Trying to string.Join an IList and outputting the results to console - linq

Question

Using "string.Join(",", test);" works but for some reason I get an output of:
"Ilistprac.Location, Ilistprac.Location, Ilistprac.Location"
I tried ToString, Convert.ToString, etc and I still get that output.
All the IList interfaces are implemented with the IEnurmerable too (just not listed here unless someone wants me to).
class IList2
{
static void Main(string[] args)
{
string sSite = "test";
string sBldg = "test32";
string sSite1 = "test";
string sSite2 = "test";
Locations test = new Locations();
Location loc = new Location();
test.Add(sSite, sBldg)
test.Add(sSite1)
test.Add(sSite2)
string printitout = string.Join(",", test); //having issues outputting whats on the list
}
}
string printitout = string.Join(",", test.ToArray<Location>);
public class Location
{
public Location()
{
}
private string _site = string.Empty;
public string Site
{
get { return _site; }
set { _site = value; }
}
}
public class Locations : IList<Location>
{
List<Location> _locs = new List<Location>();
public Locations() { }
public void Add(string sSite)
{
Location loc = new Location();
loc.Site = sSite;
loc.Bldg = sBldg;
_locs.Add(loc);
}
private string _bldg = string.Empty;
public string Bldg
{
get { return _bldg; }
set { _bldg = value; }
}
}

Answer 1

You need to supply a useful ToString implementation for Location as Join is calling that for each element. The default implementation will just return the name of the type. See documentation.
So if you have a type like
class SomeType
{
public string FirstName { get; private set; }
public string LastName { get; private set; }
public SomeType(string first, string last)
{
FirstName = first;
LastName = last;
}
public override string ToString()
{
return string.Format("{0}, {1}", LastName, FirstName);
}
}
You need to specify how that should be represented as a string. If you do that, you can use string.Join like this to produce the output below.
var names = new List<SomeType> {
new SomeType("Homer", "Simpson"),
new SomeType("Marge", "Simpson")
};
Console.WriteLine(string.Join("\n", names));
Output:
Simpson, Homer
Simpson, Marge

Answer 2

You have to override ToString() inc your Location class to provide some meaningful output if you want to keep your current approach, E.g.:
public override string ToString()
{
return Site;
}