C#使用PCANBasic.cs获取通道名称，建立连接，发送以及接收具体程序

以下是使用PCANBasic.cs库实现CAN通讯的C#示例代码：

using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace PCANExample
{
    public partial class MainForm : Form
    {
        // PCANBasic.cs API导入
        [DllImport("PCANBasic.dll", EntryPoint = "CAN_GetValue")]
        private static extern TPCANStatus GetValue(
            UInt16 Channel, // CAN通道
            TPCANParameter Parameter, // 所需参数
            out UInt32 Buffer, // 输出参数缓冲区
            UInt32 BufferLength // 缓冲区大小
        );

        [DllImport("PCANBasic.dll", EntryPoint = "CAN_Initialize")]
        private static extern TPCANStatus Initialize(
            UInt16 Channel, // CAN通道
            TPCANBaudrate Btr0Btr1, // 波特率
            TPCANType HwType, // 硬件类型
            UInt32 IOPort, // I/O端口
            UInt16 Interrupt // 中断号
        );

        [DllImport("PCANBasic.dll", EntryPoint = "CAN_Write")]
        private static extern TPCANStatus Write(
            UInt16 Channel, // CAN通道
            ref TPCANMsg Message // CAN消息
        );

        [DllImport("PCANBasic.dll", EntryPoint = "CAN_Read")]
        private static extern TPCANStatus Read(
            UInt16 Channel, // CAN通道
            out TPCANMsg Message, // CAN消息缓冲区
            out TPCANTimestamp Timestamp // 时间戳缓冲区
        );

        // PCANBasic.cs常量定义
        private const UInt16 PCAN_USBBUS1 = 0x31;
        private const UInt16 PCAN_USBBUS2 = 0x32;
        private const UInt16 PCAN_USBBUS3 = 0x33;
        private const UInt16 PCAN_USBBUS4 = 0x34;
        private const UInt16 PCAN_USBBUS5 = 0x35;
        private const UInt16 PCAN_USBBUS6 = 0x36;
        private const UInt16 PCAN_USBBUS7 = 0x37;
        private const UInt16 PCAN_USBBUS8 = 0x38;

        private const TPCANBaudrate PCAN_BAUD_125K = TPCANBaudrate.PCAN_BAUD_125K;
        private const TPCANType PCAN_TYPE_ISA = TPCANType.PCAN_TYPE_ISA;
        private const TPCANMsgType PCAN_MESSAGE_STANDARD = TPCANMsgType.PCAN_MESSAGE_STANDARD;

        private enum TPCANParameter
        {
            PCAN_CHANNEL_VERSION = 0x0000,
            PCAN_API_VERSION = 0x0001,
            PCAN_HARDWARE_TYPE = 0x0002,
            PCAN_RECEIVE_EVENT = 0x0003,
            PCAN_MESSAGE_FILTER = 0x0004,
            PCAN_API_INITIALIZED = 0x0005,
            PCAN_CHANNEL_CONDITION = 0x0006,
            PCAN_HARDWARE_NAME = 0x0007,
            PCAN_RECEIVE_STATUS = 0x0008,
        }

        private struct TPCANMsg
        {
            public UInt32 ID; // CAN消息ID
            public TPCANMsgType MSGTYPE; // CAN消息类型
            public byte LEN; // 数据长度
            public byte[] DATA; // 数据
        }

        private struct TPCANTimestamp
        {
            public UInt32 millis; // 毫秒时间戳
            public UInt16 millis_overflow; // 毫秒溢出
            public UInt16 micros; // 微秒时间戳
        }

        private enum TPCANStatus
        {
            PCAN_ERROR_OK = 0x00000, // 操作成功
            PCAN_ERROR_XMTFULL, // 发送队列已满
            PCAN_ERROR_OVERRUN, // CAN控制器发生数据溢出
            PCAN_ERROR_BUSLIGHT, // CAN总线连接错误，可能是电缆故障
            PCAN_ERROR_BUSHEAVY, // CAN总线连接错误，可能是终端电阻故障
            PCAN_ERROR_BUSOFF, // CAN总线掉线
            PCAN_ERROR_ANYBUSERR, // 其它CAN总线错误
            PCAN_ERROR_QRCVEMPTY, // 接收队列为空
            PCAN_ERROR_QOVERRUN, // 接收队列溢出
            PCAN_ERROR_QXMTFULL, // 发送队列已满
            PCAN_ERROR_REGTEST, // CAN控制器寄存器测试错误
            PCAN_ERROR_NODRIVER, // 没有安装PCAN驱动
            PCAN_ERROR_HWINUSE, // 硬件资源已被占用
            PCAN_ERROR_NETINUSE, // 网络资源已被占用
            PCAN_ERROR_ILLHW, // 硬件配置参数无效
            PCAN_ERROR_ILLNET, // 网络配置参数无效
            PCAN_ERROR_ILLCLIENT, // 客户端参数无效
            PCAN_ERROR_ILLHANDLE, // 设备句柄无效
            PCAN_ERROR_RESOURCE, // 无法打开设备
            PCAN_ERROR_ILLPARAMTYPE, // 无效的参数类型
            PCAN_ERROR_ILLPARAMVAL, // 无效的参数值
            PCAN_ERROR_UNKNOWN, // 未知错误
        }

        public MainForm()
        {
            InitializeComponent();
        }

        private void MainForm_Load(object sender, EventArgs e)
        {
            // 获取CAN通道名称
            UInt32 dwBuffer = 0;
            TPCANStatus status = GetValue(PCAN_USBBUS1, TPCANParameter.PCAN_CHANNEL_VERSION, out dwBuffer, sizeof(UInt32));
            if (status == TPCANStatus.PCAN_ERROR_OK)
            {
                // 显示CAN通道名称
                this.Text = "CAN Channel: " + dwBuffer.ToString("X8");
            }
        }

        private void btnConnect_Click(object sender, EventArgs e)
        {
            // 建立连接
            TPCANStatus status = Initialize(PCAN_USBBUS1, PCAN_BAUD_125K, PCAN_TYPE_ISA, 0, 0);
            if (status == TPCANStatus.PCAN_ERROR_OK)
            {
                MessageBox.Show("Connect successful!");
            }
            else
            {
                MessageBox.Show("Connect failed! Error code: " + ((int)status).ToString("X"));
            }
        }

        private void btnSend_Click(object sender, EventArgs e)
        {
            // 构造CAN消息
            TPCANMsg message = new TPCANMsg();
            message.ID = 0x123;
            message.MSGTYPE = PCAN_MESSAGE_STANDARD;
            message.LEN = 8;
            message.DATA = new byte[8] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };

            // 发送CAN消息
            TPCANStatus status = Write(PCAN_USBBUS1, ref message);
            if (status != TPCANStatus.PCAN_ERROR_OK)
            {
                MessageBox.Show("Send failed! Error code: " + ((int)status).ToString("X"));
            }
        }

        private void btnReceive_Click(object sender, EventArgs e)
        {
            // 接收CAN消息
            TPCANMsg message = new TPCANMsg();
            TPCANTimestamp timestamp = new TPCANTimestamp();
            TPCANStatus status = Read(PCAN_USBBUS1, out message, out timestamp);

            // 显示CAN消息
            if (status == TPCANStatus.PCAN_ERROR_OK)
            {
                string data = "";
                for (int i = 0; i < message.LEN; i++)
                {
                    data += message.DATA[i].ToString("X2") + " ";
                }
                MessageBox.Show("ID: " + message.ID.ToString("X") + "\nData: " + data);
            }
            else
            {
                MessageBox.Show("Receive failed! Error code: " + ((int)status).ToString("X"));
            }
        }
    }
}

该程序基本上包含了常用的CAN通讯功能，包括获取CAN通道名称、建立连接、发送CAN消息以及接收CAN消息。需要注意的是，在使用PCANBasic.cs库前需要先安装Peak CAN驱动。