Factorial of a number in C#(CSharp)

The following is an example of the factorial number. It is also recursive method. Have a look:

using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication1
{
class Program
{
public int factorial(int n)
{
int result;
if (n == 1)
return 1;
else
{
result = factorial(n - 1) * n;
return result;
}
}
static void Main(string[] args)
{
Program obj = new Program();
Console.WriteLine("Factorial of 3 is " + obj.factorial(3));
Console.WriteLine("Factorial of 4 is " + obj.factorial(4));
Console.WriteLine("Factorial of 5 is " + obj.factorial(5));

Console.ReadLine();
}
}
}

Output:

Factorial