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.NET Development
.NET Framework 3.5
Form Class
Form Properties
 ShowWithoutActivation Property

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This page is specific to
Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:
.NET Framework Class Library
Form..::.ShowWithoutActivation Property

Gets a value indicating whether the window will be activated when it is shown.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)
Visual Basic (Declaration)
<BrowsableAttribute(False)> _
Protected Overridable ReadOnly Property ShowWithoutActivation As Boolean
Visual Basic (Usage)
Dim value As Boolean

value = Me.ShowWithoutActivation
C#
[BrowsableAttribute(false)]
protected virtual bool ShowWithoutActivation { get; }
Visual C++
[BrowsableAttribute(false)]
protected:
virtual property bool ShowWithoutActivation {
    bool get ();
}
JScript
protected function get ShowWithoutActivation () : boolean

Property Value

Type: System..::.Boolean
True if the window will not be activated when it is shown; otherwise, false. The default is false.

Use this property if you want to show a top-level window, but don't want to interrupt a user's work by taking the input focus away from the current window. This can be an informational pop-up window or a floating window, such as a Tools palette in the Paint application.

Because this property is read-only, you can only change its value by overriding ShowWithoutActivation in your own form, and programming it to return true.

If your non-activated window needs to use UI controls, you should consider using the ToolStrip controls, such as ToolStripDropDown. These controls are windowless, and will not cause a window to activate when they are selected.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0
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