private void R2NextB_Click(object sender, System.EventArgs e)
{
if (AddTB.Text != "")
{
if (SC.Step3(AddTB.Text, double.Parse(LatTB.Text), double.Parse(LngTB.Text)))
{
Registration1.Visible = false;
Registration3.Visible = false;
Registration2.Visible = false;
Registration4.Visible = true;
}
}
}