string sub;

              sub=str.Substring(str.IndexOf(bg)+bg.Length);

              sub=sub.Substring(0,sub.IndexOf(";"));

              return sub;

         }

         /// <summary>

         /// 数据库备份

         /// </summary>

         public  bool DbBackup(string url)

         {

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

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

              try

              {

                   oSQLServer.LoginSecure = false;

                   oSQLServer.Connect(server,uid, pwd);

                   oBackup.Action = SQLDMO.SQLDMO_BACKUP_TYPE.SQLDMOBackup_Database;

                   oBackup.Database = database;

                   oBackup.Files = url;//"d:\Northwind.bak";

                   oBackup.BackupSetName = database;

                   oBackup.BackupSetDescription = "数据库备份";

                   oBackup.Initialize = true;

                   oBackup.SQLBackup(oSQLServer);

                   return true;

              }

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