This enumeration allows you to set the appearance of the non-client area of a Form . public enum FormBorderStyle { None = 0 , FixedSingle = 1 , Fixed3D = 2 , FixedDialog = 3 , Sizable = 4 , FixedToolWindow = 5 , SizableToolWindow = 6 } HierarchySystem.Object System.ValueType System.Enum(System.IComparabl, System.IFormattable , System.IConvertible) FormBorderStyle Returned ByForm.FormBorderStyle , PrintPreviewDialog.FormBorderStyle Passed ToForm.FormBorderStyle , PrintPreviewDialog.FormBorderStyle |