WinForm(C#)中運用SQLDMO備份和恢復SQL Server數據庫（帶進度條）

SQLDMO(SQL Distributed Management Objects，SQL分布式管理對象)封裝了Microsoft SQL Server數據庫中的對象。SQLDMO是Microsoft SQL Server中企業管理器所使用的應用程序接口，所以它可以執行很多功能，其中當然也包括對數據庫的備份和恢復。 

SQLDMO由Microsoft SQL Server自帶的SQLDMO.dll提供，由于SQLDMO.dll是一個COM對象（有關COM的概念，請參看我的COM與COM+技術那篇文章），所以大家在用之前必須在.Net項目中添加對它的引用。 

下面是用C#語言書寫的用于Microsoft SQL Server數據庫備份和恢復的類：

public  sealed  class  DbOper 

{ 

     ///<summary>

     /// DbOper類的構造函數

///作者：Shadow

     ///</summary>

     private DbOper() 

     { 

     } 

 

     ///<summary>

     /// 數據庫備份 

     ///</summary>

     public  static  void DbBackup() 

     { 

          SQLDMO.Backup oBackup = new SQLDMO.BackupClass(); 

          SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass(); 

          //顯示進度條
             SQLDMO.BackupSink_PercentCompleteEventHandler progress = new 
    
              SQLDMO.BackupSink_PercentCompleteEventHandler(Step);
              oBackup.PercentComplete += progress;

         try

         { 

              oSQLServer.LoginSecure = false; 

              oSQLServer.Connect("localhost", "sa", "wang"); 

              oBackup.Action = SQLDMO.SQLDMO_BACKUP_TYPE.SQLDMOBackup_Database; 

              oBackup.Database = "Northwind"; 

              oBackup.Files = @"d:\Northwind.bak"; 

              oBackup.BackupSetName = "Northwind"; 

              oBackup.BackupSetDescription = "數據庫備份"; 

              oBackup.Initialize = true; 

              oBackup.SQLBackup(oSQLServer); 

         } 

         catch

         { 

              throw; 

         } 

          finally

         { 

              oSQLServer.DisConnect(); 

         } 

     } 

 

     ///<summary>

     /// 數據庫恢復 

     ///</summary>

     public  static  void DbRestore() 

     { 

          SQLDMO.Restore oRestore = new SQLDMO.RestoreClass(); 

          SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass(); 

          //顯示進度條
              SQLDMO.RestoreSink_PercentCompleteEventHandler progress =
              new SQLDMO.RestoreSink_PercentCompleteEventHandler(Step); 
               oRestore .PercentComplete += progress;


         try

         { 

              oSQLServer.LoginSecure = false; 

              oSQLServer.Connect("localhost", "sa", "wang"); 

              oRestore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database; 

              oRestore.Database = "Northwind"; 

              oRestore.Files = @"d:\Northwind.bak"; 

              oRestore.FileNumber = 1; 

              oRestore.ReplaceDatabase = true; 

              oRestore.SQLRestore(oSQLServer); 

         } 

         catch

         { 

              throw; 

         } 

          finally

         { 

              oSQLServer.DisConnect(); 

         } 

     } 

}

 

#region 進度條
    private void Step(string message,int percent) 
    { 
    progressBar1.Value = percent ; 
   }
    #endregion