private void button1_Click(object sender, EventArgs e)
{
//check that fields have been filed in
//add ID to the users list
if (Register.Text.Equals("Unregister"))
{
t.RemoveEntrant(me.ID);
me.RemoveTournament(t.GetID());
Register.Text = "Register";
}
else if (textBox1.Text.Any() && Register.Text == "Register")
{
//add tag checking
t.AddEntrant(new Entrant(me, textBox1.Text));
me.AddTournament(t.GetID());
Register.Text = "Unregister";
}
else
{
label9.Text = "Please Enter a Tag";
}
UpdateDisplayEntrants();
//otherwise remove the id and the user from the list of entrants
}