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POError using XamlReader.Load() to create Prism Regions from file?
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  1. POError using XamlReader.Load() to create Prism Regions from file?
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    copied!<p>I'm using Silverlight 5 with Prism and MEF.</p> <p>I am trying to replace my shell at runtime by reading a XAML file, create an UIElement from it and replace the old shell's content with the new UIElement. I am using <code>XamlReader.Load()</code> for this.</p> <p>This works, until I try to create Prism regions.</p> <p>I can create a new Shell with just one prism region in it, but when I have two or more regions in the new shell, all I get is a blank screen in my browser, and no error messages.</p> <p>Is there a way to debug this? And why is this happening?</p> <p>Code:</p> <p>Creating the UIElement and replacing the shell (in Shell.xaml.cs):</p> <pre><code> DependencyObject rootObject = XamlReader.Load(XAMLFileString) as DependencyObject; UIElement customShell = rootObject as UIElement; this.Content = customShell; </code></pre> <p>This works (one region):</p> <pre><code>&lt;UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:prism="http://www.codeplex.com/prism"&gt; &lt;StackPanel&gt; &lt;ContentControl prism:RegionManager.RegionName="Region1"/&gt; &lt;/StackPanel&gt; &lt;/UserControl&gt; </code></pre> <p>This also works (two regular content controls):</p> <pre><code>&lt;UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:prism="http://www.codeplex.com/prism"&gt; &lt;StackPanel&gt; &lt;ContentControl Content="C1"/&gt; &lt;ContentControl Content="C2"/&gt; &lt;/StackPanel&gt; &lt;/UserControl&gt; </code></pre> <p>but this gives me a blank screen instead (two prism regions):</p> <pre><code>&lt;UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:prism="http://www.codeplex.com/prism"&gt; &lt;StackPanel&gt; &lt;ContentControl prism:RegionManager.RegionName="Region1"/&gt; &lt;ContentControl prism:RegionManager.RegionName="Region2"/&gt; &lt;/StackPanel&gt; &lt;/UserControl&gt; </code></pre>
 

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