using System;
public class Program
{
class Product
private string Name;
private string model;
private int quantity;
public string name
get
return Name;
}
set
if ((value == null) || (value == ""))
throw new ArgumentException("You cannot set value to null or empty");
else
Name = value;
public static void Main()
Product r = new Product{name = "object"};
Console.WriteLine(r.name);