C#文件操作大全

1.创建文件夹

Directory.CreateDirectory(path);

2.创建文件

File.Create(path);

3.删除文件

File.Delete(path);

4.删除文件夹

Directory.Delete(path);

for (int i = 0; i < folders.Count; i++)

{

FileInfo f = folders[i] as FileInfo;

if (f == null)

{

DirectoryInfo d = folders[i] as DirectoryInfo;

d.Delete();

}

}

}

7.读取文件

StreamReader s = File.OpenText(path);

while ((%%2 = s.ReadLine()) != null){

}

8.写入文件

9.写入随机文件

byte[] dataArray = new byte[100000];//new Random().NextBytes(dataArray);

using(FileStream FileStream = new FileStream(path, FileMode.Create))

{

// Write the data to the file, byte by byte.

for(int i = 0; i < dataArray.Length; i++){

FileStream.WriteByte(dataArray[i]);

}

// Set the stream position to the beginning of the file.

FileStream.Seek(0, SeekOrigin.Begin);

// Read and verify the data.

for(int i = 0; i < FileStream.Length; i++){

//写入数据错误

return;

}

}

//"数据流"+FileStream.Name+"已验证"

}

10.读取文件属性

}

11.写入属性

FileInfo f = new FileInfo(path);

//设置只读

f.Attributes = myFile.Attributes | FileAttributes.ReadOnly;

//设置可写

f.Attributes = myFile.Attributes & ~FileAttributes.ReadOnly;

12.枚举一个文件夹中的所有文件夹

foreach (string %%2 in Directory.GetDirectories(path)){

}

foreach(FileInfo %%2 in files){%%3}*/

string parent = Path.GetDirectoryName(path);

Directory.CreateDirectory(path + Path.GetFileName(path));

DirectoryInfo dir = new DirectoryInfo((path.LastIndexOf("\\") == path.Length - 1) ? path : path + "\\");

FileSystemInfo[] fileArr = dir.GetFileSystemInfos();

Queue<FileSystemInfo> Folders = new Queue<FileSystemInfo>(dir.GetFileSystemInfos());

while (Folders.Count>0)

{

FileSystemInfo tmp = Folders.Dequeue();

FileInfo f = tmp as FileInfo;

if (f == null)

{

parent + "\\", path));

foreach (FileSystemInfo fi in d.GetFileSystemInfos())

{

Folders.Enqueue(fi);

}

}

14.复制目录下所有的文件夹到另一个文件夹下

/*

using System.IO;

using System.Collections;

*/

DirectoryInfo d = new DirectoryInfo(path);

{

while (al.Count > 0)

FileSystemInfo temp = al.Dequeue();

if (file == null)

else

File.Copy(file.FullName, path + file.Name);

}

}

/*

using System.IO;

using System.Collections;

*/

string filename = Path.GetFileName(path);

string path=(%%2.LastIndexOf("\\") == %%2.Length - 1) ? %%2 : %%2 + "\\";

else

{

string parent = Path.GetDirectoryName(path);

Directory.CreateDirectory(path + Path.GetFileName(path));

DirectoryInfo dir = new DirectoryInfo((path.LastIndexOf("\\") == path.Length - 1) ? path : path + "\\");

FileSystemInfo[] fileArr = dir.GetFileSystemInfos();

{

DirectoryInfo d = tmp as DirectoryInfo;

DirectoryInfo dpath = new DirectoryInfo(d.FullName.Replace((parent.LastIndexOf("\\") == parent.Length

- 1) ? parent : parent + "\\", path));

dpath.Create();

{

}

else

f.MoveTo(f.FullName.Replace(parent, path));

using System.IO;

using System.Collections;

*/

string filename = Path.GetFileName(path);

if (Path.GetPathRoot(path) == Path.GetPathRoot(%%2))

foreach (string dir in Directory.GetDirectories(path))

Directory.Move(dir, Path.Combine(%%2,filename));

else

{

foreach (string dir2 in Directory.GetDirectories(path))

{

string dir = (dir2.LastIndexOf("\\") == dir2.Length - 1) ? dir2 : dir2 + "\\";

DirectoryInfo dirdir = new DirectoryInfo(dir);

FileSystemInfo[] fileArr = dirdir.GetFileSystemInfos();

Queue<FileSystemInfo> Folders = new Queue<FileSystemInfo>(dirdir.GetFileSystemInfos());

while (Folders.Count > 0)

{

- 1) ? parent : parent + "\\", %%2));

dpath.Create();

foreach (FileSystemInfo fi in d.GetFileSystemInfos())

{

Folders.Enqueue(fi);