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copied!<p>As Jakob Christensen noted, you can load any XAML you want using <code>XamlReader.Load</code>. This doesn't apply only for styles, but <code>UIElement</code>s as well. You just load the XAML like:</p> <pre><code>UIElement rootElement; FileStream s = new FileStream(fileName, FileMode.Open); rootElement = (UIElement)XamlReader.Load(s); s.Close(); </code></pre> <p>Then you can set it as the contents of the suitable element, e.g. for</p> <pre><code><Window x:Class="MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Foo Bar"> <Grid x:Name="layoutGrid">  </Grid> </Window> </code></pre> <p>you could add the <code>rootElement</code> in the <code>grid</code> with:</p> <pre><code>layoutGrid.Children.Add(rootElement); layoutGrid.SetColumn(rootElement, COLUMN); layoutGrid.SetRow(rootElement, ROW); </code></pre> <p>You'll naturally also have to connect any events for elements inside the <code>rootElement</code> manually in the code-behind. As an example, assuming your <code>rootElement</code> contains a <code>Canvas</code> with a bunch of <code>Path</code>s, you can assign the <code>Path</code>s' <code>MouseLeftButtonDown</code> event like this:</p> <pre><code>Canvas canvas = (Canvas)LogicalTreeHelper.FindLogicalNode(rootElement, "canvas1"); foreach (UIElement ui in LogicalTreeHelper.GetChildren(canvas)) { System.Windows.Shapes.Path path = ui as System.Windows.Shapes.Path; if (path != null) { path.MouseLeftButtonDown += this.LeftButtonDown; } } </code></pre> <p>I've not tried switching XAML files on the fly, so I cannot say if that'll really work or not.</p>

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