backup.~pas
资源名称:万家福超市管理系统.rar [点击查看]
上传用户:bjkrmsxy
上传日期:2010-01-31
资源大小:9004k
文件大小:2k
源码类别:
百货/超市行业
开发平台:
Delphi
- unit backup;
- interface
- uses
- Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
- Dialogs, Gauges, StdCtrls;
- type
- Tbackup_From = class(TForm)
- Gauge1: TGauge;
- GroupBox1: TGroupBox;
- Button1: TButton;
- Button2: TButton;
- Button3: TButton;
- SaveDialog1: TSaveDialog;
- OpenDialog1: TOpenDialog;
- Label1: TLabel;
- procedure Button1Click(Sender: TObject);
- procedure Button2Click(Sender: TObject);
- procedure Button3Click(Sender: TObject);
- private
- { Private declarations }
- public
- { Public declarations }
- end;
- var
- backup_From: Tbackup_From;
- DataFile: String;
- implementation
- {$R *.dfm}
- procedure Tbackup_From.Button1Click(Sender: TObject);
- var
- i: integer;
- begin
- DataFile := GetCurrentDir+'datesuper.mdb';
- try
- if not savedialog1.Execute then exit;
- if FileExists(savedialog1.FileName+'.mdb') then
- begin
- if Messagebox(handle,'存在数据库重名,是否覆盖?','存盘选项',mb_iconquestion+mb_yesno)=IDNo then Exit;
- end
- else
- begin
- for i:=Gauge1.MinValue to Gauge1.MaxValue do
- Gauge1.Progress := i;
- CopyFile(PChar(DataFile),PChar(SaveDialog1.FileName+'.mdb'),True);
- Messagebox(handle,'数据库备份成功!','备份数据',mb_iconinformation+mb_ok);
- end;
- except
- Messagebox(handle,'警告:数据库备份失败!','存盘错误',mb_iconwarning+mb_ok);
- end;
- end;
- procedure Tbackup_From.Button2Click(Sender: TObject);
- var
- i: integer;
- begin
- DataFile := extractfilepath(application.exename)+'datesuper.mdb';
- try
- if not opendialog1.Execute then exit;
- if Messagebox(handle,'警告:现有数据有可能丢失,确定还原?','确定还原',mb_iconquestion+mb_yesno)=IDNo then Exit;
- for i:=Gauge1.MinValue to Gauge1.MaxValue do
- Gauge1.Progress := i;
- CopyFile(PChar(OpenDialog1.FileName),PChar(DataFile),true);
- Messagebox(handle,'数据库还原成功!','还原数据',mb_iconinformation+mb_ok);
- except
- Messagebox(handle,'警告:数据库还原失败!','读取错误',mb_iconwarning+mb_ok);
- end;
- end;
- procedure Tbackup_From.Button3Click(Sender: TObject);
- begin
- close;
- end;
- end.