private void B5_Click(object sender, EventArgs e)
{
Label l21 = FindControl(panel2, "l21") as Label;
Label l22 = FindControl(panel2, "l22") as Label;
Label l23 = FindControl(panel2, "l23") as Label;
int x;
int y;
int.TryParse(l21.Text.Split(' ')[1], out x);
int.TryParse(l22.Text.Split(' ')[1], out y);
var res = f.PointInFigure(new CustomPoint(x, y));
l23.Text = "Result: " + res.ToString();
}
