Window.DragMove Method (System.Windows)

The left mouse button must be down when DragMove is called. One way to detect when the left mouse button is pressed is to handle the MouseLeftButtonDown event.

When DragMove is called, the left mouse button must be depressed over an exposed area of the window's client area.

Note
This method cannot be called when a window is hosted in a browser.

The following example shows how to override OnMouseLeftButtonDown to call DragMove.

Protected Overrides Sub OnMouseLeftButtonDown(ByVal e As MouseButtonEventArgs)
    MyBase.OnMouseLeftButtonDown(e)

    ' Begin dragging the window
    Me.DragMove()
End Sub

protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
    base.OnMouseLeftButtonDown(e);

    // Begin dragging the window
    this.DragMove();
}

.NET Framework

.NET Framework Client Profile

• UIPermission  

  for permission to drag a window. Associated enumeration: AllWindows

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

Reference