private void library_btn_Click(object sender, EventArgs e)
        {
            libraryAdmin la = new libraryAdmin();

            la.Show();
            this.Hide();
        }
        public void showData()
        {
            la = new loginAuthentication();
            if (comboBoxValue == "Addmission Department")
            {
                admissionDepartAdmin ad = new admissionDepartAdmin();
                ad.Show();
                la.Hide();
            }
            else if (comboBoxValue == "Finance")
            {
                //financeAdmin fa = new financeAdmin();

                FinanceAdministration fa = new FinanceAdministration();
                fa.Show();

                la.Hide();
            }
            else if (comboBoxValue == "Library")
            {
                libraryAdmin lab = new libraryAdmin();
                lab.Show();
                la.Hide();
            }
            else if (comboBoxValue == "Master Admin")
            {
                masterAdmin ma = new masterAdmin();
                ma.Show();
                la.Hide();
            }

            else if (comboBoxValue == "Human Resource")
            {
                humanResourcesAdmin hra = new humanResourcesAdmin();
                hra.Show();
            }
        }