More Prism stuff

Example/MainWindow.xaml

@@ -3,22 +3,41 @@
     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:i="http://schemas.microsoft.com/expression/2010/interactivity"
+    xmlns:local="clr-namespace:Example"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:prism="http://prismlibrary.com/"
     Title="MainWindow"
     Width="800"
     Height="450"
+    d:DataContext="{d:DesignInstance local:MainWindowViewModel}"
+    prism:ViewModelLocator.AutoWireViewModel="True"
     Background="#E20074"
-    ContentRendered="MainWindow_OnContentRendered"
     mc:Ignorable="d">
+    <i:Interaction.Triggers>
+        <i:EventTrigger EventName="ContentRendered">
+            <i:InvokeCommandAction Command="{Binding UpdateCommand}" CommandParameter="True" />
+        </i:EventTrigger>
+    </i:Interaction.Triggers>
     <StackPanel>
-        <Button Margin="10" FontSize="24" Content="Update" Click="ButtonBase_OnClick"></Button>
-        <TextBlock Margin="20" Text=":-)" FontSize="60" HorizontalAlignment="Center" RenderTransformOrigin="0.5,0.5" >
+        <Button
+            Margin="10"
+            Command="{Binding UpdateCommand}"
+            CommandParameter="False"
+            Content="Update"
+            FontSize="24" />
+        <TextBlock
+            Margin="20"
+            HorizontalAlignment="Center"
+            FontSize="60"
+            RenderTransformOrigin="0.5,0.5"
+            Text=":-)">
             <TextBlock.RenderTransform>
                 <TransformGroup>
-                    <ScaleTransform/>
-                    <SkewTransform/>
-                    <RotateTransform Angle="90"/>
-                    <TranslateTransform/>
+                    <ScaleTransform />
+                    <SkewTransform />
+                    <RotateTransform Angle="90" />
+                    <TranslateTransform />
                 </TransformGroup>
             </TextBlock.RenderTransform>
         </TextBlock>