3.2 traingulo ,area consola y windows

CODIGO EN CONSOLA

static void Main(string[] args)
{
double p, area, a, b, c;
Console.WriteLine("Introdusca las 3 longitudes");
a = double.Parse(Console.ReadLine());
b = double.Parse(Console.ReadLine());
c = double.Parse(Console.ReadLine());
p = (a + b + c) / 2;
area = Math.Sqrt(p*(p - a) * (p - b) * (p - c));
Console.WriteLine("ela area del trigualo es igual a {1}",p, area);
Console.ReadKey();

}





CODIGO EN WINDOWS

public Form1()
{
a = b = c = p = area = 0;

InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
a = double.Parse(textBox1.Text);
b = double.Parse(textBox2.Text);
c = double.Parse(textBox3.Text);
p = (a + b + c) / 2;
textBox4.Text = p.ToString();
area=Math.Sqrt(p*(p-a)*(p-b)*(p-c));
textBox5.Text = area.ToString();


}