C#常用目录操作总结

在C#中，常用的目录操作类有Directory, DirectoryInfo，基本上两个类提供的方法大同小异，有不算太大的区别，但是Directory类是静态类，所有的函数都是静态函数，可以直接调用。

使用Directory可以创建指定的目录，删除目录，获取目录信息，例如创建时间等，获取目录中的子目录，获取目录中的文件集合等操作，还可以设置目录的访问时间等。

简单的一个目录操作的代码，判断目录是否存在，如果不存在则创建目录：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string path = @"C:\Users\watkins\Desktop\TcpListener\TcpListener\bin";
            bool a = Directory.Exists(path);
            if (!a)
            {
                Directory.CreateDirectory(path);
            }
            Console.WriteLine(a);
            Console.Read();
        }
    }
}

Directory类的成员列表：

Directory Members

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Exposes static methods for creating, moving, and enumerating through directories and subdirectories. This class cannot be inherited.

The Directory type exposes the following members.

Methods

	Name	Description
	CreateDirectory(String)	Creates all directories and subdirectories as specified by path.
	CreateDirectory(String, DirectorySecurity)	Creates all the directories in the specified path, applying the specified Windows security.
	Delete(String)	Deletes an empty directory from a specified path.
	Delete(String, Boolean)	Deletes the specified directory and, if indicated, any subdirectories and files in the directory.
	EnumerateDirectories(String)	Returns an enumerable collection of directory names in a specified path.
	EnumerateDirectories(String, String)	Returns an enumerable collection of directory names that match a search pattern in a specified path.
	EnumerateDirectories(String, String, SearchOption)	Returns an enumerable collection of directory names that match a search pattern in a specified path, and optionally searches subdirectories.
	EnumerateFiles(String)	Returns an enumerable collection of file names in a specified path.
	EnumerateFiles(String, String)	Returns an enumerable collection of file names that match a search pattern in a specified path.
	EnumerateFiles(String, String, SearchOption)	Returns an enumerable collection of file names that match a search pattern in a specified path, and optionally searches subdirectories.
	EnumerateFileSystemEntries(String)	Returns an enumerable collection of file-system entries in a specified path.
	EnumerateFileSystemEntries(String, String)	Returns an enumerable collection of file-system entries that match a search pattern in a specified path.
	EnumerateFileSystemEntries(String, String, SearchOption)	Returns an enumerable collection of file names and directory names that match a search pattern in a specified path, and optionally searches subdirectories.
	Exists	Determines whether the given path refers to an existing directory on disk.
	GetAccessControl(String)	Gets a DirectorySecurity object that encapsulates the access control list (ACL) entries for a specified directory.
	GetAccessControl(String, AccessControlSections)	Gets a DirectorySecurity object that encapsulates the specified type of access control list (ACL) entries for a specified directory.
	GetCreationTime	Gets the creation date and time of a directory.
	GetCreationTimeUtc	Gets the creation date and time, in Coordinated Universal Time (UTC) format, of a directory.
	GetCurrentDirectory	Gets the current working directory of the application.
	GetDirectories(String)	Gets the names of subdirectories in the specified directory.
	GetDirectories(String, String)	Gets an array of directories matching the specified search pattern from the current directory.
	GetDirectories(String, String, SearchOption)	Gets an array of directories matching the specified search pattern from the current directory, using a value to determine whether to search subdirectories.
	GetDirectoryRoot	Returns the volume information, root information, or both for the specified path.
	GetFiles(String)	Returns the names of files (including their paths) in the specified directory.
	GetFiles(String, String)	Returns the names of files (including their paths) that match the specified search pattern in the specified directory.
	GetFiles(String, String, SearchOption)	Returns the names of files (including their paths) that match the specified search pattern in the specified directory, using a value to determine whether to search subdirectories.
	GetFileSystemEntries(String)	Returns the names of all files and subdirectories in the specified directory.
	GetFileSystemEntries(String, String)	Returns an array of file system entries that match the specified search criteria.
	GetFileSystemEntries(String, String, SearchOption)	Gets an array of all the file names and directory names that match a search pattern in a specified path, and optionally searches subdirectories.
	GetLastAccessTime	Returns the date and time the specified file or directory was last accessed.
	GetLastAccessTimeUtc	Returns the date and time, in Coordinated Universal Time (UTC) format, that the specified file or directory was last accessed.
	GetLastWriteTime	Returns the date and time the specified file or directory was last written to.
	GetLastWriteTimeUtc	Returns the date and time, in Coordinated Universal Time (UTC) format, that the specified file or directory was last written to.
	GetLogicalDrives	Retrieves the names of the logical drives on this computer in the form "<drive letter>:\".
	GetParent	Retrieves the parent directory of the specified path, including both absolute and relative paths.
	Move	Moves a file or a directory and its contents to a new location.
	SetAccessControl	Applies access control list (ACL) entries described by a DirectorySecurity object to the specified directory.
	SetCreationTime	Sets the creation date and time for the specified file or directory.
	SetCreationTimeUtc	Sets the creation date and time, in Coordinated Universal Time (UTC) format, for the specified file or directory.
	SetCurrentDirectory	Sets the application's current working directory to the specified directory.
	SetLastAccessTime	Sets the date and time the specified file or directory was last accessed.
	SetLastAccessTimeUtc	Sets the date and time, in Coordinated Universal Time (UTC) format, that the specified file or directory was last accessed.
	SetLastWriteTime	Sets the date and time a directory was last written to.
	SetLastWriteTimeUtc	Sets the date and time, in Coordinated Universal Time (UTC) format, that a directory was last written to.

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