Delphi 2009之TStringBuilder类[3]: Replace

unit Unit1;

interface
uses
　Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
　Dialogs, StdCtrls;
type
　TForm1 = class(TForm)
　　Button1: TButton;
　　Button2: TButton;
　　Button3: TButton;
　　Button4: TButton;
　　procedure Button1Click(Sender: TObject);
　　procedure Button2Click(Sender: TObject);
　　procedure Button3Click(Sender: TObject);
　　procedure Button4Click(Sender: TObject);
　end;
var
　Form1: TForm1;
implementation
{$R *.dfm}

//TStringBuilder.Replace 替换字符串

procedure TForm1.Button1Click(Sender: TObject);
var
　sb: TStringBuilder;
begin
　sb := TStringBuilder.Create;
　sb.Append('从 Delphi 2007 到 Delphi 2009');
　sb.Replace('Delphi', 'CBuilder');
　ShowMessage(sb.ToString);　　　　 {从 CBuilder 2007 到 CBuilder 2009}
　sb.Free;
end;

//TStringBuilder.Replace 替换字符

procedure TForm1.Button2Click(Sender: TObject);
var
　sb: TStringBuilder;
begin
　sb := TStringBuilder.Create;
　sb.Append('从 Delphi 2007 到 Delphi 2009');
　sb.Replace('0', '9');
　ShowMessage(sb.ToString);　　　　 {从 Delphi 2997 到 Delphi 2999}
　sb.Free;
end;

//TStringBuilder.Replace 在指定范围内替换字符

procedure TForm1.Button3Click(Sender: TObject);
var
　sb: TStringBuilder;
begin
　sb := TStringBuilder.Create;
　sb.Append('ABABABABABAB');
　sb.Replace('A', '-', 4, 5);
　ShowMessage(sb.ToString);　　{ABAB-B-B-BAB}
　sb.Free;
end;

//TStringBuilder.Replace 在指定范围内替换字符串

procedure TForm1.Button4Click(Sender: TObject);
var
　sb: TStringBuilder;
begin
　sb := TStringBuilder.Create;
　sb.Append('ABC123ABC123ABC123');
　sb.Replace('ABC', '-', 3, 12);
　ShowMessage(sb.ToString);　　　{ABC123-123-123}
　sb.Free;
end;

end.