System.Windows.Forms 1.0.5000.0 2.0.0.0 System.Enum System.Runtime.InteropServices.ComVisible(true) Use the members of this enumeration in controls that provide the property to set its value. Specifies the appearance of a control. Field System.Windows.Forms.Appearance The appearance of a Windows button. 1.0.5000.0 2.0.0.0 Field System.Windows.Forms.Appearance The default appearance defined by the control class. 1.0.5000.0 2.0.0.0