实例——数据库备份与恢复.txt

Delphi 7组件应用实例 书籍语言： 简体中文 书籍类型： 程序设计 授权方式： 免费软件 书籍大小： 105 KB

unit UStore;
interface
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, IBServices;
type
  TFRestore = class(TForm)
    IBBackupService1: TIBBackupService;
    IBRestoreService1: TIBRestoreService;
    Button1: TButton;
    Memo1: TMemo;
    Button2: TButton;
    Memo2: TMemo;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  FRestore: TFRestore;

implementation

{$R *.dfm}

procedure TFRestore.Button1Click(Sender: TObject);
begin
//数据库备份
 with IBBackupService1 do
  begin
    ServerName := 'employee';
    LoginPrompt := False;
    Params.Add('user_name=sysdba');
    Params.Add('password=masterkey');
    Active := True;
    try
      Verbose := True;
      Options := [NonTransportable, IgnoreLimbo];
      //指定数据库源文件 ，设置为特定的数据库文件
      DatabaseName := 'G:\malin\employee.gdb';
      //指定备份文件
      BackupFile.Add('C:\temp\employee1.gbk');
       //启动服务
      ServiceStart;
      While not Eof do
      //在Memo组件中显示备份信息
        Memo1.Lines.Add(GetNextLine);
    finally
      Active := False;
    end;
  end;
end;

procedure TFRestore.Button2Click(Sender: TObject);
begin
//从备份文件中恢复数据库
with IBRestoreService1 do
  begin
    ServerName := 'Poulet';
    LoginPrompt := False;
    Params.Add('user_name=sysdba');
    Params.Add('password=masterkey');
    Active := True;
    try
      Verbose := True;
      Options := [Replace, UseAllSpace];
      PageBuffers := 3000;
      PageSize := 4096;
      //要恢复的数据库
      DatabaseName.Add('G:\malin\employee1.gdb');
      //指定备份文件
      BackupFile.Add('C:\temp\employee1.gbk');
      ServiceStart;
      While not Eof do
      //在Memo组件中显示恢复信息
        Memo2.Lines.Add(GetNextLine);
    finally
      Active := False;
    end;
  end;
end;

end.