private void buttonNewMap_Click(object sender, EventArgs e)
{
HtmlElement_map map = _webpage.CreateNewMap();
if (map != null)
{
MessageBox.Show(this, string.Format(CultureInfo.InvariantCulture, "A new map is created and named '{0}'", map.id), "Create map", MessageBoxButtons.OK, MessageBoxIcon.Information);
int n = comboBox1.Items.Add(map);
comboBox1.SelectedIndex = n;
}
}