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/samples/snippets/visualbasic/wpf/introduction-to-wpf/introduction-to-wpf_17.vb

@@ -0,0 +1,20 @@
+Imports System.Windows ' Window, RoutedEventArgs, MessageBox
+
+Namespace SDKSample
+
+    Public Class ControlTemplateButtonWindow
+        Inherits Window
+
+        Public Sub New()
+
+            InitializeComponent()
+
+        End Sub
+
+        Private Sub button_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
+            MessageBox.Show("Hello, Windows Presentation Foundation!")
+        End Sub
+
+    End Class
+
+End Namespace

dotnet-desktop-guide/samples/snippets/visualbasic/wpf/introduction-to-wpf/introduction-to-wpf_2.vb

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+Namespace SDKSample
+
+    Class Person
+
+        Private _name As String = "No Name"
+
+        Public Property Name() As String
+            Get
+                Return _name
+            End Get
+            Set(ByVal value As String)
+                _name = value
+            End Set
+        End Property
+
+    End Class
+
+End Namespace

dotnet-desktop-guide/samples/snippets/visualbasic/wpf/introduction-to-wpf/introduction-to-wpf_34.vb

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+imports System 'EventArgs
+imports System.Windows 'DependencyObject, DependencyPropertyChangedEventArgs, 
+                       ' FrameworkPropertyMetadata, PropertyChangedCallback, 
+                       ' RoutedPropertyChangedEventArgs
+imports System.Windows.Controls 'UserControl
+
+Namespace SDKSample
+
+    ' Interaction logic for NumericUpDown.xaml
+    Partial Public Class NumericUpDown
+        Inherits System.Windows.Controls.UserControl
+
+        'NumericUpDown user control implementation
+
+    End Class
+
+End Namespace

dotnet-desktop-guide/samples/snippets/visualbasic/wpf/introduction-to-wpf/introduction-to-wpf_6.vb

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+Imports System.Windows ' Window
+
+Namespace SDKSample
+
+    Partial Public Class DataBindingWindow
+        Inherits Window
+
+        Public Sub New()
+            InitializeComponent()
+
+            ' Create Person data source
+            Dim person As Person = New Person()
+
+            ' Make data source available for binding
+            Me.DataContext = person
+
+        End Sub
+
+    End Class
+
+End Namespace

dotnet-desktop-guide/samples/snippets/visualbasic/wpf/introduction-to-wpf/introduction-to-wpf_8.vb

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+Imports System.Windows ' Window, MessageBox
+Imports System.Windows.Input ' MouseButtonEventArgs
+
+Namespace SDKSample
+
+    Public Class EllipseEventHandlingWindow
+        Inherits Window
+
+        Public Sub New()
+            InitializeComponent()
+        End Sub
+
+        Private Sub clickableEllipse_MouseUp(ByVal sender As Object, ByVal e As MouseButtonEventArgs)
+            MessageBox.Show("You clicked the ellipse!")
+        End Sub
+
+    End Class
+
+End Namespace