Assign any object to type Object variable - CSharp Custom Type

CSharp examples for Custom Type:Polymorphism

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Description

Assign any object to type Object variable

Demo Code

using System;/*from  w ww. j a  va 2  s . co  m*/
using System.Collections.Generic;
using System.Text;
public class Person
{
   private string _firstName;
   public string FirstName
   {
      get
      {
         return _firstName;
      }
   }
   private string _lastName;
   public string LastName
   {
      get
      {
         return _lastName;
      }
   }
   public int Age { get; set; }
   public Person(string firstName, string lastName, int age)
   {
      _firstName = firstName;
      _lastName = lastName;
      Age = age;
   }
}
class Program
{
   static void Main(string[] args)
   {
      object obj = new Person("A", "B", 32);
      doSomething(obj);
      List<int> list = new List<int>();
      doSomething(list);
   }
   private static void doSomething(object o)
   {
      Person p = o as Person;
      if(p == null)
      {
         throw new ArgumentException("Argument is not a person");
      }
      Console.WriteLine(p.FirstName + " " + p.LastName);
   }
}

Result


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