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    <p>I doubt that this is what you really want to do, if you have different ViewModels you can still bind your control to a collection of those ViewModels and template them as necessary.</p> <p>You just need to create different DataTemplates at different level, here is an example (which directly uses models but that should not matter right now):</p> <pre><code>&lt;TabControl&gt; &lt;TabControl.ItemsSource&gt; &lt;!-- This is just sample data, normally you would bind this to an ObservableCollection&lt;ViewModelBase&gt; or something similar --&gt; &lt;x:Array Type="{x:Type sys:Object}"&gt; &lt;local:Employee Name="John" Occupation="Programmer"/&gt; &lt;local:Employee Name="Steve" Occupation="Coffee Getter"/&gt; &lt;local:Machine Manufacturer="iCorp" Model="iMachine"/&gt; &lt;local:Machine Manufacturer="iCorp" Model="iMachine G2"/&gt; &lt;local:Employee Name="Marc" Occupation="GUI Designer"/&gt; &lt;/x:Array&gt; &lt;/TabControl.ItemsSource&gt; &lt;TabControl.Resources&gt; &lt;!-- These datatemplates define the tab-header appearance, by placing them in the TabControl.Resources and setting the DataType they get applied automatically, just make one light-weight template for each ViewModel --&gt; &lt;DataTemplate DataType="{x:Type local:Employee}"&gt; &lt;TextBlock&gt; &lt;Run Text="{Binding Name}"/&gt; &lt;Run Text="("/&gt; &lt;Run Text="{Binding Occupation}"/&gt; &lt;Run Text=")"/&gt; &lt;/TextBlock&gt; &lt;/DataTemplate&gt; &lt;DataTemplate DataType="{x:Type local:Machine}"&gt; &lt;TextBlock&gt; &lt;Run Text="{Binding Manufacturer}"/&gt; &lt;Run Text=" - "/&gt; &lt;Run Text="{Binding Model}"/&gt; &lt;/TextBlock&gt; &lt;/DataTemplate&gt; &lt;ContentControl x:Key="MainContent" Content="{Binding}"&gt; &lt;ContentControl.Resources&gt; &lt;!-- This represents the content of the TabItems, you probably do not need to create DataTemplates but since you could use a View of the ViewModels instead --&gt; &lt;DataTemplate DataType="{x:Type local:Employee}"&gt; &lt;StackPanel&gt; &lt;TextBlock Text="{Binding Name}"/&gt; &lt;TextBlock Text="{Binding Occupation}"/&gt; &lt;TextBlock Text="{Binding Id}"/&gt; &lt;TextBlock Text="{Binding IsActive}"/&gt; &lt;/StackPanel&gt; &lt;/DataTemplate&gt; &lt;DataTemplate DataType="{x:Type local:Machine}"&gt; &lt;StackPanel&gt; &lt;TextBlock Text="{Binding Manufacturer}"/&gt; &lt;TextBlock Text="{Binding Model}"/&gt; &lt;TextBlock Text="{Binding VintageYear}"/&gt; &lt;TextBlock Text="{Binding Price}"/&gt; &lt;/StackPanel&gt; &lt;/DataTemplate&gt; &lt;/ContentControl.Resources&gt; &lt;/ContentControl&gt; &lt;/TabControl.Resources&gt; &lt;TabControl.ContentTemplate&gt; &lt;!-- Setting the content to the resource --&gt; &lt;DataTemplate&gt; &lt;Border&gt; &lt;StaticResource ResourceKey="MainContent"/&gt; &lt;/Border&gt; &lt;/DataTemplate&gt; &lt;/TabControl.ContentTemplate&gt; &lt;/TabControl&gt; </code></pre> <p>I might try to get the specifics for MVVM implemented but this hopefully already gives an idea of how it can be approached.</p> <p>You might want to set up a template selector (<code>TabControl.ContentTemplateSelector</code>) to get the right views for your ViewModels.</p>
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