private void BtnLogout_Click(object sender, EventArgs e)
{
CoffeeHouse ch = new CoffeeHouse();
ch.Show();
txtFoodName.Text = txtUpdatedPrice.Text = "";
this.Hide();
}
private void BtnBack_Click(object sender, EventArgs e)
{
CoffeeHouse c = new CoffeeHouse();
c.Show();
txtUN.Text = txtPass.Text = "";
this.Hide();
}