Adjust project structure

src/Shared/HandyControlDemo_Shared/UserControl/Styles/TreeViewDemoCtl.xaml

@@ -0,0 +1,15 @@
+<UserControl x:Class="HandyControlDemo.UserControl.TreeViewDemoCtl"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:controls="clr-namespace:HandyControl.Controls;assembly=HandyControl"
+             Background="{DynamicResource RegionBrush}">
+    <controls:TransitioningContentControl>
+          <TreeView Width="200" Margin="32" ItemsSource="{Binding DataList}">
+              <TreeView.ItemTemplate>
+                  <HierarchicalDataTemplate ItemsSource="{Binding DataList}">
+                      <TextBlock Text="{Binding Name}"/>
+                  </HierarchicalDataTemplate>
+              </TreeView.ItemTemplate>
+          </TreeView>
+    </controls:TransitioningContentControl>
+</UserControl>