I am in the process of preparing my product for alpha release and I am scrubbing my log files for anything that needs to be cleaned up prior to release. I am seeing two message in my log file that I cannot pinpoint in my code so I am suspecting it is coming from your code. I use NLog to log errors so I format Errors differently than general errors. I am seeing the following two errors being logged on app startup:

----------------------------------
2024-07-26 07:28:06.9283 ERROR 
  Call site:         App.LogException
  Method name:       MobyClient.WinUI.App.LogException
  Line:              0
  Exception Type:    System.ArgumentException
  Exception Message: The parameter is incorrect.

Assets/Fonts/Segoe UI.otf is not a valid absolute URI.
  Stack Trace:       at WinRT.ExceptionHelpers.<ThrowExceptionForHR>g__Throw|39_0(Int32 hr)
  Additional Info:   An error occurred
----------------------------------

and

----------------------------------
2024-07-26 07:28:06.8891 ERROR 
  Call site:         App.LogException
  Method name:       MobyClient.WinUI.App.LogException
  Line:              0
  Exception Type:    System.ArgumentException
  Exception Message: The parameter is incorrect.

Assets/Fonts/Segoe UI.ttf is not a valid absolute URI.
  Stack Trace:       at WinRT.ExceptionHelpers.<ThrowExceptionForHR>g__Throw|39_0(Int32 hr)
  Additional Info:   An error occurred
----------------------------------

In my MauiProgram.cd file, I load many fonts:

		_ = builder
			.UseMauiApp<App> ()
			.UseTelerik ()
			.ConfigureFonts (fonts => {
				_ = fonts.AddFont ("FontAwesome6Brands-Regular-400.otf", "FaBrands");
				_ = fonts.AddFont ("FontAwesome6Duotone-Solid-900.otf", "FaDuotone");
				_ = fonts.AddFont ("FontAwesome6Pro-Light-300.otf", "FaLight");
				_ = fonts.AddFont ("FontAwesome6Pro-Regular-400.otf", "FaRegular");
				_ = fonts.AddFont ("FontAwesome6Pro-Solid-900.otf", "FaSolid");
				_ = fonts.AddFont ("FontAwesome6Pro-Thin-100.otf", "FaThin");
				_ = fonts.AddFont ("OpenSans-Regular.ttf", "OpenSansRegular");
				_ = fonts.AddFont ("OpenSans-Semibold.ttf", "OpenSansSemibold");
				_ = fonts.AddFont ("Poppins-Black.otf", "PoppinsBlack");
				_ = fonts.AddFont ("Poppins-BlackItalic.otf", "PoppinsBlackItalic");
				_ = fonts.AddFont ("Poppins-Bold.otf", "PoppinsBold");
				_ = fonts.AddFont ("Poppins-BoldItalic.otf", "PoppinsBoldItalic");
				_ = fonts.AddFont ("Poppins-ExtraBold.otf", "PoppinsExtraBold");
				_ = fonts.AddFont ("Poppins-ExtraBoldItalic.otf", "PoppinsExtraBoldItalic");
				_ = fonts.AddFont ("Poppins-ExtraLight.otf", "PoppinsExtraLight");
				_ = fonts.AddFont ("Poppins-ExtraLightItalic.otf", "PoppinsExtraLightItalic");
				_ = fonts.AddFont ("Poppins-Italic.otf", "PoppinsItalic");
				_ = fonts.AddFont ("Poppins-Light.otf", "PoppinsLight");
				_ = fonts.AddFont ("Poppins-LightItalic.otf", "PoppinsLightItalic");
				_ = fonts.AddFont ("Poppins-Medium.otf", "PoppinsMedium");
				_ = fonts.AddFont ("Poppins-MediumItalic.otf", "PoppinsMediumItalic");
				_ = fonts.AddFont ("Poppins-Regular.otf", "PoppinsRegular");
				_ = fonts.AddFont ("Poppins-SemiBold.otf", "PoppinsSemiBold");
				_ = fonts.AddFont ("Poppins-SemiBoldItalic.otf", "PoppinsSemiBoldItalic");
				_ = fonts.AddFont ("Poppins-Thin.otf", "PoppinsThin");
				_ = fonts.AddFont ("Poppins-ThinItalic.otf", "PoppinsThinItalic");
				_ = fonts.AddFont ("Segoe-Ui.ttf", "SegoeUi");
				_ = fonts.AddFont ("Segoe-Ui-Bold.ttf", "SegoeUiBold");
				_ = fonts.AddFont ("Segoe-Ui-Regular.ttf", "SegoeUiRegular");
				_ = fonts.AddFont ("Segoe-Ui-Semibold.ttf", "SegoeUiSemibold");
				_ = fonts.AddFont ("Segoe-Ui-Semilight.ttf", "SegoeUiSemilight");
			})
			.ConfigureMobyApplication ();

As you can see, 'Assets/Fonts/Segoe UI.ttf' or 'Assets/Fonts/Segoe UI.otf' is a font I am loading. In fact, all of the 'Segoe' font names use a dash '-' instead of a space in the file name. Also, I only load 'ttf' fonts and not 'otf' fonts for Seqoe fonts. Telerik controls are the only non-standard controls I am using so I am suspecting this font name is being loaded by your controls somehow. Can you please confirm this?

Also, when I went to report this incident, I noticed that you had requested input from me on previous issues I have raised, but I never received any email from you requesting this information. Since I rarely log into this website for anything, I don't know how you expect people to answer your questions if they are not made more visible. Is there a way to subscribe to an issue so I see all updates? I looked over the complete set of items I can add to this issue and none of them seem to be related to answering questions from you. It would be helpful for you to send any and all updates on any issues that have been logged. I just scanned my entire set of email folders and other than messages from your sales department, no other messages were found. Just sayin'...

Asking for a webview which opens external links ( links with a target= element) in the same webview instead of it does do nothing onbios and android, but in windows opens it a browser window with that url of the link!

we need the functionality to overrule the target= function of a link. To the same webview. At this moment we need a hybridwebview functionality! And it would be very handy to have that in a telerik control!

best regards, Fandy

If this worked in earlier releases, it no longer does.

Using iOS Simulator (set to iPhone 15 iOS 17.4) - with a DataGrid as below, double-clicking the text cell will crash the app. I have not yet tried on a native device build (not simulator.)

<telerik:RadDataGrid.Columns>
    <telerik:DataGridTextColumn PropertyName="ObjectName" HeaderText="Name"/>
</telerik:RadDataGrid.Columns>

Microsoft Visual Studio 2022 v17.9.6

Microsoft.Maui.Controls 8.0.21

Full Stack Trace:

Runtime exception with Microsoft .NET 8.0.100:

 *** NSForwarding: warning: object 0x600002199c20 of class 'Telerik_Maui_Controls_Compatibility_ChartRenderer_iOS_TKExtendedChart' does not implement methodSignatureForSelector: -- trouble ahead
*** NSForwarding: warning: object 0x600002199c20 of class 'Telerik_Maui_Controls_Compatibility_ChartRenderer_iOS_TKExtendedChart' does not implement doesNotRecognizeSelector: -- abort

The issue occurs on:

Nuget - Telerik.UI.for.Maui 6.7.0
Maui Version 8.0.7
.NET SDK 8.0.100
Simulator - iOS 16.4 and 17.2 (Version 15.2 -1019)

Best regards

When I compile my project with <WindowsPackageType>None</WindowsPackageType> option, icons ar enot displayed in Telerik controls (like richeditor)

Same project compiled with package  and deployed are ok

When the Source of a RadRichTextEditor is set, the TextColor is always black.  Tested on Android:

  <Grid HeightRequest="400"
        WidthRequest="300">
    <telerik:RadRichTextEditor x:Name="RichTextEditorControl"
                               Source="with source text"
                               TextColor="White"
                               BackgroundColor="Green" />
  </Grid>

I have an html file with <img src="./images/ForkliftGateMainPage.png" alt="MainPage" width="1600" title="Page principale" />

The image is displayed when I open it with my browser, but not displayed with RadRichtextEditor, Why ?

Repro steps:

Put a grid inside a RadBusyIndicator with a button.  On a button click, set IsBusy to true, change the height of the grid, and set IsBusy to false.  The grid height will not be updated.

Another way to reproduce is to add children views to the grid while IsBusy is true.  The children will not be rendered after it's done

This is a regression from a recent Telerik update

If I uncomment "HorizontalStackLayout", the image is not displayed.

I want to display 2 Imageeditor in the same tabview, how to do this ?

        <telerik:RadTabView 
            telerik:RadDockLayout.Dock="Left"
            x:Name="tabView" AutomationId="tabView"
            HeaderPosition="Bottom"
            >
            <telerik:TabViewItem HeaderText="Face 1">
                <!--<telerik:RadImageEditorToolbar ImageEditor="{x:Reference imageEditor}">
                    </telerik:RadImageEditorToolbar>-->

                <!--<HorizontalStackLayout>-->
                    <telerik:RadImageEditor x:Name="imageEditor1" 
                        MinZoomLevel="0.1" 
                        MaxZoomLevel="20"
                        Source = "{Binding DisplayedPhoto, TargetNullValue={versares:ImageResource Images.palette.png}}"
                                       />

                    <!--<telerik:RadImageEditor x:Name="imageEditor2" 
                        MinZoomLevel="0.1" 
                        MaxZoomLevel="20"
                        Source = "{Binding DisplayedPhoto, TargetNullValue={versares:ImageResource Images.palette.png}}"
                                       />-->
                <!--</HorizontalStackLayout>-->

            </telerik:TabViewItem>
            <telerik:TabViewItem HeaderText="Face 2">
                <Label Margin="10" Text="This is the content of the Folder tab" />
            </telerik:TabViewItem>
        </telerik:RadTabView>

I would like a control to handle Currency that works with the UICulture

In the US it would show the input as $ ____.00. or ____.00 (USD) based on UICulture

in other countries it would show the currency symbol based on the UICulture

This control should work will all other controls such as grid column input

I don't have definitive proof on when it started but I did update my Telerik.UI.for.Maui NuGet package from Trial to an official licensed version and that is when I started to see bizarre behavior for the ButtonToolbarItem control. Suddenly, NO FONT ICONS show! Also, in my log file, I see this:

Unable to load font 'TelerikFont'.

I don't have this font installed in my Maui Resources\Fonts folder nor do I load it in my MauiProgram ConfigureFonts extension method for the MauiApp builder. It was working until two days ago.

I turned on BLAST mode in my debugger where I was seeing exceptions being thrown all over the place with regard to loading fonts. I am up against a crucial investor funding demo so I do not have the time to dig down to the core of this issue at the moment. This issue I am logging is there for you to ask me questions on things I can verify so we can work on this together.

What are some of the things you need me to do or look at to report back... The fact that NONE of my FontImageSource icons are being displayed in my RadToolBar ButtonToolbarItems is suspect. The reporting of the TelerikFont is even more suspect. I wasted a TON of valuable time today trying to find a workaround, but none could be found. GitHub Copilot and ChatGPT kept giving me bogus answers for properties on your controls that don't exist which only exacerbated my frustration. I tried to use PNG files as the icon, but your ButtonToolbarItem image source only allows font image sources which I think is a very bad design decision on your behalf. What if a font does not provide the correct image I wish to display? You really should allow png images to be used on these buttons!!!

Like I said, it was working up until several days ago...

Thanks, Steve

Hello,

I'm using an horizontal listview, it's working well. But when I put in in a RadDocklayout, nothing is displayed. What am I doing wrong ?

See attached project.

Other question : is it possible to have cell fitting to the text inside the listview (ItemLength="*") ?

Regards

I have three RadDataForms in my login workflow. I have tried all of the various CommitModes and ValidationModes to prevent this error, but nothing seems to prevent these errors from manifesting.

I have a data form that has two fields: Username and Password. When this form is FIRST displayed, what appears to be validation errors (formatted error log output):

----------------------------------
2023-04-26 09:22:18.9231 WARN  
  Call site:         BindingDiagnostics.SendBindingFailure
  Method name:       Microsoft.Maui.Controls.Xaml.Diagnostics.BindingDiagnostics.SendBindingFailure
  Line:              0
  Exception Type:    
  Exception Message: 
  Stack Trace:    
  Additional Info:   '(null)' cannot be converted to type 'System.Boolean'
----------------------------------
----------------------------------
2023-04-26 09:22:18.9330 WARN  
  Call site:         BindingDiagnostics.SendBindingFailure
  Method name:       Microsoft.Maui.Controls.Xaml.Diagnostics.BindingDiagnostics.SendBindingFailure
  Line:              0
  Exception Type:    
  Exception Message: 
  Stack Trace:    
  Additional Info:   '(null)' cannot be converted to type 'System.Boolean'
----------------------------------

Then, I have a different RadData form that has five fields, First Name, Second Name, Email Address, Password and Password Confirmation. This leads to:

----------------------------------
2023-04-26 09:22:46.6821 WARN  
  Call site:         BindingDiagnostics.SendBindingFailure
  Method name:       Microsoft.Maui.Controls.Xaml.Diagnostics.BindingDiagnostics.SendBindingFailure
  Line:              0
  Exception Type:    
  Exception Message: 
  Stack Trace:    
  Additional Info:   '(null)' cannot be converted to type 'System.Boolean'
----------------------------------
----------------------------------
2023-04-26 09:22:46.6821 WARN  
  Call site:         BindingDiagnostics.SendBindingFailure
  Method name:       Microsoft.Maui.Controls.Xaml.Diagnostics.BindingDiagnostics.SendBindingFailure
  Line:              0
  Exception Type:    
  Exception Message: 
  Stack Trace:    
  Additional Info:   '(null)' cannot be converted to type 'System.Boolean'
----------------------------------
----------------------------------
2023-04-26 09:22:46.7018 WARN  
  Call site:         BindingDiagnostics.SendBindingFailure
  Method name:       Microsoft.Maui.Controls.Xaml.Diagnostics.BindingDiagnostics.SendBindingFailure
  Line:              0
  Exception Type:    
  Exception Message: 
  Stack Trace:    
  Additional Info:   '(null)' cannot be converted to type 'System.Boolean'
----------------------------------
----------------------------------
2023-04-26 09:22:46.7018 WARN  
  Call site:         BindingDiagnostics.SendBindingFailure
  Method name:       Microsoft.Maui.Controls.Xaml.Diagnostics.BindingDiagnostics.SendBindingFailure
  Line:              0
  Exception Type:    
  Exception Message: 
  Stack Trace:    
  Additional Info:   '(null)' cannot be converted to type 'System.Boolean'
----------------------------------
----------------------------------
2023-04-26 09:22:46.7174 WARN  
  Call site:         BindingDiagnostics.SendBindingFailure
  Method name:       Microsoft.Maui.Controls.Xaml.Diagnostics.BindingDiagnostics.SendBindingFailure
  Line:              0
  Exception Type:    
  Exception Message: 
  Stack Trace:    
  Additional Info:   '(null)' cannot be converted to type 'System.Boolean'
----------------------------------

These errors are all encountered on the form's first load. Nothing has been entered into any field. No call to any validation methods is made. 

Here is how my general data form configuration is done:

<telerik:RadDataForm
    x:FieldModifier="public"
    x:Name="SignUpForm"
    Grid.Row="0"
    CommitMode="Explicit"
    Loaded="SignUpFormOnLoaded"
    Margin="0,5,0,0"
    Style="{StaticResource DataFormStyle}"
    ValidationMode="Explicit">

I have attached the three classes I use as the binding context. I have tried None, Explicit, and LostFocus as settings for the two modes and it has no effect. While these errors look harmless and the form does provide error-checked data upon validation, I simply hate having any unnecessary errors in my log files.

What can I do to prevent these errors?

Thanks!

Steve

What is the best way to load a byte[] (which is a jpeg file) in the ImageEditor.

Ideally I want to transform the byte[] to a Bitmap (easy), for storage purpose

            using Stream stream = new MemoryStream(e.Buffer);
            using Bitmap image = new Bitmap(stream);

And then display the bitmap, but I don't know how totransform it to an ImageSource.

Regards.

Is it possible to use GestureRecognizers in ImageEditor ? I tried this, but OnImageTapped is not called.

<?xml version="1.0" encoding="utf-8" ?>
<ContentView xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:telerik="http://schemas.telerik.com/2022/xaml/maui"
             xmlns:versares="clr-namespace:SharedResources;assembly=SharedResources"
             x:Class="PalletGate.Views.SingleEditor">
    <Grid ColumnDefinitions="*">

        <telerik:RadImageEditor x:Name="imageEditor1" 
                        MinZoomLevel="0.1" 
                        MaxZoomLevel="20"
                        Grid.Column="0"
                        >
            <telerik:RadImageEditor.GestureRecognizers>
                <TapGestureRecognizer Tapped="OnImageTapped" />
            </telerik:RadImageEditor.GestureRecognizers>
        </telerik:RadImageEditor>
    </Grid>
</ContentView>

Code behind :

showing extra border before dropdown arrow in version 5.0.0 and higher. see below image