gistfile1.txt

private void TagProfile(TrackingField trackingField, Item item)
{
    var trackingValue = item.Fields["__Tracking"].Value;

    var editorial = trackingField.Profiles.FirstOrDefault(p => p.Name.Equals("Editorial"));

    if (editorial != null)
    {
        var editorialProfileItem = new ProfileItem(editorial.GetProfileItem());

        var presetInfo = GetProfileCard(editorialProfileItem);

        var dictionary = new Dictionary<string, float>();

        var presetCount = 100 / presetInfo.Count;

        foreach (var info in presetInfo)
        {
            dictionary.Add(info.Key, presetCount);
        }

        editorial.SaveToField = true;
        editorial.Presets = dictionary;
        SetProfileKeys(editorial, editorialProfileItem);

        TrackingField.UpdateKeyValues(editorial);
    }

    documents = string.IsNullOrEmpty(trackingValue) ? new XDocument(new XElement("tracking")) : XDocument.Parse(trackingValue);

    XDocument document = documents;
    XElement xelement1 = document.Element("tracking");
    if (xelement1 == null)
    {
        xelement1 = new XElement("tracking");
        document.Add(xelement1);
    }
    List<XElement> list = xelement1.Elements("profile").ToList();

    foreach (XElement t in list)
    {
        t.Remove();
    }

    foreach (XElement xelement2 in trackingField.Profiles.Where(profile => profile.SaveToField).Select(profile => profile.ToXElement()))
        xelement1.Add(xelement2);

    using (new SecurityDisabler())
    {
        item.Editing.BeginEdit();
        item.Fields["__Tracking"].Value = document.ToString();
        item.Editing.EndEdit();
    }
}