Initial publish of WinForms for .NET 5. (#96)

* Migrate inprogress winforms contnet from docs

* Fix preview note

* Fix vb code

* Minor fixes to keyboard articles

* Minor adjustment to overview

* Test redirects for 4.0 -> 5.0

* adjust links

* Add mouse input section winforms (#81)

* Update projects to .NET 5

* Update keyboard desc

* Finish mouse events

* Add remaining mouse articles;code

* finish mouse input

* minor fixes

* Remove branch restriction (#82)

* Update build-validation.yml (#84)

* Update build-validation.yml (#85)

* Fix vb proj

* Add WinForms tutorial (#91)

* redirect between overview

* New create an app tutorial

* Fix markdown

* Fix preserve view setting

* Add forms articles (#93)

* Add forms articles

* Fix warnings

* Winforms publish (#95)

* Prep TOC for publish

* Updated date

* Automatic how-to topic type

* Update desc/headers

* Fix links

* Fix build errors

* Add preview note

* Update toc landing page

* Convert old style project files

* update download links

* Apply suggestions from code review

Co-authored-by: Genevieve Warren <[email protected]>

* Adjust number key

* Update dotnet-desktop-guide/net/winforms/overview/index.md

* Try toc position task via bookmark

* Improve images

* Remove sentence

* File redirects

Co-authored-by: Genevieve Warren <[email protected]>

dotnet-desktop-guide/net/winforms/input-keyboard/how-to-handle-forms.md

@@ -0,0 +1,34 @@
+---
+title: "Handle keyboard input at the Form level"
+description: Learn how to handle keyboard input for your Windows Forms at the form level, before messages reach a control.
+ms.date: 10/26/2020
+dev_langs: 
+  - "csharp"
+  - "vb"
+helpviewer_keywords: 
+  - "keyboard input [Windows Forms], at form level"
+  - "Windows Forms, handling keyboard input"
+  - "keyboards [Windows Forms], form-level input"
+---
+
+# How to handle keyboard input messages in the form (Windows Forms .NET)
+
+Windows Forms provides the ability to handle keyboard messages at the form level, before the messages reach a control. This article shows how to accomplish this task.
+
+[!INCLUDE [desktop guide under construction](../../includes/desktop-guide-preview-note.md)]
+
+## Handle a keyboard message
+
+Handle the <xref:System.Windows.Forms.Control.KeyPress> or <xref:System.Windows.Forms.Control.KeyDown> event of the active form and set the <xref:System.Windows.Forms.Form.KeyPreview%2A> property of the form to `true`. This property causes the keyboard to be received by the form before they reach any controls on the form. The following code example handles the <xref:System.Windows.Forms.Control.KeyPress> event by detecting all of the number keys and consuming <kbd>1</kbd>, <kbd>4</kbd>, and <kbd>7</kbd>.
+
+:::code language="csharp" source="snippets/how-to-handle-forms/csharp/Form1.cs" id="HandleKey":::
+:::code language="vb" source="snippets/how-to-handle-forms/vb/Form1.vb" id="HandleKey":::
+
+## See also
+
+- [Overview of using the keyboard (Windows Forms .NET)](overview.md)
+- [Using keyboard events (Windows Forms .NET)](events.md)
+- <xref:System.Windows.Forms.Keys>
+- <xref:System.Windows.Forms.Control.ModifierKeys>
+- <xref:System.Windows.Forms.Control.KeyDown>
+- <xref:System.Windows.Forms.Control.KeyPress>