private void btnNewUser_Click(object sender, EventArgs e)
        {
            frmUserInfo info = new frmUserInfo(userID);

            if (info.ShowDialog() == DialogResult.OK)
            {
                ShowUsers();
            }
        }
        private void btnEditUser_Click(object sender, EventArgs e)
        {
            if (dgvUserInformationList.Rows.Count > 0)
            {
                editID = dgvUserInformationList.SelectedRows[0].Cells[0].Value.ToString();

                frmUserInfo info = new frmUserInfo(userID, editID);
                if (info.ShowDialog() == DialogResult.OK)
                {
                    ShowUsers();
                }
            }
            else
            {
                MessageBox.Show("No record to edit!", "Edit", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            }
        }