FrameworkElement.ContextMenu Property
.NET Framework 4.6 and 4.5
Gets or sets the context menu element that should appear whenever the context menu is requested through user interface (UI) from within this element.
Namespace: System.Windows
Assembly: PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
ContextMenu itself is a FrameworkElement derived class, and it is technically possible for ContextMenu itself to have a ContextMenu property. However, this creates a confusing context menu experience for the user and this practice is not recommended.
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