HTML ポップアップの利用

private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouset e)
{
    IHTMLPopupIdentify pHTMLPopupIdentify = (IHTMLPopupIdentify)axMapControl1.Mayer(0);

    IPoint pPoint = new PointClass();
    pPoint.X = e.mapX;
    pPoint.Y = e.mapY;

    MessageBox.Show(pHTMLPopupIdentify.HTMLIdentify(pPoint, 1)); //XMLで返される
}