using System;

using System.Runtime.InteropServices;

​

namespace ApiReference {

    public class ApiExample {

        [DllImport("kernel32")]

        static extern IntPtr CreateFile(string lpFileName, uint dwDesiredAccess, uint dwShareMode, IntPtr lpSecurityAttributes, uint dwCreationDisposition, uint dwFlagsAndAttributes, IntPtr hTemplateFile);

        [DllImport("kernel32")]

        static extern void CloseHandle(IntPtr hObject);

        const uint CREATE_ALWAYS    = 0x00000001;

        const uint GENERIC_WRITE    = 0x40000000;

        const uint GENERIC_READ        = 0x80000000;

        public static void Main(string[] args) {

            IntPtr hFile = CreateFile(@"C:\text.txt", GENERIC_READ | GENERIC_WRITE, 0, IntPtr.Zero, CREATE_ALWAYS, (uint) System.IO.FileAttributes.Normal, IntPtr.Zero);

            if ( hFile != IntPtr.Zero ) {

                Console.WriteLine("C 드라이브 밑에 test.txt 파일이 생성되었습니다.");

                Console.WriteLine("File.Exists 실행 결과: {0}", System.IO.File.Exists(@"C:\test.txt"));

                CloseHandle(hFile);

            } else Console.WriteLine("파일을 만들지 못했습니다.");

            Console.ReadKey(true);

        }

    }

}