private void toolStripButton2_Click(object sender, EventArgs e)
{
btnNextStep.Text = "下一步";
txtSerialNum.Text = "";
demarcateDataUploadForm.CloseSerialPort();
qRCodePrintForm.Close();
pageNum = 1;
toolStripButton1.Enabled = true;
foreach (Control c in panel2.Controls)
{
c.Visible = true;
}
demarcateDataUploadForm.Visible = false;
//demarcateDataUploadForm.setOperatorFormBtnDelegate -= new setFormBtnDelegate(setFormComBtn);
//demarcateDataUploadForm = new DemarcateDataUploadForm();
qRCodePrintForm = new QRCodePrintForm();
//demarcateDataUploadForm.setOperatorFormBtnDelegate += new setFormBtnDelegate(setFormComBtn);
}