查找特定文件路径下指定文件类型的文件

代码
  1using System;
  2using System.IO;
  3using System.Runtime.Remoting.Messaging;
  4using System.Collections.Specialized;
  5
  6public class FindFiles
  7{
  8    delegate string[] GetFilesHandler(
  9         string searchPattern, bool recurseSubdirectories);
 10
 11    public static void Main(string[] args)
 12    {
 13        bool recurseSubdirectories = true;
 14        IAsyncResult[] result = new IAsyncResult[args.Length];
 15        int count = 0;
 16
 17        foreach (string arg in args)
 18        {
 19            if (arg.Trim().ToUpper() == "/S")
 20            {
 21                recurseSubdirectories = true;
 22                break;
 23            }
 24        }
 25
 26        GetFilesHandler asyncGetFilesHandler = GetFiles;
 27
 28        Console.WriteLine("Searching: {0}",
 29            string.Join(", ", args));
 30        if (recurseSubdirectories)
 31        {
 32            Console.WriteLine("\trecursive");
 33        }
 34        Console.WriteLine("Push ENTER to cancel/exit");
 35
 36        foreach (string arg in args)
 37        {
 38            if (arg.Trim().ToUpper() != "/S")
 39            {
 40                result[count] = asyncGetFilesHandler.BeginInvoke(
 41                    arg, recurseSubdirectories,
 42                    SearchCompleted, arg);
 43            }
 44            count++;
 45        }
 46        Console.ReadLine();
 47    }
 48
 49    public static string[] GetFiles(
 50       string searchPattern, bool recurseSubdirectories)
 51    {
 52        string[] results = null;
 53
 54        // Search for files matching the pattern.
 55        StringCollection files = new StringCollection();
 56        string directory;
 57        directory = Path.GetDirectoryName(searchPattern);
 58        if ((directory == null) || (directory.Trim().Length == 0))
 59        {
 60
 61            directory = Directory.GetCurrentDirectory();
 62        }
 63
 64        files.AddRange(GetFiles(searchPattern));
 65
 66        if (recurseSubdirectories)
 67        {
 68            foreach (string subDirectory in
 69                 Directory.GetDirectories(directory))
 70            {
 71                files.AddRange(GetFiles(
 72                    Path.Combine(
 73                        subDirectory,
 74                        Path.GetFileName(searchPattern)),
 75                    true));
 76            }
 77        }
 78
 79        results = new string[files.Count];
 80        files.CopyTo(results, 0);
 81
 82        return results;
 83    }
 84
 85    public static string[] GetFiles(string searchPattern)
 86    {
 87        string[] fileNames;
 88        string directory;
 89
 90        // Set directory , default to the current if the
 91        // is none specified in the searchPattern.
 92        directory = Path.GetDirectoryName(searchPattern);
 93        if ((directory == null) || (directory.Trim().Length == 0))
 94        {
 95            directory = Directory.GetCurrentDirectory();
 96        }
 97
 98        fileNames = Directory.GetFiles(
 99                Path.GetFullPath(directory),
100                Path.GetFileName(searchPattern));
101
102        return fileNames;
103    }
104
105    public static void SearchCompleted(IAsyncResult result)
106    {
107        string searchPattern = (string)result.AsyncState;
108        Console.WriteLine("{0}:", searchPattern);
109        AsyncResult asyncResult = (AsyncResult)result;
110        GetFilesHandler handler =
111                (GetFilesHandler)asyncResult.AsyncDelegate;
112        string[] files = handler.EndInvoke(result);
113        foreach (string file in files)
114        {
115            Console.WriteLine("\t" + Path.GetFileName(file));
116        }
117    }
118}