When the IsDragging property changes its value, the OnDraggingChanged method is called.
Starting with the .NET Framework version 3.0 Service Pack 1, IsDragging has a protected setter. To use this functionality, your application should target the .NET Framework version 3.5. For more information, see .NET Framework Versions and Dependencies.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)