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.