private void MainForm_Load(object sender, EventArgs e)
{
timer.Start();
labelCurrentTime.Text = DateTime.Now.ToLongTimeString();
CoatACount.Hide();
CoatBCount1.Hide();
}
private void buttonCoatD_Click(object sender, EventArgs e)
{
CoatD1.Show();
CoatCCount1.Hide();
CoatACount.Hide();
CoatBCount1.Hide();
}