private void label4_Click(object sender, EventArgs e)
{
this.Hide();
var home = new GiaoDienChoi(this.ten, this.id);
home.Closed += (s, args) => this.Close();
home.Show();
}
private void btnBatDau_Click(object sender, EventArgs e)
{
j.Stop();
this.Hide();
var giaoDienChoi = new GiaoDienChoi(this.ten, this.id);
giaoDienChoi.Closed += (s, args) => this.Close();
giaoDienChoi.Show();
}