'Declaration Public Property BorderStyle As LineDrawStyle
public LineDrawStyle BorderStyle {get; set;}
This property indicates the style of tooltip borders.
The BorderColor and BorderThickness properties specify the color and thickness of tooltip borders, respectively.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, 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