Copy & Paste the following codes in LinqPad. And, in LinqPad's Language dropdown > choose "C# Program" and press F5 to run:
void Main()
{
var userprofileList = new UserProfile { FirstName = "John" , LastName = "Doe" };
var userprofileList1 = new UserProfile { FirstName = "Juan" , LastName = "Dela Cruz" };
var countryList = new Country{ Population= 105, City = "Cebu"};
var arrlist = new ArrayList();
arrlist.Add(userprofileList);
arrlist.Add(countryList);
arrlist.Add(userprofileList1);
arrlist.Dump();
var filteredList = arrlist.OfType<UserProfile>();
("OfType() result.").Dump();
filteredList.Dump();
var myFilteredList = arrlist.Cast<object>().ToList().FilterArr<UserProfile>();
("Custom type-filtering FilterArr() method result.").Dump();
myFilteredList.Dump();
}
public static class Extensions
{
public static List<X> FilterArr<X>(this IEnumerable<dynamic> source) where X : class
{
var filterList = source.Where(itm => itm is X).Cast<X>();
return filterList.ToList();
}
}
public class UserProfile
{
public string FirstName { get;set; }
public string LastName { get;set; }
}
public class Country
{
public int Population { get;set; }
public string City { get;set; }
}
