[ToolStripMenuItem]:动态添加下拉列表并设置Checked

[ltj1682]

其中Port_Option_tmi 一个[ToolStripMenuItem]，相当于文件-》打开的情况。
我要动态获取本机可用串口，
并添加为Port_Option_tmi的子菜单，只能单选。

#region 选择端口

        private void GetSerialPort()   //获取串口列表                                             
        {
            RegistryKey keyCom = Registry.LocalMachine.OpenSubKey("Hardware\\DeviceMap\\SerialComm");
            if (keyCom != null)
            {
                string[] sSubKeys = keyCom.GetValueNames();
                foreach (string sName in sSubKeys)
                {
                    string sValue = (string)keyCom.GetValue(sName);
                    Port_Option_tmi.DropDownItems.Add(sValue, null, new EventHandler(NoPort_Click));
                }
            }
        }

        private void NoPort_Click(object sender, EventArgs e)
        {
            ToolStripMenuItem mi = (ToolStripMenuItem)sender;
            for (int i = 0; i < Port_Option_tmi.DropDownItems.Count; i++)
            {
                //在这里写除去所有子菜单Checked代码
            }
            mi.Checked=true;

            port = mi.Text;
            Port_Main_ss.Text = port;
        }
#endregion

[ltj1682]

                ((ToolStripMenuItem)(Port_Option_tmi.DropDownItems[i])).Checked = false;    //需要强制转化

[willwayer]

学习了 tahnk you！~