I have rec.xaml set as an embedded resource.   Here is its XAML:

<UserControl x:Class="SL.rec"
    xmlns="http://schemas.microsoft.com/client/2007"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Width="400" Height="300">
    <Grid x:Name="LayoutRoot" Background="White">
        <Rectangle Stroke="Red" Fill="Blue"/>
    </Grid>
</UserControl>

In the main page, page.xaml.cs, I have:

string rec;
Stream s = this.GetType().Assembly.GetManifestResourceStream("SL.rec.xaml");     
rec = new StreamReader(s).ReadToEnd();

Rectangle theRectangle = (Rectangle)XamlReader.Load(rec);

I get this error on the above line:

A first chance exception of type 'System.Windows.Markup.XamlParseException' occurred in System.Windows.dll
Additional information: AG_E_UNKNOWN_ERROR [Line: 4 Position: 29]

I'd like to load the rectangle into the page.xaml, which looks like this:

 <UserControl x:Class="SL.Page"
    xmlns="http://schemas.microsoft.com/client/2007"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Width="400" Height="300" x:Name="_root">
    <Grid x:Name="LayoutRoot" Background="White">
     <Button HorizontalAlignment="Stretch" VerticalAlignment="Top" Content="Click Here" Height="50" x:Name="_button" Click="_button_click"/>    </Grid>
</UserControl>

Any suggestions?

The problem is that XamlReader can't do two things you're asking it to.  It can't start with a UserControl and can't have a backing class.  If you move the xmlns and xmlns:x to the Grid and strip the UserControl it will work.

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Shawn Wildermuth
C# MVP, MCSD, Speaker and Author

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