This documentation is archived and is not being maintained.

ActivityDesigner.OnPreviewMouseDown Method

Begins the processing that occurs when an unhandled PreviewMouseDown attached routed event reaches an element in its route that is derived from this class.

Namespace:  System.Activities.Presentation
Assembly:  System.Activities.Presentation (in System.Activities.Presentation.dll)

protected override void OnPreviewMouseDown(
	MouseButtonEventArgs e


Type: System.Windows.Input.MouseButtonEventArgs
A DragEventArgs that contains the event data.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

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

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