Delphi2009之TStringBuilder类[7]:ToString

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.

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