private void button4_Click(object sender, EventArgs e)
{
if (MessageBox.Show("Are you sure you want to perform this operation?", "Question", MessageBoxButtons.YesNo) == DialogResult.Yes)
{
Hide();
Form_login form_login = new Form_login();
form_login.Show();
}
}
private void ustawieniaToolStripMenuItem_Click(object sender, EventArgs e)
{
Form_login form_participants = new Form_login();
form_participants.Show();
}
