Control.Handle Property (System.Windows.Forms)

.NET Framework Class Library

Control..::.Handle Property

Gets the window handle that the control is bound to.

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

<BrowsableAttribute(False)> _
Public ReadOnly Property Handle As IntPtr

[BrowsableAttribute(false)]
public IntPtr Handle { get; }

[BrowsableAttribute(false)]
public:
virtual property IntPtr Handle {
	IntPtr get () sealed;
}

[<BrowsableAttribute(false)>]
abstract Handle : IntPtr
[<BrowsableAttribute(false)>]
override Handle : IntPtr

Property Value

Type: System..::.IntPtr
An IntPtr that contains the window handle (HWND) of the control.

Implements

IWin32Window..::.Handle

Remarks

The value of the Handle property is a Windows HWND. If the handle has not yet been created, referencing this property will force the handle to be created.

Examples

The following code example demonstrates using the ControlPaint..::.DrawFocusRectangle and the Handle property. To run the example paste the following code in a form. Add two buttons named Button1 and Button2 to the form and ensure all events are connected to their event handlers.


' This method draws a focus rectangle on Button2 using the 
' handle and client rectangle of Button2.
Private Sub Button1_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button1.Click
    ControlPaint.DrawFocusRectangle(Graphics.FromHwnd(Button2.Handle), _
    Button2.ClientRectangle)
End Sub


	// This method draws a focus rectangle on Button2 using the 
	// handle and client rectangle of Button2.
	private void Button1_Click(System.Object sender, System.EventArgs e)
	{
		ControlPaint.DrawFocusRectangle(Graphics.FromHwnd(Button2.Handle), 
			Button2.ClientRectangle);
	}


// This method draws a focus rectangle on Button2 using the 
// handle and client rectangle of Button2.
void Button1_Click( System::Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
   ControlPaint::DrawFocusRectangle( Graphics::FromHwnd( Button2->Handle ), Button2->ClientRectangle );
}

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

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