C#+SQL数据库备份和还原

使用前要导入SQLDMO.dll（在com组件中导入Microsoft SQLDMO Object Library即可）

　　/// 
    /// DbOper类,主要应用SQLDMO实现对Microsoft SQL Server数据库的备份和恢复
    /// 
    public sealed class DbOper
    {
        /// 
        /// DbOper类的构造函数
        /// 
        public DbOper()
        {
        }
        /// 
        /// 数据库备份
        /// 
        public static void DbBackup()
        {
            SQLDMO.Backup oBackup = new SQLDMO.BackupClass();
            SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
            try
            {
                oSQLServer.LoginSecure = false;
                oSQLServer.Connect(".","sa","sasa");//服务器名、账号、密码
                oBackup.Action = SQLDMO.SQLDMO_BACKUP_TYPE.SQLDMOBackup_Database;
                oBackup.Database = "tian";
                oBackup.Files = @"d:	ian.bak";
                oBackup.BackupSetName = "tian";
                oBackup.BackupSetDescription = "数据库备份";
                oBackup.Initialize = true;
                oBackup.SQLBackup(oSQLServer);
            }
            catch
            {
                throw;
            }
            finally
            {
                oSQLServer.DisConnect();
            }
        }
        /// 
        /// 数据库恢复
        /// 
        public static void DbRestore()
        {
            SQLDMO.Restore oRestore = new SQLDMO.RestoreClass();
            SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
            try
            {
                oSQLServer.LoginSecure = false;
                oSQLServer.Connect(".", "sa", "sasa");
                oRestore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database;
                oRestore.Database = "tian";
                oRestore.Files = @"d:tian.bak";
                oRestore.FileNumber = 1;
                oRestore.ReplaceDatabase = true;
                oRestore.SQLRestore(oSQLServer);
            }
            catch
            {
                throw;
            }
            finally
            {
                oSQLServer.DisConnect();
            }
        }
    }

来自：http://www.cnblogs.com/tianguook/archive/2010/07/01/1769515.html