C#Directory类文件夹基本操作大全

1、判断文件夹是否存在

//Directory类的Exists方法

bool a1 = Directory.Exists("C:\\Program Files");

Console.WriteLine(a1);

//DirectoryInfo类的Exists属性

DirectoryInfo a2 = new DirectoryInfo("C:\\Program Files");

if(a2.Exists)

{

Console.WriteLine("此文件夹存在");

}

else

{

Console.WriteLine("此文件夹不存在");

}

2、创建文件夹

//Directory类的CreateDirectory方法

Directory.CreateDirectory("d:\\新建文件夹");

//DirectoryInfo类的Create方法

DirectoryInfo x1 = new DirectoryInfo("d:\\新建文件夹");

x1.Create();

3、移动文件夹

//Directory类的Move方法

Directory.Move("c:\\新建文件夹（1）", "c:\\新建文件夹（2）");

//DirectoryInfo类的MoveTo方法

DirectoryInfo x1 = new DirectoryInfo("c:\\新建文件夹（1）");

x1.MoveTo("c:\\新建文件夹（2）");

4、删除文件夹

//Directory类的Delete方法

Directory.Delete("d:\\新建文件夹");

//DirectoryInfo类的Delete方法

DirectoryInfo x1 = new DirectoryInfo("d:\\新建文件夹");

x1.Delete();

5、遍历文件夹

// 引用一个目录。

DirectoryInfo di = new DirectoryInfo("d:\\");

DirectoryInfo\[\] diArr = di.GetDirectories();

// 显示目录的名称。

foreach (DirectoryInfo dri in diArr)

Console.WriteLine(dri.Name);

6、条件遍历文件夹

string path = @"d:\";

string searchPattern = "d*";

DirectoryInfo di = new DirectoryInfo(path);

DirectoryInfo\[\] directories =di.GetDirectories(searchPattern, SearchOption.TopDirectoryOnly);

FileInfo\[\] files =di.GetFiles(searchPattern, SearchOption.TopDirectoryOnly);

Console.WriteLine("在{0}目录中，以字母\"d\"开头的文件有：", path);

foreach (DirectoryInfo dir in directories)

{

Console.WriteLine("{0,-25} {1,25}", dir.FullName, dir.LastWriteTime);

}

Console.WriteLine();

Console.WriteLine("在{0}目录中，以字母\"d\" 开头的文件: ", path);

foreach (FileInfo file in files)

{

Console.WriteLine("{0,-25} {1,25}", file.Name, file.LastWriteTime);

}