private void stergereSubstanteToolStripMenuItem_Click(object sender, EventArgs e)
{
StergeDate sterg = new StergeDate("Substanta");
sterg.ShowDialog();
}
private void stergereAcvariuToolStripMenuItem_Click(object sender, EventArgs e)
{
StergeDate sterg = new StergeDate("Acvariu");
sterg.ShowDialog();
}