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.