Initial WPF content migrated (#17)

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

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

@@ -0,0 +1,28 @@
+---
+title: "Menu"
+ms.date: "03/30/2017"
+f1_keywords: 
+  - "AutoGeneratedOrientationPage"
+helpviewer_keywords: 
+  - "Menu control [WPF]"
+  - "controls [WPF], Menu"
+ms.assetid: 4317fb80-408c-47c7-9223-b29e4742c4ee
+---
+# Menu
+A <xref:System.Windows.Controls.Menu> is a control that allows hierarchical organization of elements associated with commands or event handlers. Each <xref:System.Windows.Controls.Menu> can contain multiple <xref:System.Windows.Controls.MenuItem> controls. Each <xref:System.Windows.Controls.MenuItem> can invoke a command or invoke a `Click` event handler. A <xref:System.Windows.Controls.MenuItem> can also have multiple <xref:System.Windows.Controls.MenuItem> elements as children, forming a submenu.  
+  
+ The following illustration shows the three different states of a menu control. The default state is when no device such as a mouse pointer is resting on the <xref:System.Windows.Controls.Menu>. The focus state occurs when the mouse pointer is hovering over the <xref:System.Windows.Controls.Menu> and pressed state occurs when a mouse button is clicked over the <xref:System.Windows.Controls.Menu>.  
+  
+ ![Menu states](./media/ss-ctl-menu.gif "SS_CTL_menu")  
+Menus in different states  
+  
+## In This Section  
+ [Menu Overview](menu-overview.md)  
+  
+## Reference  
+ <xref:System.Windows.Controls.Menu>  
+  <xref:System.Windows.Controls.MenuItem>  
+  <xref:System.Windows.Controls.Primitives.MenuBase>  
+  <xref:System.Windows.Controls.ContextMenu>  
+  
+## Related Sections