Assembly: System.Windows (in System.Windows.dll)
XMLNS for XAML: Not mapped to an xmlns.
Dependency property identifier field: ShowGridLinesProperty
Enabling grid lines creates dotted lines around all the elements within a Grid, as shown in the following illustration.
Only dotted lines are available because this property is intended as a design tool to debug layout problems. Setting to true is not intended for use in production-quality code. If you want lines inside a Grid, style the elements within the Grid to have borders. For more information, see Border.