Determines whether the edit control has a single line border around the client area.
property BorderStyle: TBorderStyle;
Use BorderStyle to affect the sharpness with which the client area of the edit control stands out. BorderStyle can have a value of either bsSingle or bsNone. If BorderStyle is bsSingle, the edit control has a single-line border around the client area. If BorderStyle is bsNone, there will be no border.