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I've been playing around with user controls and built myself a little control with just a textbox and a button called "SpecialControlObject" to test something.

XAML:

<UserControl x:Class="CustomControlTest.SpecialControlObject"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
         xmlns:local="clr-namespace:CustomControlTest"
         mc:Ignorable="d" 
         d:DesignHeight="100" d:DesignWidth="100">
    <Grid>
        <StackPanel>
            <TextBox Width="50"/>
            <Button Height="20" Width="20" Margin="0,20,0,0"/>
        </StackPanel>
    </Grid>
</UserControl>

Everything fine so far.

I now implemented it into my MainWindow just like that:

XAML:

<Window x:Class="CustomControlTest.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:CustomControlTest"
        mc:Ignorable="d"
        Title="MainWindow" Height="300" Width="300">
    <Grid>
        <local:SpecialControlObject x:Name="UserControl1" Height="100" Width="100"/>
    </Grid>
</Window>

If I compile this, everything works fine and the user control gets displayed correctly.

But the Visual Studio designer can't display it and throws following error:

"The element UserControl1 of type CustomControlTest.SpecialControlObject could not be displayed."

As well as VS giving me the following:

"Could not load file or assembly 'CustomControlTest, Version1.0.0.0, Culture=neutral, PublicKeyToken=null.' The module was expected to contain an assembly manifest."

I've added a app.manifest file, and changed the user controls Copy To Output Directory property to Copy always but this doesn't seem to fix it.

What am I missing here?

Vultuxe
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Pfanna
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0 Answers0