c#通过文件句柄获取文件名
[DllImport("kernel32.dll")]static extern uint GetFileSize(IntPtr hFile, IntPtr lpFileSizeHigh);[DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]public static extern IntPtr CreateFileMapping( IntPtr hFile, IntPtr lpFileMappingAttributes, FileMapProtection flProtect,