'Declaration Public Property CheckStyle As System.Nullable(Of CheckStyle)
public System.Nullable<CheckStyle> CheckStyle {get; set;}
Note that this property works over the ButtonAppearance.Caption property, for example if CheckStyle is CheckStyle.Cross, then ButtonAppearance.Caption will be "8".
If the value of this property is null, it indicates that ButtonAppearance.Caption contains an unknown value.'Declaration Public Property CheckStyle As System.Nullable(Of CheckStyle)
public System.Nullable<CheckStyle> CheckStyle {get; set;}