static void ViewMap_Click(object sender, EventArgs e) { if (_form != null) { _form.Close(); } _form = new MouseHeatMapForm(); _form.Points = _dictionary; _form.Show(); _form.FormClosed += new FormClosedEventHandler(_form_FormClosed); }
static void _form_FormClosed(object sender, FormClosedEventArgs e) { _form.Dispose(); _form = null; }