.Net下的資料備份和還原

來源:互聯網
上載者:User

  資料庫:SQL Server  ;引用SQLDMO

  ◆資料備份 :
 /// <summary>
  /// 備份資料庫
  /// </summary>
  private void btnBackUp_Click(object sender, System.EventArgs e)
  {
   this.Cursor = Cursors.WaitCursor;
   this.label1.Text = "  進行中檔案庫的資料備份,這可能需要幾秒到幾十的時間,請稍候...";
   this.label1.Visible = true;
   this.label1.Refresh();
   this.pBar1.Visible = true;
   //------------------------------------------------------------------------------------

  
   string selfName = “D:\NorthwindBak“;
   string deviceName = “NorthwindBak“;
   string remark = "備份測試";
  
   //◆資料備份:
   SQLDMO.Backup oBackup = new SQLDMO.BackupClass();
   SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
   oBackup.Action = 0 ;
   oBackup.Initialize = true ;
   SQLDMO.BackupSink_PercentCompleteEventHandler pceh = new SQLDMO.BackupSink_PercentCompleteEventHandler(Step);
   oBackup.PercentComplete += pceh;

   try
   {
    oSQLServer.LoginSecure = false;
    oSQLServer.Connect(Common.MySettings.SqlServerName, "sa", "");
    oBackup.Action = SQLDMO.SQLDMO_BACKUP_TYPE.SQLDMOBackup_Database;
    oBackup.Database = "Northwind";//資料庫名
    oBackup.Files = selfName;//檔案路徑
    oBackup.BackupSetName = deviceName;//備份名稱
    oBackup.BackupSetDescription = remark;//備份描述
    oBackup.Initialize = true;
    oBackup.SQLBackup(oSQLServer);
   
   }
   catch(System.Exception ex)
   {
    Common.ShowMsg("資料備份失敗:\n" + ex.ToString());
   }
   finally
   {
    oSQLServer.DisConnect();
   }

   //------------------------------------------------------------------------------------
   this.label1.Visible = false;
   this.pBar1.Visible = false;
   this.Cursor = Cursors.Default;
  }


  /// <summary>
  /// 顯示備份進度條
  /// </summary>
  private void Step(string message,int percent)
  {
   this.pBar1.Value = percent ;
  }

  ◆資料還原 :

  /// <summary>
  /// 還原資料庫
  /// </summary>
  private void btnRestore_Click(object sender, System.EventArgs e)
  {
  
   this.Cursor = Cursors.WaitCursor;
   this.label1.Text = "  進行中檔案庫的資料還原,這可能需要幾秒到幾十的時間,請稍候...";
   this.label1.Visible = true;
   this.label1.Refresh();
   this.pBar1.Visible = true;
   //------------------------------------------------------------------------------------

   string fileName = "NorthwindBak";
   string filePath = "D:\NorthwindBak";
   string remark = "備份測試";

   SQLDMO.Restore oRestore = new SQLDMO.RestoreClass();
   SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
   oRestore.Action = 0 ;
   SQLDMO.RestoreSink_PercentCompleteEventHandler pceh = new SQLDMO.RestoreSink_PercentCompleteEventHandler(Step);
   oRestore.PercentComplete += pceh;
   try
   {
                oSQLServer.Connect(Common.MySettings.SqlServerName, "sa", "");
                SQLDMO.QueryResults qr = oSQLServer.EnumProcesses(-1) ;
                int iColPIDNum = -1 ;
                int iColDbName = -1 ;

  //殺死其它的串連進程
                for(int i=1;i<=qr.Columns;i++)
                {
                    string strName = qr.get_ColumnName(i) ;
                    if (strName.ToUpper().Trim() == "SPID")
                    {
                        iColPIDNum = i ;
                    }
                    else if (strName.ToUpper().Trim() == "DBNAME")
                    {
                        iColDbName = i ;
                    }
                    if (iColPIDNum != -1 && iColDbName != -1)
                        break ;
                }

                for(int i=1;i<=qr.Rows;i++)
                {
                    int lPID = qr.GetColumnLong(i,iColPIDNum) ;
                    string strDBName = qr.GetColumnString(i,iColDbName) ;
                    if (strDBName.ToUpper() == "Northwind".ToUpper())
                        oSQLServer.KillProcess(lPID) ;
                }


    oRestore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database;
    oRestore.Database = "Northwind";
    oRestore.Files = filePath;
    oRestore.FileNumber = 1;
    oRestore.ReplaceDatabase = true;
    oRestore.SQLRestore(oSQLServer);

               
  }
            catch(System.Exception ex)
            {
                Common.ShowMsg("資料還原失敗:\n" + ex.ToString());
   }
   finally
   {
    oSQLServer.DisConnect();
   }
 
   //------------------------------------------------------------------------------------
   this.label1.Visible = false;
   this.pBar1.Visible = false;
   this.Cursor = Cursors.Default;
  }

  /// <summary>
  /// 顯示還原進度條
  /// </summary>
  private void Step(string message,int percent)
  {
   this.pBar1.Value = percent ;
  }



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