Control.TopLevelControl Property (System.Windows.Forms)

.NET Framework Class Library

Control..::.TopLevelControl Property

Gets the parent control that is not parented by another Windows Forms control. Typically, this is the outermost Form that the control is contained in.

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

Syntax

<BrowsableAttribute(False)> _
Public ReadOnly Property TopLevelControl As Control

[BrowsableAttribute(false)]
public Control TopLevelControl { get; }

[BrowsableAttribute(false)]
public:
property Control^ TopLevelControl {
	Control^ get ();
}

[<BrowsableAttribute(false)>]
member TopLevelControl : Control

Property Value

Type: System.Windows.Forms..::.Control
The Control that represents the top-level control that contains the current control.

Remarks

The top-level control is defined as the parent control that is not parented by another Windows Forms control. Typically, this is the outermost Form that the control is contained in. For example, if the control is contained on an MDI child Form, then the top-level control is the Multiple Document Interface (MDI) parent Form. If the control is not parented on a Form, this property will return nullNothingnullptra null reference (Nothing in Visual Basic).

Version Information

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET Framework Security

UIPermission
for all windows to get this property value. Associated enumeration: UIPermissionWindow..::.AllWindows

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, 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.

Reference

Control Class

System.Windows.Forms Namespace

Form

Advertise Here