My Multiplication Code

public void TestMultiply()
{
    var ecParameters = Org.BouncyCastle.Asn1.Nist.NistNamedCurves.GetByName("P-256");

    for (int i = 1; i < 21; i++)
    {
        Console.Out.WriteLine("\nk = " + i);
        var point = ecParameters.G.Multiply(new BigInteger(i.ToString(), 10));
        Console.Out.WriteLine("x = " + point.XCoord.ToString().ToUpper());
        Console.Out.WriteLine("y = " + point.YCoord.ToString().ToUpper());
    }
}