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FAQ

BinaryReader

,
ReadBoolean Boolean
ReadByte 1
ReadBytes
ReadChar
ReadChars
ReadDecimal 16
ReadSingle 4
ReadDouble 8
ReadSByte 1
ReadIntl6 2
ReadInt32 4
ReadInt64 8
ReadUIntl6 2
ReadUInt32 4
ReadUInt64 8
ReadString

Binary FileStream, BinaryWriter BinaryReader.

using System;

using System.IO;

 

namespace Binary

{

class Program

{

static string testFile = "mydata.dat";

 

static void Main(string[] args)

{

if(File.Exists(testFile))

{

Console.WriteLine(" {0} ", testFile);

Console.ReadLine();

return;

}

 

FileStream fs = new FileStream(testFile, FileMode.CreateNew);

BinaryWriter bw = new BinaryWriter(fs);

bw.Write("Text string");

for(uint i = 0; i < 20; i++)

{

bw.Write(i);

}

bw.Close();

fs.Close();

 

fs = new FileStream(testFile, FileMode.Open, FileAccess.Read);

BinaryReader br = new BinaryReader(fs);

string s = br.ReadString();

Console.WriteLine(s);

for (uint i = 0; i < 20; i++)

{

Console.Write("{0} ", br.ReadUInt32());

}

 

br.Close();

fs.Close();

Console.WriteLine("\n ");

Console.ReadLine();

}

}

}

mydata. dat, Exists File:

if(File.Exists(testFile))

{

Console.WriteLine(" {0} ", testFile);

Console.ReadLine();

return;

}

File, , . , mydata. dat , . (, ), .

mydata. dat, , FileStream :

FileStream fs = new FileStream(testFile, FileMode.CreateNew);

FileMode. CreateNew, , .

FileStream, , bw BinaryWriter, :

BinaryWriter bw = new BinaryWriter(fs);

:

bw.Write("Text string");

bw 20 uint:

for(uint i = 0; i < 20; i++)

{

bw.Write(i);

}

Close:

bw.Close();

fs.Close();

.

fs FileStream, , :

fs = new FileStream(testFile, FileMode.Open, FileAccess.Read);

FileAccess. Read. fs br Binary. Reader:

Binary.Reader br = new BinaryReader(fs);

. , :

string s = br.ReadString();

Console.WriteLine(s);

20 :

for (uint i = 0; i < 20; i++)

{

Console.Write("{0} ", br.ReadUInt32());

}

, :

br.Close();

fs.Close();

, Enter, :

Console.WriteLine{"\n ");

Console.ReadLine();

:

, , . Total Commander, , .

. :

, 00, ASCII. . 20 , 4 .

Microsoft. NET Framework Directory. , , , , , .

, , Directory. GetLogicalDrives:

string[ ] drives = Directory.GetLogicalDrives();

foreach(string s in drives)Console.Write("{0} ", s);

. :\ .

Directory. GetCurrentDirectory :

string currentDir = Directory.GetCurrentDirectory();

Console.WriteLine{"\ : {0}", currentDir);

string.

, . Directory. GetDirectoryRoot, :

string directoryRoot = Directory.GetDirectoryRoot(currentDir);

Console.WriteLine(" : {0}",directoryRoot);

Directory. GetFileSystemEntries:

string[] drive_c_Dirs = Directory.GetFileSystemEntries(":\\");

foreach(string s in drive_c_Dirs)Console.WriteLine("{0}", s);

. string, , .

, , Directory. GetFileSystemEntries, .

using System;

using System.IO;

 

namespace Drivelnfo

{

class Program

{

static void Main(string[] args)

{

Console.WriteLine(" : ");

string[] drives = Directory.GetLogicalDrives();

foreach(string s in drives)

Console.Write("{0} ", s);

 

string currentDir = Directory.GetCurrentDirectory();

Console.WriteLine("\n : {0}", currentDir);

 

string directoryRoot = Directory.GetDirectoryRoot(currentDir);

Console.WriteLine(" : {0}",

directoryRoot);

 

Console.WriteLine(" : ");

string[] drive_c_Dirs = Directory.GetFileSystemEntries("c:\\");

foreach(string s in drive_c_Dirs)

Console.WriteLine("{0} ", s);

 

Console.ReadLine();

}

}

}

, , , , :. , :

, Directory. CreateDirectory:

string dirName = "temp\\dir";

Directory.CreateDirectory(dirName);

Console.WriteLine(" {0} ", dirName);

. , . temp, dir.

, Directory. Delete. . . .

:

Directory.Delete(dirName, true);

Console.WriteLine(" {0} ", dirName);

Directory. Delete . true, . , false, .

Directory . , Directory. GetCreationTime :

DateTime dt = Directory.GetCreationTime(dirName);

Console.Write(" : {0}-{1}-{2} {3}:{4}:{5} ",

dt.Day, dt.Month, dt.Year, dt.Hour, dt.Minute, dt.Second);

DateTime. , , , , , , , .

GetLastAccess GetLastWrite Directory , .

Directory. GetParent :

DirectoryInfo di = Directory.GetParent(dirName);

Console.WriteLine("\n {0}:", di.Parent);

Directory. GetParent DirectoryInfo. , , , , , . .

, .

using System;

using System.IO;

 

namespace Dirlnfo

{

class Program

{

static void Main(string[] args)

{

string dirName = "temp\\dir";

Directory.CreateDirectory(dirName);

Console.WriteLine(" {0} ", dirName);

 

DateTime dt = Directory.GetCreationTime(dirName);

Console.Write(" : " +

"{0}-{1}-{2} {3}:{4}:{5}",

dt.Day, dt.Month, dt.Year,

dt.Hour, dt.Minute, dt.Second);

 

DirectoryInfo di = Directory.GetParent(dirName);

Console.WriteLine("\n {0}:", di.Parent);

 

Directory.Delete (dirName, true);

Console.WriteLine(" {0} ", dirName);

Console.ReadLine();

}

}

}

:

, , . , , , , . .

Directory, File.

Exists . , true, false.

, .

File. Exists:

string testFile = "temp.txt";

if(File.Exists(testFile))

{

Console.WriteLine(" {0} ", testFile);

return;

}

, . testFile , return, .

File , . CreateText StreamWriter:

string testFile = "temp.txt";

StreamWriter sw = File.CreateText(testFile);

Create FileStream. .

Delete, :

string testFile = "temp.txt";

File.Delete(testFile);

Console.WriteLine(" {0} ", testFile);

, . File. Exists.

, File. GetCreationTime, :

string testFile = "temp.txt";

DateTime dt = File.GetCreationTime(testFile);

Console.Write(" : {0}-{1}-{2} {3}:{4}:{5}",

dt.Day, dt.Month, dt.Year, dt.Hour, dt.Minute, dt.Second);

DateTime, Directory.

File GetLastAccessTime GetLastWriteTime. , - . DateTime:

string testFile = "temp.txt";

DateTime dt = File.GetCreationTime(testFile);

Console.Write(" : {0}-{1}-{2} {3}:{4}:{5}",

dt.Day, dt.Month, dt.Year, dt.Hour, dt.Minute, dt.Second);

File , FileAttributes. , :

Console.Write("\n : ");

FileAttributes fa = File.GetAttributes(testFile);

Console.WriteLine(fa);

. FileAttributes. .

Archive . ,
Compressed
Device
Directory
Encrypted
Hidden
Normal
NotContentIndexed ( )
Offline offline
Readonly
ReparsePoint
SparseFile ,
System
Temporary

, File.

using System;

using System.IO;

 

namespace Filelnfo

{

class Program

{

static void Main(string[] args)

{

string testFile = "temp.txt";

if (File.Exists(testFile))

{

Console.WriteLine(

" {0} , ...", testFile);

}

StreamWriter sw = File.CreateText(testFile);

sw.WriteLine(" ");

sw.Close();

 

DateTime dt = File.GetCreationTime(testFile);

Console.Write(" : " +

"{0}-{1}-{2} {3}:{4}:{5}",

dt.Day, dt.Month, dt.Year, dt.Hour, dt.Minute, dt.Second);

 

Console.Write("\n : ");

FileAttributes fa = File.GetAttributes(testFile);

Console.WriteLine(fa);

 

File.Delete(testFile);

Console.WriteLine(" {0} ", testFile);

Console.ReadLine();

}

}

}

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