Delphi 2009 之 TStringBuilder 类[7]: ToString

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

//TStringBuilder.ToString 可以带参数
procedure TForm1.Button1Click(Sender: TObject);
var
  sb: TStringBuilder;
begin
  sb := TStringBuilder.Create('123456789');

  ShowMessage(sb.ToString);       {123456789}
  ShowMessage(sb.ToString(3, 4)); {4567}

  sb.Free;
end;

end.