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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4. using System.Text;
  5. using System.Runtime.InteropServices;
  6. using System.IO;
  7.  
  8. namespace ConsoleApplication1
  9. {
  10.     class Program
  11.     {
  12.         static IntPtr INVALID_HANDLE_VALUE = new IntPtr(-1);
  13.  
  14.         static uint FILE_ATTRIBUTE_DIRECTORY = 0x00000010;
  15.  
  16.         [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
  17.         struct WIN32_FIND_DATA
  18.         {
  19.             public uint dwFileAttributes;
  20.             public System.Runtime.InteropServices.ComTypes.FILETIME ftCreationTime;
  21.             public System.Runtime.InteropServices.ComTypes.FILETIME ftLastAccessTime;
  22.             public System.Runtime.InteropServices.ComTypes.FILETIME ftLastWriteTime;
  23.             public uint nFileSizeHigh;
  24.             public uint nFileSizeLow;
  25.             public uint dwReserved0;
  26.             public uint dwReserved1;
  27.             [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
  28.             public string cFileName;
  29.             [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 14)]
  30.             public string cAlternateFileName;
  31.         }
  32.  
  33.         [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
  34.         static extern IntPtr FindFirstFile(string lpFileName, out WIN32_FIND_DATA lpFindFileData);
  35.  
  36.         [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
  37.         static extern bool FindNextFile(IntPtr hFindFile, out WIN32_FIND_DATA lpFindFileData);
  38.  
  39.         [DllImport("kernel32.dll")]
  40.         public static extern bool FindClose(IntPtr hFindFile);
  41.  
  42.         static void Main(string[] args)
  43.         {
  44.             foreach (var f in enumfiles("C:\\"))
  45.             {
  46.                 Console.WriteLine(f.cFileName);
  47.             }
  48.         }
  49.  
  50.         static IEnumerable<WIN32_FIND_DATA> enumfiles(string dirname)
  51.         {
  52.             var stack = new Stack<string>();
  53.             stack.Push(dirname);
  54.  
  55.             while (stack.Count > 0)
  56.             {
  57.                 var present = stack.Pop();
  58.  
  59.                 WIN32_FIND_DATA win32fd;
  60.                 IntPtr find = FindFirstFile(Path.Combine(present, "*"), out win32fd);
  61.                 if (find == INVALID_HANDLE_VALUE)
  62.                 {
  63.                     continue;
  64.                 }
  65.  
  66.                 do
  67.                 {
  68.                     if ((win32fd.cFileName == ".") || (win32fd.cFileName == ".."))
  69.                     {
  70.                         continue;
  71.                     }
  72.  
  73.                     win32fd.cFileName = Path.Combine(present, win32fd.cFileName);
  74.                     if ((win32fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == 0)
  75.                     {
  76.                         yield return win32fd;
  77.                     }
  78.                     else
  79.                     {
  80.                         stack.Push(win32fd.cFileName);
  81.                     }
  82.                 } while (FindNextFile(find, out win32fd));
  83.                 FindClose(find);
  84.             }
  85.         }
  86.     }
  87. }
  88.  
Runtime error #stdin #stdout #stderr 0.03s 38072KB
comments (?)
stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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Unhandled Exception: System.EntryPointNotFoundException: FindFirstFile
  at (wrapper managed-to-native) ConsoleApplication1.Program:FindFirstFile (string,ConsoleApplication1.Program/WIN32_FIND_DATA&)
  at ConsoleApplication1.Program+<enumfiles>c__Iterator0.MoveNext () [0x00000] in <filename unknown>:0 
  at ConsoleApplication1.Program.Main (System.String[] args) [0x00000] in <filename unknown>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.EntryPointNotFoundException: FindFirstFile
  at (wrapper managed-to-native) ConsoleApplication1.Program:FindFirstFile (string,ConsoleApplication1.Program/WIN32_FIND_DATA&)
  at ConsoleApplication1.Program+<enumfiles>c__Iterator0.MoveNext () [0x00000] in <filename unknown>:0 
  at ConsoleApplication1.Program.Main (System.String[] args) [0x00000] in <filename unknown>:0
https://ideone.com/opyS8O
language:
C# (gmcs 5.20.1)
created:
11 years ago
visibility:
public

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