Initial WPF content migrated (#17)

* Reset branch for WPF changes

* Convert BMP to PNG; fix link-out-of-scope err

* Add snippets for WPF... 6794 files!!!!

* Add missing snippets

* update file updated between migration

* Fix paths to include

* update breadcrumb and toc

* fix index links

* fix index links

* fix index links

* fix markdown

dotnet-desktop-guide/framework/wpf/controls/panel.md

@@ -0,0 +1,39 @@
+---
+title: "Panel"
+ms.date: "03/30/2017"
+f1_keywords: 
+  - "AutoGeneratedOrientationPage"
+helpviewer_keywords: 
+  - "controls [WPF], Panel"
+  - "layout [WPF], Panel control"
+  - "Panel control [WPF]"
+ms.assetid: 792943c5-335d-49dd-aa5b-ec1582a10088
+---
+# Panel
+<xref:System.Windows.Controls.Panel> is the base class for all elements that support application layout in [!INCLUDE[TLA#tla_winclient](../../../includes/tlasharptla-winclient-md.md)].  
+  
+## In This Section  
+ [Panels Overview](panels-overview.md)  
+ [How-to Topics](panel-how-to-topics.md)  
+  
+## Reference  
+ <xref:System.Windows.Controls.Panel>  
+  
+ <xref:System.Windows.Controls.Canvas>  
+  
+ <xref:System.Windows.Controls.DockPanel>  
+  
+ <xref:System.Windows.Controls.Grid>  
+  
+ <xref:System.Windows.Controls.StackPanel>  
+  
+ <xref:System.Windows.Controls.VirtualizingStackPanel>  
+  
+ <xref:System.Windows.Controls.WrapPanel>  
+  
+## Related Sections  
+ [Layout](../advanced/layout.md)  
+  
+ [Walkthrough: My first WPF desktop application](../getting-started/walkthrough-my-first-wpf-desktop-application.md)  
+  
+ [ScrollViewer Overview](scrollviewer-overview.md)