ToolTipService.PlacementTarget Attached Property
Gets or sets the object relative to which the tooltip is positioned.
Assembly: PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
Metadata properties set to true
The does not have to be the object on which the tooltip is defined. For example, a TextBlock that describes an Image could specify its tooltip to appear over the Image when the user pauses the mouse pointer on the TextBlock.
If you do not specify a and the tooltip has a visual parent, the visual parent acts as the . If the tooltip does not have a visual parent and the value of the property is null, the tooltip control is positioned relative to the upper-left corner of the screen.