private void btnGoTofrmSecretary_Click(object sender, EventArgs e)
{
frmSecretary frmSecretary = new frmSecretary();
this.Hide();
frmSecretary.ShowDialog();
}
private void btnGoBack_Click(object sender, EventArgs e)
{
frmSecretary frmSecretary = new frmSecretary();
frmSecretary.Show();
this.Close();
}