Question

I have a method:

 private int[] ParseBusyPlace(string xml)
       {
           var busyPlaces = from element in XDocument.Parse(xml).Descendants("Place")
                            select new []
                                       {
                                            (int) element.Attribute("ID")
                                       };

           return busyPlaces; // error

       }

This query return IEnumerable<int[]>. How to return array of int?

Answer 1

Özgür Kara’s answer is absolutely correct, but I would rewrite it to not use a query expression, given that it’s just a from / select:

private int[] ParseBusyPlace(string xml)
{
    return XDocument.Parse(xml)
                    .Descendants("Place")
                    .Select(element => (int) element.Attribute("ID"))
                    .ToArray();
}

I’d also consider returning a List<int> instead of an array, as they’re generally more pleasant to work with, but that’s a different matter.