private void toolStripButton2_Click(object sender, EventArgs e)
{
frmDiciplina a = new frmDiciplina();
a.MdiParent = this;
a.Show();
}
private void disciplinaToolStripMenuItem_Click(object sender, EventArgs e)
{
frmDiciplina a = new frmDiciplina();
a.MdiParent = this;
a.Show();
}