C#实现的USB接口操作类.doc

USB在日常中已经广泛被使用，手机，MP3，MP4，相机等都采用了USB接口。本文向大家介绍一个C#实现的USB接口操作类。namespaceConsoleApplication1classProgramstaticvoidMain(stringargs)USBusb;usb=newUDisk();/插入U盘usb.OutputFile();/从U盘读出文件usb.InputFile();/往U盘写入文件usb.Dispose();/拔出U盘Console.WriteLine();usb=newMDisk();/插入移动硬盘usb.OutputFile();/从移动硬盘读出文件usb.InputFile();/往移动硬盘写入文件usb.Dispose();/拔出移动硬盘Console.WriteLine();usb=newMP4();/插入MP4usb.OutputFile();/从MP4读出文件usb.InputFile();/往MP4写入文件usb.Dispose();/拔出MP4Console.ReadKey();/USB接口publicinterfaceUSB:IDisposablevoidOutputFile();/读出文件voidInputFile();/写入文件/U盘publicclassUDisk:USBpublicUDisk()Console.WriteLine(U盘准备就绪.);publicvoidOutputFile()Console.WriteLine(从U盘读出文件);publicvoidInputFile()Console.WriteLine(往U盘写入文件);publicvoidDispose()Console.WriteLine(U盘已被拔出);/移动硬盘publicclassMDisk:USBpublicMDisk()Console.WriteLine(移动硬盘准备就绪.);publicvoidOutputFile()Console.WriteLine(从移动硬盘读出文件);publicvoidInputFile()Console.WriteLine(往移动硬盘写入文件);publicvoidDispose()Console.WriteLine(移动硬盘已被拔出);/MP4publicclassMP4:USBpublicMP4()Console.WriteLine(MP4准备就绪.);publicvoidOutputFile()Console.WriteLine(从MP4读出文件);publicvoidInputFile()Console.WriteLine(往MP4写入文件);publicvoidDispose()Console.WriteLine(MP4已被拔出);用C#写的一个读写USB口操作的类using System; using System.Collections.Generic; using System.Text; using System.Runtime.InteropServices; namespace WindowsApplication1 class Class1 DllImport(kernel32.dll) private static extern IntPtr CreateFile( String lpFileName, UInt32 dwDesiredAccess, UInt32 dwShareMode, IntPtr lpSecurityAttributes, UInt32 dwCreationDisposition, UInt32 dwFlagsAndAttributes, IntPtr hTemplateFile ); DllImport(Kernel32.dll) private static extern bool ReadFile( IntPtr hFile, byte lpBuffer, uint nNumberOfBytesToRead, ref uint lpNumberOfBytesRead, IntPtr lpOverlapped ); DllImport(Kernel32.dll) private static extern bool WriteFile( IntPtr hFile, byte lpBuffer, uint nNumberOfBytesToWrite, ref uint lpNumberOfBytesWritten, IntPtr lpOverlapped ); DllImport(kernel32.dll) private static extern bool CloseHandle( IntPtr hObject ); /- IntPtr hFile; private const UInt32 GENERIC_READ = 0x80000000; private const UInt32 GENERIC_WRITE = 0x40000000; private const UInt32 OPEN_EXISTING = 3; private const Int32 INVALID_HANDLE_VALUE = -1; private const int USB_WRITENUM = 8; private const int USB_READNUM = 8; private byte m_rd_data = new byteUSB_READNUM; public byte rd_data get return m_rd_data; set m_rd_data = value; private byte m_wr_data = new byteUSB_WRITENUM; public byte wr_data get return m_wr_data; set m_wr_data = value; public bool OnInitUSB() hFile = IntPtr.Zero; string deviceName = string.Empty; deviceName = 在这里写上你的设备的地址; hFile = CreateFile( deviceName, GENERIC_READ | GENERIC_WRITE, 0, IntPtr.Zero, OPEN_EXISTING, 0, IntPtr.Zero ); return hFile.ToInt32() = INVALID_HANDLE_VALUE ? false : true; public bool USBDataRead() uint read = 0; return ReadFile(hFile, m_rd_data, (uint)USB_READNUM, ref read, IntPtr.Zero); public bool USBDataWrite() uint written = 0; return WriteFile(hFile, m_wr_data, (uint)U