using System;

using System.Collections.Generic;

using System.Linq;

public class Person  

{  

    public string name{get; set;}  

    public string gender{get; set;}  

    public DateTime DOB{get; set;}

}  

public class Doctor : Person  

{  

    public int id{get; set;}  

    public string Specilized{get; set;}

    public Boolean isdoctor= true;

}

public class Patient : Person  

{  

    public int id{get; set;}  

    public string Affected{get; set;}

}

public class Finder

{

    public void Find<T>(List<T> personlist,string Name)

    {

        if(personlist[0].GetType().ToString() == "Doctor")

        {

        var doclist = personlist.Cast<Doctor>().ToList();

        if (doclist.Any())

        {

            var namefilterlist = doclist.Where(x => x.name.Contains(Name));

            foreach(var namefilter in namefilterlist)

            {

                Console.WriteLine("Doctor Name: {0}",namefilter.name);

                Console.WriteLine("Doctor Specilized in : {0}",namefilter.Specilized);

            }

        }

        }

        else

        {

            var patlist = personlist.Cast<Patient>().ToList();

            var patfilterlist = patlist.Where(x => x.name.Contains(Name)).ToList();

            foreach(var namefilter in patfilterlist)

            {

                Console.WriteLine("Patient Name: {0}",namefilter.name);

                Console.WriteLine("Patient Affected : {0}",namefilter.Affected);

            }

        }

    }

}

public class TestClass  

{  

    public static void Main()  

    {

        List<Doctor> docnamelist = new List<Doctor>();

        Doctor dc = new Doctor();  

        dc.id = 1;

        dc.name = "Venkadesh";

        dc.DOB = Convert.ToDateTime("10-11-1989");

        dc.gender = "Male";

        dc.Specilized = "Heart";

        docnamelist.Add(dc);

        Doctor dc1 = new Doctor();  

        dc1.id = 2;

        dc1.name = "Jega";

        dc1.DOB = Convert.ToDateTime("10-11-1989");

        dc1.gender = "Male";

        dc1.Specilized = "Child";

        docnamelist.Add(dc1);

        Finder fdr = new Finder();

        fdr.Find<Doctor>(docnamelist , "Ven");

        List<Patient> patnamelist = new List<Patient>();

        Patient pat = new Patient();

        pat.id = 1;

        pat.name = "Reshma";

        pat.DOB = Convert.ToDateTime("10-11-2018");

        pat.gender = "FeMale";

        pat.Affected = "Fever";

        patnamelist.Add(pat);

        Patient pat1 = new Patient();

        pat1.id = 2;

        pat1.name = "Krish";

        pat1.DOB = Convert.ToDateTime("10-11-1968");

        pat1.gender = "Male";

        pat1.Affected ="Cold";

        patnamelist.Add(pat1);

        fdr.Find<Patient>(patnamelist,"Krish");

    }  

}