Instead of building up a comma-separated string, and then splitting that up into an array, instead perhaps consider building up a List<string> which you can check for dupes before actually adding. Here's a rough idea (untested) on what I mean by this:

List<string> hotelNodes = new List<string>();
foreach(var season in Model.Children.Where("Visible"))
{
  if (!hotelNodes.Contains(season.seasonHotels))
  {
    hotelNodes.Add(season.seasonHotels);
  }
}
string[] accommodations = hotelNodes.ToArray<string>();

This is assuming the type of season.seasonHotels is actually a string, instead of a DynamicXml or something, but if so, just add the appropriate casting where needed. Despite this, however, there are two things I'm curious about:

First, my experience with the uComponents Multi-Node Tree Picker has been that it doesn't allow me to select duplicates, even when I try.

Second, I'm thinking you could combine your two separate code blocks/loops into a single comprehensive loop? That is, don't bother with building up an array of nodes and then later iterate through them --- just loop once the first time and do your magic right there?

Best of luck to you!

Hi again

I have played around with the List<>. I wasn't able to make your suggestion work just like that. I have chaged the multi-node tree picker to save the data as XML to see if that helped enything. Right now I'm testing this:

List<string> hotelIds = new List<string>();
foreach (var s in Model.Children)
{
 if(s.seasonHotels != null)
 {
  foreach (var h in s.seasonHotels.InnerText.ToString())
  {
   hotelIds.Add(h.ToString());
  }
 }
}
<ul>
 @foreach(var hid in hotelIds)
 {
  <li>@hid</li>
 }
</ul>

It gives me this:

1
1
2
2
1
1
2
2
1
1
6
2

Not exatly what I want... Any ideas?

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