Fix broken links - Feb 2022 (#7732)

Author: gewarren

xml/System.Windows.Controls.Primitives/CustomPopupPlacementCallback.xml

@@ -43,6 +43,6 @@
     <altmember cref="P:System.Windows.Controls.Primitives.Popup.CustomPopupPlacementCallback" />
     <altmember cref="P:System.Windows.Controls.ToolTip.CustomPopupPlacementCallback" />
     <altmember cref="P:System.Windows.Controls.ContextMenu.CustomPopupPlacementCallback" />
-    <related type="ExternalDocumentation" href="https://github.com/dotnet/dotnet-api-docs/tree/main/snippets/csharp/VS_Snippets_Wpf/PopupPositionSnippet/CS">Popup Placement Sample</related>
+    <related type="ExternalDocumentation" href="https://github.com/dotnet/dotnet-api-docs/tree/main/snippets/csharp/System.Windows.Controls/ContextMenu/CustomPopupPlacementCallback">Popup Placement Sample</related>
   </Docs>
 </Type>

xml/System.Windows.Controls.Primitives/Popup.xml

@@ -1225,7 +1225,7 @@
         <altmember cref="P:System.Windows.Controls.Primitives.Popup.Placement" />
         <altmember cref="P:System.Windows.Controls.Primitives.Popup.VerticalOffset" />
         <altmember cref="P:System.Windows.Controls.Primitives.Popup.HorizontalOffset" />
-        <related type="ExternalDocumentation" href="https://github.com/dotnet/dotnet-api-docs/tree/main/snippets/csharp/VS_Snippets_Wpf/PopupPositionSnippet/CS">Popup Placement Sample</related>
+        <related type="ExternalDocumentation" href="https://github.com/dotnet/dotnet-api-docs/tree/main/snippets/csharp/System.Windows.Controls/ContextMenu/CustomPopupPlacementCallback">Popup Placement Sample</related>
       </Docs>
     </Member>
     <Member MemberName="PlacementRectangleProperty">

xml/System.Windows.Controls/ContextMenu.xml

@@ -208,7 +208,7 @@
 
  The <xref:System.Windows.Controls.Primitives.CustomPopupPlacementCallback> delegate returns an array of possible points that are defined with respect to the <xref:System.Windows.Controls.ContextMenu.PlacementTarget%2A>. When the context menu is displayed, a point is chosen that maximizes the amount of the <xref:System.Windows.Controls.ToolTip> window that is visible.
 
- The behavior is the same as it is for the popup. For more information, see [How to: Specify a Custom Popup Position](/dotnet/framework/wpf/controls/how-to-specify-a-custom-popup-position) and [Popup Placement Sample](https://github.com/dotnet/dotnet-api-docs/tree/main/snippets/csharp/VS_Snippets_Wpf/PopupPositionSnippet/CS).
+ The behavior is the same as it is for the popup. For more information, see [How to: Specify a Custom Popup Position](/dotnet/framework/wpf/controls/how-to-specify-a-custom-popup-position) and [Popup Placement Sample](https://github.com/dotnet/dotnet-api-docs/tree/main/snippets/csharp/System.Windows.Controls/ContextMenu/CustomPopupPlacementCallback).
 
 <a name="dependencyPropertyInfo_CustomPopupPlacementCallback"></a>
 ## Dependency Property Information

xml/System.Windows.Controls/ToolTip.xml

@@ -228,7 +228,7 @@
 |Metadata properties set to `true`|None|
   
 ## Examples  
- The following example shows how to set the <xref:System.Windows.Controls.ToolTip.CustomPopupPlacementCallback%2A> property and create the corresponding delegate. The same technique is used to by the <xref:System.Windows.Controls.Primitives.Popup>, which is demonstrated in the [Popup Placement Sample](https://github.com/dotnet/dotnet-api-docs/tree/main/snippets/csharp/VS_Snippets_Wpf/PopupPositionSnippet/CS).
+ The following example shows how to set the <xref:System.Windows.Controls.ToolTip.CustomPopupPlacementCallback%2A> property and create the corresponding delegate. The same technique is used to by the <xref:System.Windows.Controls.Primitives.Popup>, which is demonstrated in the [Popup Placement Sample](https://github.com/dotnet/dotnet-api-docs/tree/main/snippets/csharp/System.Windows.Controls/ContextMenu/CustomPopupPlacementCallback).
   
  :::code language="csharp" source="~/snippets/csharp/System.Windows.Controls/ToolTip/CustomPopupPlacementCallback/Pane1.xaml.cs" id="Snippetcustompopupplacementcallback":::
  :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_Wpf/ToolTipCustom/visualbasic/pane1.xaml.vb" id="Snippetcustompopupplacementcallback":::  

xml/System.Windows.Controls/UserControl.xml

@@ -48,7 +48,6 @@
   
  ]]></format>
     </remarks>
-    <related type="ExternalDocumentation" href="https://go.microsoft.com/fwlink/?LinkID=160025">NumericUpDown Custom Control with Theme and UI Automation Support Sample</related>
   </Docs>
   <Members>
     <Member MemberName=".ctor">

xml/System.Windows.Data/RelativeSource.xml

@@ -44,9 +44,7 @@
   
  The following example shows the <xref:System.Windows.Style> definition of a custom control called `NumericUpDown`. The <xref:System.Windows.Controls.TextBlock.Text%2A> property of the <xref:System.Windows.Controls.TextBlock> is bound to the `Value` of the object that is the `TemplatedParent`, which is the `NumericUpDown` control that this <xref:System.Windows.Style> is applied to in this case.  
   
- :::code language="xaml" source="~/snippets/csharp/System.Windows/FrameworkElement/DefaultStyleKey/themes/generic.xaml" id="Snippetrelativesource":::  
-  
- For the complete sample, see [NumericUpDown Custom Control with Theme and UI Automation Support Sample](https://go.microsoft.com/fwlink/?LinkID=160025).  
+ :::code language="xaml" source="~/snippets/csharp/System.Windows/FrameworkElement/DefaultStyleKey/themes/generic.xaml" id="Snippetrelativesource":::
   
  The following returns the second <xref:System.Windows.Controls.ItemsControl> encountered on the upward path starting at the target element of the binding.  
   
@@ -142,10 +140,9 @@
         <remarks>
           <format type="text/markdown"><![CDATA[  
   
-## Remarks  
- `ancestorType` and `ancestorLevel` have no relevance if given as parameters for a `mode` other than <xref:System.Windows.Data.RelativeSourceMode.FindAncestor>. Do not use this signature for the other <xref:System.Windows.Data.RelativeSourceMode> values.  
-  
-   
+## Remarks
+
+`ancestorType` and `ancestorLevel` have no relevance if given as parameters for a `mode` other than <xref:System.Windows.Data.RelativeSourceMode.FindAncestor>. Do not use this signature for the other <xref:System.Windows.Data.RelativeSourceMode> values.
   
 ## Examples  
  The following returns the second <xref:System.Windows.Controls.ItemsControl> encountered on the upward path starting at the target element of the binding.  
@@ -188,14 +185,14 @@
         <remarks>
           <format type="text/markdown"><![CDATA[  
   
-## Remarks  
- If the <xref:System.Windows.Data.RelativeSource.Mode%2A> property is not set explicitly, setting the <xref:System.Windows.Data.RelativeSource.AncestorType%2A> or the <xref:System.Windows.Data.RelativeSource.AncestorLevel%2A> property will implicitly lock the <xref:System.Windows.Data.RelativeSource.Mode%2A> property value to <xref:System.Windows.Data.RelativeSourceMode.FindAncestor>.  
+## Remarks
+
+If the <xref:System.Windows.Data.RelativeSource.Mode%2A> property is not set explicitly, setting the <xref:System.Windows.Data.RelativeSource.AncestorType%2A> or the <xref:System.Windows.Data.RelativeSource.AncestorLevel%2A> property will implicitly lock the <xref:System.Windows.Data.RelativeSource.Mode%2A> property value to <xref:System.Windows.Data.RelativeSourceMode.FindAncestor>.  
   
 <a name="xamlTextUsage_AncestorLevel"></a>   
-## XAML Text Usage  
- For XAML information, see [RelativeSource MarkupExtension](/dotnet/framework/wpf/advanced/relativesource-markupextension).  
-  
-   
+## XAML Text Usage
+
+For XAML information, see [RelativeSource MarkupExtension](/dotnet/framework/wpf/advanced/relativesource-markupextension).
   
 ## Examples  
  The following returns the second <xref:System.Windows.Controls.ItemsControl> encountered on the upward path starting at the target element of the binding.  
@@ -240,14 +237,14 @@
         <remarks>
           <format type="text/markdown"><![CDATA[  
   
-## Remarks  
- If the <xref:System.Windows.Data.RelativeSource.Mode%2A> property is not set explicitly, setting the <xref:System.Windows.Data.RelativeSource.AncestorType%2A> or the <xref:System.Windows.Data.RelativeSource.AncestorLevel%2A> property will implicitly lock the <xref:System.Windows.Data.RelativeSource.Mode%2A> property value to <xref:System.Windows.Data.RelativeSourceMode.FindAncestor>.  
+## Remarks
+
+If the <xref:System.Windows.Data.RelativeSource.Mode%2A> property is not set explicitly, setting the <xref:System.Windows.Data.RelativeSource.AncestorType%2A> or the <xref:System.Windows.Data.RelativeSource.AncestorLevel%2A> property will implicitly lock the <xref:System.Windows.Data.RelativeSource.Mode%2A> property value to <xref:System.Windows.Data.RelativeSourceMode.FindAncestor>.  
   
 <a name="xamlTextUsage_AncestorType"></a>   
-## XAML Text Usage  
- For XAML information, see [RelativeSource MarkupExtension](/dotnet/framework/wpf/advanced/relativesource-markupextension).  
-  
-   
+## XAML Text Usage
+
+For XAML information, see [RelativeSource MarkupExtension](/dotnet/framework/wpf/advanced/relativesource-markupextension).
   
 ## Examples  
  The following returns the second <xref:System.Windows.Controls.ItemsControl> encountered on the upward path starting at the target element of the binding.  
@@ -417,9 +414,7 @@
   
 <a name="xamlTextUsage_Self"></a>   
 ## XAML Text Usage  
- For XAML information, see [RelativeSource MarkupExtension](/dotnet/framework/wpf/advanced/relativesource-markupextension).  
-  
-   
+ For XAML information, see [RelativeSource MarkupExtension](/dotnet/framework/wpf/advanced/relativesource-markupextension).
   
 ## Examples  
  The following example shows a style trigger that creates a <xref:System.Windows.Controls.ToolTip> that reports a validation error message. The value of the setter binds to the error content of the current <xref:System.Windows.Controls.TextBox> (the <xref:System.Windows.Controls.TextBox> using the style) using the <xref:System.Windows.Data.Binding.RelativeSource%2A> property. See [How to: Implement Binding Validation](/dotnet/framework/wpf/data/how-to-implement-binding-validation) for more information on this example.  
@@ -600,16 +595,12 @@
   
 <a name="xamlTextUsage_TemplatedParent"></a>   
 ## XAML Text Usage  
- For XAML information, see [RelativeSource MarkupExtension](/dotnet/framework/wpf/advanced/relativesource-markupextension).  
-  
-   
+ For XAML information, see [RelativeSource MarkupExtension](/dotnet/framework/wpf/advanced/relativesource-markupextension).
   
 ## Examples  
  The following example shows the <xref:System.Windows.Style> definition of a custom control called `NumericUpDown`. The <xref:System.Windows.Controls.TextBlock.Text%2A> property of the <xref:System.Windows.Controls.TextBlock> is bound to the `Value` of the object that is the `TemplatedParent`, which is the `NumericUpDown` control that this <xref:System.Windows.Style> is applied to in this case.  
   
- :::code language="xaml" source="~/snippets/csharp/System.Windows/FrameworkElement/DefaultStyleKey/themes/generic.xaml" id="Snippetrelativesource":::  
-  
- For the complete sample, see [NumericUpDown Custom Control with Theme and UI Automation Support Sample](https://go.microsoft.com/fwlink/?LinkID=160025).  
+ :::code language="xaml" source="~/snippets/csharp/System.Windows/FrameworkElement/DefaultStyleKey/themes/generic.xaml" id="Snippetrelativesource":::
   
  ]]></format>
         </remarks>

xml/System.Windows/FrameworkElement.xml

@@ -1383,17 +1383,16 @@
    
   
 ## Examples  
- The following example illustrates the dependency property metadata override usage discussed in Remarks. This code defines a custom control class `NumericUpDown` intended to be used from a dedicated control library assembly. The illustrated static constructor references some private initialization function, registers a class handler (another common control subclassing scenario; see [Marking Routed Events as Handled, and Class Handling](/dotnet/framework/wpf/advanced/marking-routed-events-as-handled-and-class-handling)) and finally overrides the <xref:System.Windows.FrameworkElement.DefaultStyleKey%2A> dependency property metadata on the `NumericUpDown` class. <xref:System.Windows.FrameworkElement.DefaultStyleKey%2A> always returns its own type as the intended key, which is the convention that the theme style system uses to look up the style for some arbitrary otherwise non-styled control. The complete sample also defines the actual control's theme style that is referenced by that key; see [NumericUpDown Custom Control with Theme and UI Automation Support Sample](https://go.microsoft.com/fwlink/?LinkID=160025).  
+ The following example illustrates the dependency property metadata override usage discussed in Remarks. This code defines a custom control class `NumericUpDown` intended to be used from a dedicated control library assembly. The illustrated static constructor references some private initialization function, registers a class handler (another common control subclassing scenario; see [Marking Routed Events as Handled, and Class Handling](/dotnet/framework/wpf/advanced/marking-routed-events-as-handled-and-class-handling)) and finally overrides the <xref:System.Windows.FrameworkElement.DefaultStyleKey%2A> dependency property metadata on the `NumericUpDown` class. <xref:System.Windows.FrameworkElement.DefaultStyleKey%2A> always returns its own type as the intended key, which is the convention that the theme style system uses to look up the style for some arbitrary otherwise non-styled control.
   
  :::code language="csharp" source="~/snippets/csharp/System.Windows/FrameworkElement/DefaultStyleKey/NumericUpDown2.cs":::
  :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_Wpf/CustomControlNumericUpDown/visualbasic/customcontrollibrary/numericupdown2.vb":::  
 
-  The complete source code for this example is available on GitHub for both [C#](https://github.com/dotnet/dotnet-api-docs/tree/main/snippets/csharp/VS_Snippets_Wpf/CustomControlNumericUpDown/CSharp/CustomControlLibrary) and [Visual Basic](https://github.com/dotnet/dotnet-api-docs/tree/main/snippets/visualbasic/VS_Snippets_Wpf/CustomControlNumericUpDown/visualbasic/customcontrollibrary).
+  The complete source code for this example is available for [Visual Basic](https://github.com/dotnet/dotnet-api-docs/tree/main/snippets/visualbasic/VS_Snippets_Wpf/CustomControlNumericUpDown/visualbasic/customcontrollibrary).
 
  ]]></format>
         </remarks>
         <altmember cref="P:System.Windows.FrameworkElement.OverridesDefaultStyle" />
-        <related type="ExternalDocumentation" href="https://go.microsoft.com/fwlink/?LinkID=160025">NumericUpDown Custom Control with Theme and UI Automation Support Sample</related>
       </Docs>
     </Member>
     <Member MemberName="DefaultStyleKeyProperty">