在C#中运用SQLDMO备份和恢复Microsoft SQL Server数据库

其他WEB语言 2011-02-14 11:10:00 转载来源: AS网站目录整理

SQLDMO(SQL Distributed Management Objects，SQL分布式管理对象)封装了Microsoft SQL Server数据库中的对象。SQLDMO是Microsoft

SQLDMO(SQL Distributed Management Objects，SQL分布式管理对象)封装了Microsoft SQL Server数据库中的对象。SQLDMO是Microsoft SQL Server中企业管理器所使用的应用程序接口，所以它可以执行很多功能，其中当然也包括对数据库的备份和恢复。
SQLDMO由Microsoft SQL Server自带的SQLDMO.dll提供，由于SQLDMO.dll是一个COM对象，所以大家在用之前必须在.NET项目中添加对它的引用，如下图所示：

下面是用C#语言书写的用于Microsoft SQL Server数据库备份和恢复的类：

using System;

namespace DbService
{
/// <summary>
/// DbOper类,主要应用SQLDMO实现对Microsoft SQL Server数据库的备份和恢复
/// </summary>
public sealed class DbOper
{
/// <summary>
/// DbOper类的构造函数
/// </summary>
private DbOper()
{
}

/// <summary>
/// 数据库备份
/// </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 = "数据库备份";
    oBackup.Initialize = true;
    oBackup.SQLBackup(oSQLServer);
   }
   catch
   {
    throw;
   }
   finally
   {
    oSQLServer.DisConnect();
   }
}

/// <summary>
/// 数据库恢复
/// </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();
   }
}
}
}