private void deleteButton_Click(object sender, EventArgs e)
        {
            if (userList.SelectedItems.Count == 0)
            {
                MessageBox.Show("Please select a user first", "Error");
                return;
            }

            uint ID = 0;

            try
            {
                ID = UInt32.Parse(userList.SelectedItems[0].Text);
            }
            catch (Exception)
            {
                MessageBox.Show("Invalid ID", "Error");
                return;
            }

            Cursor.Current = Cursors.WaitCursor;

            int result = BSSDK.BS_DeleteUser(m_Handle, ID);

            Cursor.Current = Cursors.Default;

            if (result != BSSDK.BS_SUCCESS)
            {
                MessageBox.Show("Cannot delete the user", "Error");
                return;
            }

            ReadUserInfo();
        }