Distinct of List not workiong

Distinct of List not workiong

I have this class with comparer
public partial class CityCountryID :IEqualityComparer<CityCountryID>
{
public string City { get; set; }
public string CountryId { get; set; }
public bool Equals(CityCountryID left, CityCountryID right)
{
if ((object)left == null && (object)right == null)
{
return true;
}
if ((object)left == null || (object)right == null)
{
return false;
}
return left.City.Trim().TrimEnd('\r', '\n') ==
right.City.Trim().TrimEnd('\r', '\n')
&& left.CountryId == right.CountryId;
}
public int GetHashCode(CityCountryID obj)
{
return (obj.City + obj.CountryId).GetHashCode();
}
}
I Tried using Hashset and Distinct but neither one is working. i did not
want to do this in db as the list was too big and too for everrrrrrrr. why
is this not working in c#? i want to get a unique country, city list.
List<CityCountryID> CityList = LoadData("GetCityList").ToList();
//var unique = new HashSet<CityCountryID>(CityList);
Console.WriteLine("Loading Completed/ Checking Duplicates");
List<CityCountryID> unique = CityList.Distinct().ToList();