要實現C#中WinUSB設備的雙向通信，需要使用WinUSB API來進行USB設備的控制和通信。以下是一個簡單的示例，演示如何通過C#實現與WinUSB設備的雙向通信：

using System;
using System.Runtime.InteropServices;
using Microsoft.Win32.SafeHandles;

public class WinUSBCommunication
{
    // WinUSB API定義
    [DllImport("winusb.dll", SetLastError = true)]
    public static extern bool WinUsb_Initialize(SafeFileHandle deviceHandle, out IntPtr winusbHandle);

    [DllImport("winusb.dll", SetLastError = true)]
    public static extern bool WinUsb_Free(IntPtr winusbHandle);

    [DllImport("winusb.dll", SetLastError = true)]
    public static extern bool WinUsb_ReadPipe(IntPtr winusbHandle, byte pipeID, byte[] buffer, uint bufferLength, out uint bytesRead, IntPtr overlapped);

    [DllImport("winusb.dll", SetLastError = true)]
    public static extern bool WinUsb_WritePipe(IntPtr winusbHandle, byte pipeID, byte[] buffer, uint bufferLength, out uint bytesWritten, IntPtr overlapped);

    // USB設備路徑
    private const string DevicePath = @"\\?\USB#VID_XXXX&PID_XXXX#XXXX#{XXXX}#";

    // USB設備句柄
    private SafeFileHandle deviceHandle;

    // WinUSB句柄
    private IntPtr winusbHandle;

    public WinUSBCommunication()
    {
        // 打開USB設備
        deviceHandle = CreateFile(DevicePath, FileAccess.ReadWrite, FileShare.ReadWrite, IntPtr.Zero, FileMode.Open, FileAttributes.Normal, IntPtr.Zero);

        // 初始化WinUSB
        WinUsb_Initialize(deviceHandle, out winusbHandle);
    }

    public void ReadData()
    {
        // 讀取數據
        byte[] buffer = new byte[64];
        uint bytesRead;
        WinUsb_ReadPipe(winusbHandle, 0x81, buffer, (uint)buffer.Length, out bytesRead, IntPtr.Zero);

        // 處理接收到的數據
        Console.WriteLine("Received data: " + BitConverter.ToString(buffer));
    }

    public void WriteData(byte[] data)
    {
        // 寫入數據
        uint bytesWritten;
        WinUsb_WritePipe(winusbHandle, 0x01, data, (uint)data.Length, out bytesWritten, IntPtr.Zero);

        Console.WriteLine("Data written successfully.");
    }

    public void Close()
    {
        // 釋放WinUSB句柄
        WinUsb_Free(winusbHandle);

        // 關閉USB設備
        deviceHandle.Close();
    }

    // 創建文件句柄
    [DllImport("kernel32.dll", SetLastError = true)]
    private static extern SafeFileHandle CreateFile(string lpFileName, FileAccess dwDesiredAccess, FileShare dwShareMode, IntPtr lpSecurityAttributes, FileMode dwCreationDisposition, FileAttributes dwFlagsAndAttributes, IntPtr hTemplateFile);
}

在這個示例中，我們首先定義了WinUSB API的相關函數，并創建了一個WinUSBCommunication類來封裝USB設備的通信操作。在構造函數中，我們打開了USB設備并初始化了WinUSB句柄。然后，我們提供了ReadData和WriteData方法來進行數據的讀取和寫入操作。最后，在Close方法中，我們釋放了WinUSB句柄并關閉了USB設備。

請注意，示例中的DevicePath需要根據實際的USB設備路徑進行修改，0x81和0x01是讀寫數據的端點地址，需要根據具體的USB設備端點配置進行修改。

此示例僅為基本示例，實際應用中可能需要根據具體的USB設備配置和通信協議進行相應的調整和優化。