using System;

using System.Runtime.InteropServices;

namespace ConsoleApplication1

{

    class Program

    {

        [DllImport("kernel32.dll")]

        public static extern uint DeleteFile(string fileName);

        [DllImport("kernel32.dll")]

        public static extern uint GetLastError();

        [DllImport("kernel32.dll")]

        public static extern uint FormatMessage(uint dwFlag, ref IntPtr source, uint messageId, uint languageId, ref string lpBuffer, uint size, ref IntPtr va_list);

        static void Main(string[] args)

        {

            string str = null;

            IntPtr tempptr = IntPtr.Zero;

            if (DeleteFile("C:\test.txt") != )

                Console.Write("删除成功！");

            else{

                FormatMessage(0x1300, ref tempptr, GetLastError(), , ref str, , ref tempptr);

                Console.Write("删除失败！\n失败原因：" + str);

            }

        }

    }

}