ASP.NET中实现数据库备份

static string pathBak;
    /// <summary>
    /// 备份SQL数据库
    /// </summary>
    /// <param name="databasename">要备份的数据源名称</param>
    /// <param name="backuptodatabase">备份到的数据库文件名称及路径.bak</param>
    /// <returns>返回生成的备份文件全路径名</returns>
    public string BakSql(string databaseName, string bakPath)
    {
        try
        {
            //声明临时数据库名称
            string bakName = string.Empty;
            if (bakPath.IndexOf(".bak") < 0)
            {
                bakName = databaseName;
                bakName += DateTime.Now.Year.ToString();
                bakName += DateTime.Now.Month.ToString();
                bakName += DateTime.Now.Day.ToString();
                bakName += DateTime.Now.Hour.ToString();
                bakName += DateTime.Now.Minute.ToString();
                bakName += DateTime.Now.Second.ToString();
                bakName += ".bak";
                if (bakPath.LastIndexOf('\\') != bakPath.Length)
                    bakPath += '\\';
            }
            FileInfo fi = new FileInfo(bakPath);
            if (!Directory.Exists(fi.DirectoryName))
                Directory.CreateDirectory(fi.DirectoryName);
            bakPath = bakPath + bakName;
            pathBak = bakPath;
            bakPath = bakPath.Replace("\\", "/");
            string sqlbak = string.Format("BACKUP DATABASE " + databaseName + " TO DISK = '{0}' WITH INIT", bakPath);
            if (SqlHelper.ExecuteNonQuery(Common.objCom.GetConnectionString("DBMaster"), CommandType.Text, sqlbak) != 0)
                return pathBak;
            else
                return string.Empty;
        }
        catch (Exception ex)
        {
            lbTip.Text = ex.Message;
            lbTip.ForeColor = Color.FromName("#FF8080");
            return string.Empty;
        }
    }

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