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 程式師世界 >> 編程語言 >> 更多編程語言 >> Delphi >> Delphi 2009 之 TStringBuilder 類[3]: Replace

Delphi 2009 之 TStringBuilder 類[3]: Replace

編輯:Delphi

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 替換字符串

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

  //TStringBuilder.Replace 替換字符

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

  //TStringBuilder.Replace 在指定范圍內替換字符

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 在指定范圍內替換字符串

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.

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