[WASM] Custom control not displayed

[limeniye]

I created Uno library for my custom controls.

In that library-project I realized empty custom control:

    public partial class TestCustomControl : Control
    {
        public TestCustomControl() => this.DefaultStyleKey = typeof(TestCustomControl);
    }

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:local="using:MyCustomControls">

    <Style TargetType="local:TestCustomControl">
        <Setter Property="Background" Value="Red"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="local:TestCustomControl">
                    <Grid Background="{TemplateBinding Background}">
                        
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

</ResourceDictionary>

After that I created Generic.xaml:

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
    <ResourceDictionary.MergedDictionaries>
    
        <ResourceDictionary Source="ms-appx:///MyCustomControls/TestCustomControlXaml.xaml"/>
        
    </ResourceDictionary.MergedDictionaries>
</ResourceDictionary>

I linked Generic.xaml to the App.xaml

<Application x:Class="MyUnoProject.App" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
	
    <Application.Resources>
	
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
            
                <XamlControlsResources xmlns="using:Microsoft.UI.Xaml.Controls"/>

                <ResourceDictionary Source="ms-appx:///MyCustomControls/Themes/Generic.xaml"/>
                
            </ResourceDictionary.MergedDictionaries>
            
        </ResourceDictionary>
        
    </Application.Resources>

</Application>

I have implemented this element in a simple page:

<customControls:TestCustomControl Width="200" Height="200" Background="Blue"/>

I can build all projects except WASM.

Error	UXAML0001	The type {using:MyCustomControls}TestCustomControl could not be found	MyUnoProject.Wasm	

After that I added mc:Ignorable="d customControls", but I can't see this element on the page.

• Mobile
• WPF
• UWP
• WASM

[jeromelaban]

Thanks for the details. Can you attach a sample project to the issue?

[limeniye]

I want to apologize. I created a new project and this error was not there. After another two hours, I noticed that I forgot to link the WASM project. @jeromelaban, thank you for your attention.
Good evening!