Rect.Union Method (Rect)

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Expands the rectangle represented by the current Rect exactly enough to contain the specified rectangle.

Namespace:  System.Windows
Assembly:  System.Windows (in System.Windows.dll)


Public Sub Union ( _
    rect As Rect _
public void Union(
    Rect rect



Because this method alters the current Rect it acts upon, it is often a best practice to retain a copy before calling Union in case the union is not a desirable value for the current Rect.

Version Information


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.