private void button1_Click_1(object sender, EventArgs e)
        {
            FormaPrincipala fp = new FormaPrincipala();

            fp.Show();
            this.Hide();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            Con.Open();
            SqlDataAdapter sda = new SqlDataAdapter("select COUNT(*) from Personal_tbl where NumePersonal='" + numeutilizatortb.Text + "'and ParolaPersonal='" + parolatb.Text + "' ", Con);
            DataTable      dt  = new DataTable();

            sda.Fill(dt);
            if (dt.Rows[0][0].ToString() == "1")
            {
                FormaPrincipala fp = new FormaPrincipala();
                fp.Show();
                this.Hide();
            }
            else
            {
                MessageBox.Show("Wrong NumeUtilizator or Parola");
            }
            Con.Close();
        }