes, I saw that users were having trouble duplicating it unless Telerik UI for .NET Maui was installed (https://github.com/dotnet/maui/issues/24783).

So I created a test app that contains a few Entry controls in various containers:

<?xml version="1.0" encoding="utf-8"?>

<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="WinUIEntryBug.MainPage">

    <ScrollView>
        <VerticalStackLayout
            Padding="30,0"
            Spacing="25">

            <Border>
                <Entry />
            </Border>

            <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*" />
                </Grid.ColumnDefinitions>

                <Entry Grid.Column="0"></Entry>
            </Grid>

            <Frame>
                <Entry />
            </Frame>

            <Entry />
        </VerticalStackLayout>
    </ScrollView>

</ContentPage>

Without the Telerik components added to the project, the Entry boxes render correctly:

But, when I add a reference to Telerik UI for .NET Maui version 7.1.0 (latest at the time this was written), I get this:

Note: I didn't even add UseTelerik() to the Builder in the MauiProgram.cs, just added the Nuget package.

Changing the WidthRequest, HorizontalOptions, MinWidthRequest, etc. does not affect their size. They do render correctly in iOS and Android, though.

If I then remove the UI for .NET Maui Nuget package, they go back to working.

In our main application, we are heavily dependent on Telerik components and have a substantial number of customers using the Windows version of our application, so this heavily impacts our ability to ship. Particularly since the Maui 8.0.90 fixes other bugs that we needed addressed.

I've attached my sample project with the Telerik UI for .NET Maui package installed. You can remove it to see the normal operation of the Entry boxes.

This was a regression when I upgraded to 7.1.0. 

Before, when the editor was empty and had a height set, you could tap anywhere to start editing.  Now, I can only start editing by tapping the top of the editor.

I tested this only on Android.

Add a VS Item Template for Login screen as in Telerik UI for Xamarin: VIsual Studio Item Templates.

We have discovered an error when you implement IWindowCreator and create custom window and connect viewmodel via AddSingleton approach

This is the stack-trace:

at System.ThrowHelper.ThrowArgumentOutOfRange_IndexMustBeLessException()

at System.Collections.Generic.List`1.get_Item(Int32 index)

at Telerik.Maui.RadScreen.GetPixelScale(DipScaleType dipScaleType)

at Telerik.Maui.Controls.RadScreenControls.GetPixelScale(VisualElement visualElement, DipScaleType dipScaleType)

at Telerik.Maui.Controls.SkiaSharp.SkiaPainter.GetPixelScale()

at Telerik.Maui.Controls.SkiaSharp.SkiaPainter..ctor(SkiaPainterCacheSettings cacheSettings)

at Telerik.Maui.Controls.Compatibility.DataGrid.MasterArranger..ctor(RadDataGrid dataGrid, NonLayoutPanel root, SkLayoutSlotProvider skLayoutSlotProvider)

at Telerik.Maui.Controls.Compatibility.DataGrid.RadDataGrid.InitArrangers()

at Telerik.Maui.Controls.Compatibility.DataGrid.RadDataGrid.Telerik.Maui.Controls.Compatibility.DataGrid.IGridView.AttachColumn(DataGridColumn column)

at Telerik.Maui.Controls.Compatibility.DataGrid.GridModel.AttachColumn(DataGridColumn column)

at Telerik.Maui.Controls.Compatibility.DataGrid.DataGridColumnCollection.AttachColumn(DataGridColumn column)

at Telerik.Maui.Controls.Compatibility.DataGrid.DataGridColumnCollection.InsertItem(Int32 index, DataGridColumn item)

at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)

at System.Reflection.MethodBaseInvoker.InvokeDirectByRefWithFewArgs(Object obj, Span`1 copyOfArgs, BindingFlags invokeAttr)

When programatically trying to add an item to RadComboBox.SelectedItems (in multiple selection mode) similar to this answer, we get an ArgumentOutOfRangeException on iOS.  It works fine on Android.

https://www.telerik.com/forums/radcombobox-binding-selecteditem-not-work-when-selectionmode-is-multiple

The stack trace is strange:

I know you are all working on this and are addressing the breaking changes between preview7 to RC1, I wanted to open this Feature Request so that I can be immediately notified when UI for MAUI RC1 support is ready to download and use.

Thank you,

Denis

Error clang++ exited with code 1:

ld: in /Users/.../Library/Caches/Xamarin/mtbs/builds/SDKBrowserMaui/.../obj/x64/Debug/net7.0-ios/iossimulator-arm64/linker-cache/TelerikUI.a(TKChartAnnotation.o), building for iOS Simulator, but linking in object file built for iOS, file '/Users/.../Library/Caches/Xamarin/mtbs/builds/SDKBrowserMaui/.../obj/x64/Debug/net7.0-ios/iossimulator-arm64/linker-cache/TelerikUI.a'

clang: error: linker command failed with exit code 1 (use -v to see invocation) SDKBrowserMaui C:\Program Files\dotnet\packs\Microsoft.iOS.Sdk\16.4.7089\targets\Xamarin.Shared.Sdk.targets 1274

Steps to reproduce:

Run the SDKBrowser example from the Telerik UI for .NET MAUI 6.1.0 package following this instruction: https://www.telerik.com/blogs/running-ios-simulator-windows-net-maui

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,

Nathan