void Boxmethod()
{
sample s = new sample();
bool b;
object ob = "CSHARP";
b = s.obj is int;
Console.WriteLine(b);
s.obj = x;
b = s.obj is int;
Console.WriteLine("{0},{1},{2}", s.obj, s.x, b);
s.x = (int)s.obj;
s.x = 20;
b = s.obj is int;
Console.WriteLine("{0},{1},{2}", s.obj, s.x, b);
s.obj = "CSHARP";
b = s.obj is int;
Console.WriteLine("{0},{1},{2}", s.obj, s.x, b);
Console.ReadLine();
}
public static void Main()
{
sample s = new sample();
s.Boxmethod();
}
