20160612-new-import.cs

public List<RssChannel> ParseToRssChannelList(OpmlImporterIndexDto dto)
{
    var outlines = this.opmlHandler.GetOutlines(dto.ImportFile.InputStream);
    var ot = this.FilterOutInvalidOutlines(outlines);
    var urls = ot.Select(o =>
              new RssChannel(
                  o.Attributes.GetNamedItem("xmlUrl").Value,
                  o.Attributes.GetNamedItem("title").Value))
        .ToList();
    return urls;
}

public List<XmlNode> FilterOutInvalidOutlines(IEnumerable<XmlNode> outlines)
{
    var validoutlines = outlines.Where(o =>
             o.Attributes.GetNamedItem("xmlUrl") != null
          && o.Attributes.GetNamedItem("title") != null
          && !String.IsNullOrWhiteSpace(o.Attributes.GetNamedItem("xmlUrl").Value)
          && !String.IsNullOrWhiteSpace(o.Attributes.GetNamedItem("title").Value));

    return validoutlines.ToList();
}