private void данныеДляПроверкиToolStripMenuItem_Click(object sender, EventArgs e)
{
DataBlackBox dataBlackBox = new DataBlackBox(Convert.ToInt32(numPrepod));
dataBlackBox.Show();
}
private void button4_Click(object sender, EventArgs e)
{
DataBlackBox dataBlackBox = new DataBlackBox(Convert.ToInt32(numPrepod));
dataBlackBox.Show();
this.Hide();
}