最终目标是使用某种形式的数据结构来存储要存储在txt文件中的目录的层级结构。
我正在使用以下代码，到目前为止，我正在努力将目录，子目录和文件组合在一起。
/// <summary>
/// code based on http://msdn.microsoft.com/en-us/library/bb513869.aspx
/// </summary>
/// <param name="strFolder"></param>
public static void TraverseTree ( string strFolder )
{
// Data structure to hold names of subfolders to be
// examined for files.
Stack<string> dirs = new Stack<string>( 20 );
if ( !System.IO.Directory.Exists( strFolder ) )
{
throw new ArgumentException();
}
dirs.Push( strFolder );
while ( dirs.Count > 0 )
{
string currentDir = dirs.Pop();
string[] subDirs;
try
{
subDirs = System.IO.Directory.GetDirectories( currentDir );
}
catch ( UnauthorizedAccessException e )
{
MessageBox.Show( "Error: " + e.Message );
continue;
}
catch ( System.IO.DirectoryNotFoundException e )
{
MessageBox.Show( "Error: " + e.Message );
continue;
}
string[] files = null;
try
{
files = System.IO.Directory.GetFiles( currentDir );
}
catch ( UnauthorizedAccessException e )
{
MessageBox.Show( "Error: " + e.Message );
continue;
}
catch ( System.IO.DirectoryNotFoundException e )
{
MessageBox.Show( "Error: " + e.Message );
continue;
}
// Perform the required action on each file here.
// Modify this block to perform your required task.
/*
foreach ( string file in files )
{
try
{
// Perform whatever action is required in your scenario.
System.IO.FileInfo fi = new System.IO.FileInfo( file );
Console.WriteLine( "{0}: {1}, {2}", fi.Name, fi.Length, fi.CreationTime );
}
catch ( System.IO.FileNotFoundException e )
{
// If file was deleted by a separate application
// or thread since the call to TraverseTree()
// then just continue.
MessageBox.Show( "Error: " + e.Message );
continue;
}
}
*/
// Push the subdirectories onto the stack for traversal.
// This could also be done before handing the files.
foreach ( string str in subDirs )
dirs.Push( str );
foreach ( string str in files )
MessageBox.Show( str );
}
答案 0 :(得分：8)
您可以使用某种Composite pattern复合项目 - 文件夹。
这是一个示例代码，用于构建目标文件夹的Tree结构。它以递归方式工作，并且消耗更多内存，但简单性值得。
class TreeItem
{
public string FolderName;
public List<TreeItem> SubFolders = new List<TreeItem>();
public string[] Files;
}
class Program
{
private static TreeItem FileTree(string rootFolder){
var item = new TreeItem();
item.FolderName = rootFolder;
item.Files = System.IO.Directory.GetFiles(rootFolder);
foreach(var folder in System.IO.Directory.GetDirectories(rootFolder))
{
item.SubFolders.Add(FileTree(folder));
}
return item;
}
//Traversal algorithm
private static void PrintComposite(TreeItem node, int ident)
{
var dirName = System.IO.Path.GetFileName(node.FolderName);
Console.WriteLine(@"{0}{1}", new string('-', ident), dirName);
foreach(var subNode in node.SubFolders)
{
PrintComposite(subNode, ident + 1);
}
}
public static void Main(string[] args)
{
var tree = FileTree(@"D:\Games");
PrintComposite(tree,0);
}
}
答案 1 :(得分：1)
首先，我认为你需要制作更多的物品。 DirectoryElementInterface接口或抽象类和DirectoryElement对象，以及实现DirectoryElementInterface的FileElement对象。现在，不是使用堆栈来遍历层次结构，而是创建DirectoryElementInterface root = new DirectoryElement(nameOfNode)。然后，为getFiles中的每个文件执行root.addElement(new FileElement(filename));之类的操作。 addElement应该添加到DirectoryElement中的List。对目录也是如此。好的，现在你可以创建一个级别。
现在进行迭代步骤。参加刚刚编写的例程，并将root作为参数。您可以调用它，但对于此讨论，我将调用此新例程addDirectoryInformation。你的主要是现在将创建根并调用在根中传递的addDirectoryInformation。为了迭代，我们需要向现在填充的根询问其元素列表，对列表执行foreach并为每个作为目录的元素调用addDirectoryInformation。完成后，将循环移动到addDirectoryInformation的末尾。现在，您添加的每个目录都会递归添加所有子项。
适当的递归程序还有一件事。您必须知道何时停止递归。在这种情况下，这很容易。如果列表中没有目录，则永远不会调用addDirectoryInformation。所以你已经完成了。
答案 2 :(得分：0)
我使用基于http://weblogs.asp.net/israelio/archive/2004/06/23/162913.aspx
的代码开始工作// How much deep to scan. (of course you can also pass it to the method)
const int HowDeepToScan=20;
public static void ProcessDir ( string dirName, int recursionLvl, string strFileName)
{
string tabs = new String( '-', recursionLvl );
if ( recursionLvl<=HowDeepToScan )
{
// Process the list of files found in the directory.
string [] fileEntries = Directory.GetFiles( dirName );
TextWriter tw = new StreamWriter( strFileName, true );
tw.WriteLine( tabs + "<a href=\" " + System.IO.Path.GetFullPath( dirName ) + "\">" + System.IO.Path.GetFileName( dirName ) + "</a><br />" );
foreach ( string fileName in fileEntries )
{
// do something with fileName
tw.WriteLine( tabs + "<a href=\" " + System.IO.Path.GetFullPath( fileName ) + "\">" + System.IO.Path.GetFileName( fileName ) + "</a><br />" );
}
tw.Close();
// Recurse into subdirectories of this directory.
string [] subdirEntries = Directory.GetDirectories( dirName );
foreach ( string subdir in subdirEntries )
// Do not iterate through reparse points
if ( ( File.GetAttributes( subdir ) &
FileAttributes.ReparsePoint ) !=
FileAttributes.ReparsePoint )
ProcessDir( subdir, recursionLvl+1, strFileName );
}
}
<强>输出
<a href=" C:\code">code</a><br />
<a href=" C:\code\group.zip">FluentPath (1).zip</a><br />
<a href=" C:\code\index.html">index.html</a><br />
答案 3 :(得分：0)
上周我做了一个类似的课程，输出是控制台，但没有理由你不能将它写入.txt文件。
使用System; 使用System.Collections.Generic; 使用System.Linq; 使用System.Text;
命名空间ShowDirectory { 课程 { static void Main（string [] args） { Console.WriteLine（“此程序列出目录中的所有文件。”）; System.IO.DirectoryInfo dir = new System.IO.DirectoryInfo（@“C：\”）; foreach（dir.GetFiles中的System.IO.FileInfo文件（“。”）） { Console.WriteLine（“{0}，{1}”，file.Name，file.Length）; } 到Console.ReadLine（）; } } }
答案 4 :(得分：0)
其中一种方法是在文件树上使用迭代器，如下所示：
// IncludeExcludeFileEnumerator(string baseDir, string includePattern, string excludePattern)
// Include pattern can include ** that means tree hierarchy
var myFiles = new IncludeExcludeFileEnumerable(@"C:\test\aaa", @"**.bmp,*.jpg", "*excl_bad*.*,*fu*");
foreach (var s in myFiles)
{
Console.Out.WriteLine(s);
}
文件迭代器的代码（IEnumerator，IEnumerable）：
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
namespace IncludeExcludeFileEnumerator
{
public class IncludeExcludeFileEnumerator : IEnumerator<String>
{
private string excludeRegExPattern;
private readonly Regex regexSeparateFilePath;
private readonly Regex excludeRegex = null;
private int currentPatternIndex;
private IEnumerator<string> filesEnum;
private IEnumerable<string> files;
bool isNext = true;
private readonly List<Tuple<string, string, SearchOption>> incPatternsList;
public IncludeExcludeFileEnumerator(string baseDirectory, string includePattern, string excludePattern)
{
// Split comma separated string to array of include patterns
var initIncludePatterns = includePattern.Split(',');
regexSeparateFilePath = new Regex(@"(.*)[\\/]([^\\/]*$)", RegexOptions.Compiled);
// Prepare include patterns
incPatternsList = initIncludePatterns.ToList().ConvertAll(
(incPattern) =>
{
incPattern = incPattern.Trim();
var matches = regexSeparateFilePath.Matches(incPattern);
string pathPattern;
string filePattern;
if (matches.Count == 0)
{
pathPattern = "";
filePattern = incPattern;
}
else
{
pathPattern = matches[0].Groups[1].Value;
filePattern = matches[0].Groups[2].Value;
}
SearchOption searchOption = SearchOption.TopDirectoryOnly;
if (filePattern.Contains("**"))
{
filePattern = filePattern.Replace("**", "*");
searchOption = SearchOption.AllDirectories;
}
var fullPathPattern = Path.Combine(baseDirectory, pathPattern);
// Returns tuple {PathPattern, FilePattern, SearchOption}
return new Tuple<string, string, SearchOption>(fullPathPattern, filePattern, searchOption);
});
// Prepare regular expression for exclude case (all in one, concatinated by (| - or) separator)
if (!String.IsNullOrWhiteSpace(excludePattern))
{
var excPatterns = excludePattern.Replace(".", @"\.");
excPatterns = excPatterns.Replace("*", ".*");
excludeRegExPattern = excPatterns.Replace(",", "|");
excludeRegex = new Regex(excludeRegExPattern, RegexOptions.Compiled);
}
Reset();
}
public string Current
{
get { return filesEnum.Current; }
}
public void Dispose()
{
}
object System.Collections.IEnumerator.Current
{
get { return (Object)this.Current; }
}
public bool MoveNext()
{
do
{
if (( filesEnum == null ) && (incPatternsList.Count < currentPatternIndex + 2))
{
return false;
}
if ((filesEnum == null) || (isNext == false))
{
var tuple = incPatternsList[++currentPatternIndex];
files = Directory.EnumerateFiles(tuple.Item1, tuple.Item2, tuple.Item3);
filesEnum = files.GetEnumerator();
isNext = true;
}
while (isNext)
{
isNext = filesEnum.MoveNext();
if (isNext)
{
if (excludeRegex==null) return true;
if (!excludeRegex.Match(filesEnum.Current).Success) return true;
// else continue;
}
else
{
filesEnum = null;
}
}
} while (true);
}
public void Reset()
{
currentPatternIndex = -1;
filesEnum = null;
}
}
public class IncludeExcludeFileEnumerable : IEnumerable<string>
{
private string baseDirectory;
private string includePattern;
private string excludePattern;
public IncludeExcludeFileEnumerable(string baseDirectory, string includePattern, string excludePattern)
{
this.baseDirectory = baseDirectory;
this.includePattern = includePattern;
this.excludePattern = excludePattern;
}
public IEnumerator<string> GetEnumerator()
{
return new IncludeExcludeFileEnumerator(baseDirectory, includePattern, excludePattern);
}
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
{
return (IEnumerator)this.GetEnumerator();
}
}
}