AHRSInterface.AHRSInterface.opend3dcube_Click C# (CSharp) Method

        private void opend3dcube_Click(object sender, EventArgs e)
        {
            if (!form_3DcuboidA.Visible)
            {
                //form_3DcuboidA = null;
                form_3DcuboidA.Refresh();
                form_3DcuboidA.Text += " A";
                BackgroundWorker backgroundWorkerA = new BackgroundWorker();
                backgroundWorkerA.DoWork += new DoWorkEventHandler(delegate { form_3DcuboidA.ShowDialog(); });
                backgroundWorkerA.RunWorkerAsync();
            }
        }