using System.Collections.Generic;
static void Main(string[] args)
List<Person> list = new List<Person> { new Person { Name="a1", Surname="s1" },
new Person { Name="a2", Surname="s2" },
new Person { Name="a11", Surname="s11" }};
var q1 = list.AsQueryable();
Console.WriteLine("Hello World!");
foreach (var item in q1.Where(w=>w.Name.Contains("1")))
Console.WriteLine($"{item.Name} {item.Surname}");
public string Name { get; set; }
public string Surname { get; set; }