//加载选择设备窗口
private void MainForm_Load(object sender, EventArgs e)
{
checkDevice cd = new checkDevice();
cd.ShowDialog();
}
//菜单栏添加设备窗口
private void 添加设备ToolStripMenuItem_Click(object sender, EventArgs e)
{
checkDevice cd = new checkDevice();
cd.ShowDialog();
}