/// <summary>

    /// 数据库的备份与恢复

    /// </summary>

    public class BackupAndRestoreDb

    {

        /// <summary>

        /// 备份数据库

        /// </summary>

        /// <param name="backupPath"></param>

        public void BackDb(string backupPath)

        {

            if (File.Exists(backupPath))

            {

                File.Delete(backupPath);

            }

            string strSql = "backup database AddressList to disk=@backupPath";

            SqlParameter[] parameters = {new SqlParameter("@backupPath", SqlDbType.NVarChar, 200)};

            parameters[0].Value = backupPath;

            SqlDbHelper.ExecuteNonQuery(strSql, CommandType.Text, parameters);

        }

        /// <summary>

        /// 恢复数据库

        /// </summary>

        /// <param name="restorePath"></param>

        public void RestoreDb(string restorePath)

        {

            string strSql = "Alter Database AddressList Set OffLine with Rollback immediate;" +

                            "use master;" +

                            "restore database AddressList from disk=@restorePath With Replace;" +

                            "Alter Database AddressLust Set OnLine With rollback Immediate";

            SqlParameter[] parameters = {new SqlParameter("@restorePath", SqlDbType.NVarChar, 200)};

            parameters[0].Value = restorePath;

            SqlDbHelper.ExecuteNonQuery(strSql, CommandType.Text, parameters);

        }

    }