在C#中使内存映射文件方式进行文件读写, 文件读写功能由一个C++写的DLL提供. 附件内含有完整的DLL工程和C#调用工程.-In the C# Make the memory-mapped files of papers to read and write, file read and write function by a C++ Provide written DLL. Annex DLL contains a complete engineering and C# Call works