在C#中運用SQLDMO備份和恢復(fù)Microsoft SQL Server數(shù)據(jù)庫

SQLDMO(SQL Distributed Management Objects，SQL分布式管理對象)封裝了Microsoft SQL Server數(shù)據(jù)庫中的對象。SQLDMO是Microsoft SQL Server中企業(yè)管理器所使用的應(yīng)用程序接口，所以它可以執(zhí)行很多功能，其中當(dāng)然也包括對數(shù)據(jù)庫的備份和恢復(fù)。

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(shù)據(jù)庫備份和恢復(fù)的類：

using System;

namespace DbService
{
/// <summary>
/// DbOper類,主要應(yīng)用SQLDMO實現(xiàn)對Microsoft SQL Server數(shù)據(jù)庫的備份和恢復(fù)
/// </summary>
public sealed class DbOper
{
/// <summary>
/// DbOper類的構(gòu)造函數(shù)
/// </summary>
private DbOper()
{
}

/// <summary>
/// 數(shù)據(jù)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(shù)據(jù)庫備份";
oBackup.Initialize = true;
oBackup.SQLBackup(oSQLServer);
}
catch
{
throw;
}
finally
{
oSQLServer.DisConnect();
}
}

/// <summary>
/// 數(shù)據(jù)庫恢復(fù)
/// </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();
}
}
}
}

這段代碼雖然很短，但是卻很實用，希望能夠?qū)Υ蠹矣兴鶐椭?)