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Page.WindowWidth Property

Gets or sets the width of the host Window or NavigationWindow of a Page.

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

member WindowWidth : float with get, set

<object WindowWidth="double" .../>

Property Value

Type: System.Double
The width of a window that directly hosts a Page.

WindowWidth is only applied when a Page is hosted directly by a window, which includes:

If a Page is hosted by a Frame, setting WindowWidth has no effect, but you can still get the value of WindowWidth.

A Page in an XAML browser application (XBAP) can only use WindowWidth to change the width of Windows Internet Explorer; the width cannot be changed by setting Width, MinWidth, or MaxWidth.

The minimum width of the Windows Internet Explorer window is 250 pixels. For browser-hosted pages, this means that the value of WindowWidth may not be applied if it would cause the total width of the Windows Internet Explorer window to be less than 250 pixels.

See How to: Set the Width of a Window from a Page.

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.