c# - Clone or Duplicate the first object and Insert to the same list -

i have list of phones came database, , clone first entry , insert same list (updated entry).

    list<phones> p = new list<phones>     {         new phones { id = 1, phone = "samsung s3" },         new phones { id = 2, phone = "iphone 5" },         new phones { id = 3, phone = "samsung s4" },         new phones { id = 4, phone = "samsung s5" },         new phones { id = 5, phone = "iphone 5s" },         new phones { id = 6, phone = "iphone 6" },     }; 

currently used below approach. first entry updates also.

    var obj = p.firstordefault();     var t = new phones();      t = obj;     t.id = 7;     p.add(t);   public class phones {     public int id { get; set; }     public string phone { get; set; }     public bool ischild { get; set; } } 

class call reference if change value changing first member well. can clone phone, should implement iclonable interface, consider link implementing iclonable

public class phones : icloneable     {         public int id { get; set; }         public string phone { get; set; }         public bool ischild { get; set; }          public object clone()         {             return new phones()             {                 id = this.id,                 phone = this.phone,                 ischild = this.ischild             };         }     }