SysUtils.Trim、SysUtils.TrimLeft、SysUtils.TrimRight - 删除空格
举例:
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var
ss,s: string;
begin
ss := ' Delphi ';
s := Trim(ss); {删除两边空格}
ShowMessage('^' + s + '$'); {^Delphi$}

s := TrimLeft(ss); {删除左空格}
ShowMessage('^' + s + '$'); {^Delphi $}

s := TrimRight(ss); {删除右空格}
ShowMessage('^' + s + '$'); {^ Delphi$}
end;