在C#中運用SQLDMO備份和恢復Microsoft SQL Server數據庫

2019-11-18 16:37:12

字體：大中小

來源：轉載

供稿：網友

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，所以大家在用之前必須在.NET項目中添加對它的引用，如下圖所示：

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：

using System;

namespace DbService
{
/// <summary>
/// DbOper類,主要應用SQLDMO實現對Microsoft SQL Server數據庫的備份和恢復
/// </summary>
public sealed class DbOper
{
/// <summary>
/// DbOper類的構造函數
/// </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();
   try
   {
    oSQLServer.LoginSecure = false;
    oSQLServer.Connect("localhost", "sa", "1234");
    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();
   try
   {
    oSQLServer.LoginSecure = false;
    oSQLServer.Connect("localhost", "sa", "1234");
    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();
   }
}
}
}