Serial port C++/CLI第二种形式的相同串行端口

我正在编写一个程序，向串口发送命令。 到目前为止，通信工作正常

现在，我添加了一个新表单，我想找到端口名并在新表单中打开端口。之后，我想在我的第一个表单中使用连接的串行端口

我总是会出错：

错误1错误C2039:“SerialPort”：不是“test3:：Form2”的成员

表格1：

#pragma once
#include <windows.h>
#using <System.dll>
#include <iostream>     //for using cout
#include <stdlib.h>     //for using the function sleep
#include <string>
#include <sstream>
#include <msclr/marshal_cppstd.h>
#include <time.h>
#include <stdio.h>
#include <ctime>
#include <cstdio>
#include "Form2.h"

namespace test3 {

    using namespace System;
    using namespace System::ComponentModel;
    using namespace System::Collections;
    using namespace System::Windows::Forms;
    using namespace System::Data;
    using namespace System::Drawing;
    using namespace System::IO::Ports;
    using namespace std;
    using namespace System::Diagnostics;
    using namespace System::IO;

    /// <summary>
    /// Summary for Form1
    /// </summary>
    public ref class Form1 : public System::Windows::Forms::Form

    {
    public:

        Form1(void)
        {
            InitializeComponent();
            findPorts();



                 // disable this text field

                 this->textBox2->Enabled = false;
            //
            //TODO: Add the constructor code here
            //

        }



    protected:
        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        ~Form1()
        {
            if (components)
            {
                delete components;
            }
        }
    private: System::IO::Ports::SerialPort^  _serialPort;

private: System::Void button10_Click(System::Object^  sender, System::EventArgs^  e) {

             Form^ f2= gcnew Form2(this->_serialPort);
             f2->Show();
         }
};

表格2：

#pragma once
#include <windows.h>
#using <System.dll>
#include <iostream>     //for using cout
#include <stdlib.h>     //for using the function sleep
#include <string>
#include "Form1.h"

namespace test3 {

    using namespace System;
    using namespace System::ComponentModel;
    using namespace System::Collections;
    using namespace System::Windows::Forms;
    using namespace System::Data;
    using namespace System::Drawing;
    using namespace System::IO::Ports;
    using namespace std;
    using namespace System::Diagnostics;
    using namespace System::IO;

    /// <summary>
    /// Summary for Form2
    /// </summary>
    public ref class Form2 : public System::Windows::Forms::Form
    {

    public:
        Form2(SerialPort^ _serialPort)
        {
            InitializeComponent();




                this->SerialPort = _serialPort;


            //
            //TODO: Add the constructor code here
            //
        }

    protected:
        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        ~Form2()
        {
            if (components)
            {
                delete components;
            }
        }

---

“test3:：Form2”中没有“SerialPort”成员字段或属性。编译器错误很明显。只需添加一个新的字段/属性来存储您在Form2的构造函数中接收到的引用。我该怎么做？我对这个C++/CLIWell不太了解，正如您对Form1所做的：“private:System:：IO:：Ports:：SerialPort^_SerialPort；”好的，谢谢，现在可以了，但是我现在如何使用form2中form1的serialport，例如打开端口或其他什么？此->\u serialport不起作用，form1->\u serialport也不起作用。对不起，我对这种类型的编程非常陌生