Desktop coordinates are based on the working area of the screen, which excludes the taskbar. The coordinate system of the desktop is pixel-based. If your application is running on a multiple monitor system, the coordinates of the form are the coordinates for the combined desktop.

You can use this property to size and position a form relative to other forms or applications on the Windows desktop.

The following code example sets the size and position of a form so that the form is positioned 50 pixels from the left border of the desktop and 50 pixels from the top of the desktop. This example requires that the method is defined within a form class.

Public Sub MoveMyForm()
    ' Create a Rectangle object that will be used as the bound of the form.
    Dim tempRect As New Rectangle(50, 50, 100, 100)
    '  Set the bounds of the form using the Rectangle object.
    DesktopBounds = tempRect
End Sub 'MoveMyForm

public void MoveMyForm()
 {
    // Create a Rectangle object that will be used as the bound of the form.
    Rectangle tempRect = new Rectangle(50,50,100,100);
    //  Set the bounds of the form using the Rectangle object.
    this.DesktopBounds = tempRect;
 }

public:
   void MoveMyForm()
   {
      // Create a Rectangle object that will be used as the bound of the form.
      Rectangle tempRect = Rectangle( 50, 50, 100, 100 );
      // Set the bounds of the form using the Rectangle object.
      this->DesktopBounds = tempRect;
   }

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

.NET Framework

Reference