还原数据库文件代码

[jingtuzhong]

求还原数据库文件代码

[浩南_哥]

什么数据库？
sql sever
http://topic.csdn.net/t/20050309/21/3838323.html
access
http://waphi.baidu.com/othershore/blog/item/1adc0d1e97abc711413417ba.html?from=pc

[newfang]

ADOC:=TADOConnection.Create(Self);
ADOC.LoginPrompt:=False;
ADOC.ConnectionString:=Format(sConnectionStr,['master',sServerName]);
try
try
ADOC.Open;
ExeComm:=TADOCommand.Create(Self);
ExeComm.Connection:=ADOC;
ExeComm.CommandText:='use master';
try
ExeComm.Execute;
ExeComm.CommandText:='ALTER DATABASE ' + sDBName +
' SET OFFLINE WITH ROLLBACK IMMEDIATE';
ExeComm.Execute;
ExeComm.CommandText:='Restore DataBase ' + sDBName +
' from Disk = ''' + sFileName + ''' With Replace';
ExeComm.Execute;
ExeComm.CommandText:='ALTER DATABASE ' + sDBName +
' SET ONLINE WITH ROLLBACK IMMEDIATE';
ExeComm.Execute;
MessageBox(Handle,'数据库恢复成功！','提示：',
Mb_OK + Mb_IconInformation);
except
on e: Exception do begin
MessageBox(Handle,PChar('恢复数据库失败：' + #13 +
e.Message),'提示：',Mb_OK + Mb_IconError);
ExeComm.Free;
end;
end;
except
on e: Exception do
MessageBox(Handle,PChar('数据库连接失败: ' + #13 + e.Message),
'提示：',Mb_OK + Mb_IconError);
end;
finally
ADOC.Free;
end;

[kye_jufei]

procedure Tsys_datamodule.DataBaseBack;
var
  FileName:string;
  ADOQ:TADOQuery;
begin
  ADOQ:=TADOQuery.Create(nil);
  ADOQ.Connection:=sys_datamodule.con1;
  if MessageDlg('你確定要備份數據庫嗎?',mtInformation,[mbYes,mbNo],0)=idyes then
  begin
    try
      if SaveDialog1.Execute then
      begin
        FileName:=SaveDialog1.FileName;
        if (Copy(FileName,Length(FileName)-3,4)<>'.BAK') or (Copy(FileName,Length(FileName)-3,4)<>'.bak') then
          FileName:=FileName+'.BAK';
        ADOQ.SQL.Text:='Use Master Backup Database MES to Disk='''+ FileName+''' Use MES';
        ADOQ.ExecSQL;
        MessageDlg('數據庫備份成功!',mtInformation,[mbOK],0);
      end;
    except
      MessageDlg('數據庫備份失敗!',mtInformation,[mbOK],0);
      Exit;
    end;
  end;
end;

procedure Tsys_datamodule.RestoreBaseBack;
var
  StrFile:string;
  ADOQ:TADOQuery;
begin
  ADOQ:=TADOQuery.Create(nil);
  ADOQ.Connection:=sys_datamodule.con1;
  if MessageDlg('你確定要還原數據庫嗎?',mtInformation,[mbYes,mbNo],0)=idyes then
  begin
    try
      if OpenDialog1.Execute then
      begin
        StrFile:=OpenDialog1.FileName;
        ADOQ.SQL.Text:='Use Master Restore Database MES From Disk='''+ StrFile+''' Use MES';
        ADOQ.ExecSQL;
        MessageDlg('數據庫還原成功!',mtInformation,[mbOK],0);
      end;
    except
      MessageDlg('數據庫還原失敗!',mtInformation,[mbOK],0);
      Exit;
    end;
  end;
end;