I am facing a problem in creating a console application in Visual Studio c# 2005

I created the following program in which a method (to sum 2 predefined values) is called in the program

here is the code of it

```
class program
{
    static void Main()
    {
        program a;
        a = new program();
        Console.WriteLine(a.am1(1,2));
        Console.ReadLine();
    }
    int sum;
    public int am1(int num1, int num2)
    {
        sum = num1 + num2;
        return sum;
    }
}

```

Now here is the main problem I am facing, well in this program two integers (num1 and num2) are predefined, I wanted those 2 numbers to be taken from user, means user input the two numbers and then the same program goes on like above. How it should be done?

P.S remember everything should be done in methods