BinaryReader 클래스
기본 데이터 형식을 특정 인코딩의 이진 값으로 읽습니다.
네임스페이스: System.IO
어셈블리: mscorlib(mscorlib.dll)
구문
‘선언
<ComVisibleAttribute(True)> _
Public Class BinaryReader
Implements IDisposable
‘사용 방법
Dim instance As BinaryReader
[ComVisibleAttribute(true)]
public class BinaryReader : IDisposable
[ComVisibleAttribute(true)]
public ref class BinaryReader : IDisposable
/** @attribute ComVisibleAttribute(true) */
public class BinaryReader implements IDisposable
ComVisibleAttribute(true)
public class BinaryReader implements IDisposable
설명
다음 표에서는 일반적인 예 또는 관련된 I/O 작업의 예를 보여 줍니다.
수행 작업 |
참조 항목 |
|---|---|
텍스트 파일을 만듭니다. |
|
텍스트 파일에 씁니다. |
|
텍스트 파일에서 읽습니다. |
|
이진 파일에서 읽습니다. |
|
이진 파일에 씁니다. |
예제
다음 코드 예제에서는 응용 프로그램 설정을 파일에 저장하고 검색하는 방법을 보여 줍니다.
Imports Microsoft.VisualBasic
Imports System
Imports System.IO
Imports System.Security.Permissions
Public Class Test
Shared Sub Main()
' Load application settings.
Dim appSettings As New AppSettings()
Console.WriteLine("App settings." & vbcrLf & "Aspect " & _
"Ratio: {0}, Lookup directory: {1}," & vbcrLf & "Auto " & _
"save time: {2} minutes, Show status bar: {3}" & vbCrLf, _
New Object(3){appSettings.AspectRatio.ToString(), _
appSettings.LookupDir, _
appSettings.AutoSaveTime.ToString(), _
appSettings.ShowStatusBar.ToString()})
' Change the settings.
appSettings.AspectRatio = 1.250
appSettings.LookupDir = "C:\Temp"
appSettings.AutoSaveTime = 10
appSettings.ShowStatusBar = True
' Save the new settings.
appSettings.Close()
End Sub
End Class
' Store and retrieve application settings.
Public Class AppSettings
Const fileName As String = "AppSettings#@@#.dat"
Dim aspRatio As Single
Dim lkupDir As String
Dim saveTime As Integer
Dim statusBar As Boolean
Property AspectRatio As Single
Get
Return aspRatio
End Get
Set
aspRatio = Value
End Set
End Property
Property LookupDir As String
Get
Return lkupDir
End Get
Set
lkupDir = Value
End Set
End Property
Property AutoSaveTime As Integer
Get
Return saveTime
End Get
Set
saveTime = Value
End Set
End Property
Property ShowStatusBar As Boolean
Get
Return statusBar
End Get
Set
statusBar = Value
End Set
End Property
Sub New()
' Create default application settings.
aspRatio = 1.3333
lkupDir = "C:\AppDirectory"
saveTime = 30
statusBar = False
If File.Exists(fileName) Then
Dim binReader As New BinaryReader( _
File.Open(fileName, FileMode.Open))
Try
' If the file is not empty,
' read the application settings.
If binReader.PeekChar() <> -1 Then
aspRatio = binReader.ReadSingle()
lkupDir = binReader.ReadString()
saveTime = binReader.ReadInt32()
statusBar = binReader.ReadBoolean()
Return
End If
' If the end of the stream is reached before reading
' the four data values, ignore the error and use the
' default settings for the remaining values.
Catch ex As EndOfStreamException
Console.WriteLine("{0} caught and ignored. " & _
"Using default values.", ex.GetType().Name)
Finally
binReader.Close()
End Try
End If
End Sub
' Create a file and store the application settings.
Sub Close()
Dim binWriter As New BinaryWriter( _
File.Open(fileName, FileMode.Create))
Try
binWriter.Write(aspRatio)
binWriter.Write(lkupDir)
binWriter.Write(saveTime)
binWriter.Write(statusBar)
Finally
binWriter.Close()
End Try
End Sub
End Class
using System;
using System.IO;
using System.Security.Permissions;
class Test
{
static void Main()
{
// Load application settings.
AppSettings appSettings = new AppSettings();
Console.WriteLine("App settings.\nAspect Ratio: {0}, " +
"Lookup directory: {1},\nAuto save time: {2} minutes, " +
"Show status bar: {3}\n",
new Object[4]{appSettings.AspectRatio.ToString(),
appSettings.LookupDir, appSettings.AutoSaveTime.ToString(),
appSettings.ShowStatusBar.ToString()});
// Change the settings.
appSettings.AspectRatio = 1.250F;
appSettings.LookupDir = @"C:\Temp";
appSettings.AutoSaveTime = 10;
appSettings.ShowStatusBar = true;
// Save the new settings.
appSettings.Close();
}
}
// Store and retrieve application settings.
class AppSettings
{
const string fileName = "AppSettings#@@#.dat";
float aspectRatio;
string lookupDir;
int autoSaveTime;
bool showStatusBar;
public float AspectRatio
{
get{ return aspectRatio; }
set{ aspectRatio = value; }
}
public string LookupDir
{
get{ return lookupDir; }
set{ lookupDir = value; }
}
public int AutoSaveTime
{
get{ return autoSaveTime; }
set{ autoSaveTime = value; }
}
public bool ShowStatusBar
{
get{ return showStatusBar; }
set{ showStatusBar = value; }
}
public AppSettings()
{
// Create default application settings.
aspectRatio = 1.3333F;
lookupDir = @"C:\AppDirectory";
autoSaveTime = 30;
showStatusBar = false;
if(File.Exists(fileName))
{
BinaryReader binReader =
new BinaryReader(File.Open(fileName, FileMode.Open));
try
{
// If the file is not empty,
// read the application settings.
if(binReader.PeekChar() != -1)
{
aspectRatio = binReader.ReadSingle();
lookupDir = binReader.ReadString();
autoSaveTime = binReader.ReadInt32();
showStatusBar = binReader.ReadBoolean();
}
}
// If the end of the stream is reached before reading
// the four data values, ignore the error and use the
// default settings for the remaining values.
catch(EndOfStreamException e)
{
Console.WriteLine("{0} caught and ignored. " +
"Using default values.", e.GetType().Name);
}
finally
{
binReader.Close();
}
}
}
// Create a file and store the application settings.
public void Close()
{
using(BinaryWriter binWriter =
new BinaryWriter(File.Open(fileName, FileMode.Create)))
{
binWriter.Write(aspectRatio);
binWriter.Write(lookupDir);
binWriter.Write(autoSaveTime);
binWriter.Write(showStatusBar);
}
}
}
using namespace System;
using namespace System::IO;
using namespace System::Security::Permissions;
// Store and retrieve application settings.
ref class AppSettings
{
private:
static String^ fileName = "AppSettings#@@#.dat";
float aspectRatio;
String^ lookupDir;
int autoSaveTime;
Boolean showStatusBar;
public:
property float AspectRatio
{
float get()
{
return aspectRatio;
}
void set( float value )
{
aspectRatio = value;
}
}
property String^ LookupDir
{
String^ get()
{
return lookupDir;
}
void set( String^ value )
{
lookupDir = value;
}
}
property int AutoSaveTime
{
int get()
{
return autoSaveTime;
}
void set( int value )
{
autoSaveTime = value;
}
}
property Boolean ShowStatusBar
{
Boolean get()
{
return showStatusBar;
}
void set( Boolean value )
{
showStatusBar = value;
}
}
AppSettings()
{
// Create default application settings.
aspectRatio = 1.3333F;
lookupDir = "C:\\AppDirectory";
autoSaveTime = 30;
showStatusBar = false;
if ( File::Exists( fileName ) )
{
BinaryReader^ binReader = gcnew BinaryReader( File::Open( fileName, FileMode::Open ) );
try
{
// If the file is not empty,
// read the application settings.
if ( binReader->PeekChar() != -1 )
{
aspectRatio = binReader->ReadSingle();
lookupDir = binReader->ReadString();
autoSaveTime = binReader->ReadInt32();
showStatusBar = binReader->ReadBoolean();
return;
}
}
// If the end of the stream is reached before reading
// the four data values, ignore the error and use the
// default settings for the remaining values.
catch ( EndOfStreamException^ e )
{
Console::WriteLine( "{0} caught and ignored. "
"Using default values.", e->GetType()->Name );
}
finally
{
binReader->Close();
}
}
}
// Create a file and store the application settings.
void Close()
{
BinaryWriter^ binWriter = gcnew BinaryWriter( File::Open( fileName, FileMode::Create ) );
try
{
binWriter->Write( aspectRatio );
binWriter->Write( lookupDir );
binWriter->Write( autoSaveTime );
binWriter->Write( showStatusBar );
}
finally
{
binWriter->Close();
}
}
};
int main()
{
// Load application settings.
AppSettings^ appSettings = gcnew AppSettings;
array<Object^>^someObject = {appSettings->AspectRatio.ToString(),appSettings->LookupDir,appSettings->AutoSaveTime.ToString(),appSettings->ShowStatusBar.ToString()};
Console::WriteLine( "App settings.\nAspect Ratio: {0}, "
"Lookup directory: {1},\nAuto save time: {2} minutes, "
"Show status bar: {3}\n", someObject );
// Change the settings.
appSettings->AspectRatio = 1.250F;
appSettings->LookupDir = "C:\\Temp";
appSettings->AutoSaveTime = 10;
appSettings->ShowStatusBar = true;
// Save the new settings.
appSettings->Close();
}
import System.*;
import System.IO.*;
import System.Security.Permissions.*;
class Test
{
public static void main(String[] args)
{
// Load application settings.
AppSettings appSettings = new AppSettings();
Console.WriteLine("App settings.\nAspect Ratio: {0}, "
+ "Lookup directory: {1},\nAuto save time: {2} minutes, "
+ "Show status bar: {3}\n",
new Object[]{System.Convert.ToString(appSettings.get_AspectRatio()),
appSettings.get_LookupDir(),
System.Convert.ToString(appSettings.get_AutoSaveTime()),
System.Convert.ToString(appSettings.get_ShowStatusBar())});
// Change the settings.
appSettings.set_AspectRatio(1.25F);
appSettings.set_LookupDir("C:\\Temp");
appSettings.set_AutoSaveTime ( 10);
appSettings.set_ShowStatusBar( true);
// Save the new settings.
appSettings.Close();
} //main
} //Test
// Store and retrieve application settings.
class AppSettings
{
private String fileName = "AppSettings#@@#.dat";
private float aspectRatio;
private String lookupDir;
private int autoSaveTime;
private boolean showStatusBar;
/** @property
*/
public float get_AspectRatio()
{
return aspectRatio ;
}//get_AspectRatio
/** @property
*/
public void set_AspectRatio ( float value )
{
aspectRatio = value;
}//set_AspectRatio
/** @property
*/
public String get_LookupDir()
{
return lookupDir ;
}//get_LookupDir
/** @property
*/
public void set_LookupDir ( String value )
{
lookupDir = value;
}//set_LookupDir
/** @property
*/
public int get_AutoSaveTime()
{
return autoSaveTime ;
}//get_AutoSaveTime
/** @property
*/
public void set_AutoSaveTime ( int value )
{
autoSaveTime = value;
}//set_AutoSaveTime
/** @property
*/
public boolean get_ShowStatusBar()
{
return showStatusBar ;
}//get_ShowStatusBar
/** @property
*/
public void set_ShowStatusBar ( boolean value )
{
showStatusBar = value;
}//set_ShowStatusBar
public AppSettings()
{
// Create default application settings.
aspectRatio = 1.3333F;
lookupDir = "C:\\AppDirectory";
autoSaveTime = 30;
showStatusBar = false;
if ( File.Exists(fileName) ) {
BinaryReader binReader =
new BinaryReader(File.Open(fileName, FileMode.Open));
try {
// If the file is not empty,
// read the application settings.
if ( binReader.PeekChar() !=-1 ) {
aspectRatio = binReader.ReadSingle();
lookupDir = binReader.ReadString();
autoSaveTime = binReader.ReadInt32();
showStatusBar = binReader.ReadBoolean();
}
}
// If the end of the stream is reached before reading
// the four data values, ignore the error and use the
// default settings for the remaining values.
catch(EndOfStreamException e) {
Console.WriteLine("{0} caught and ignored. "
+ "Using default values.", e.GetType().get_Name());
}
finally {
binReader.Close();
}
}
} //AppSettings
// Create a file and store the application settings.
public void Close()
{
BinaryWriter binWriter =
new BinaryWriter(File.Open(fileName, FileMode.Create));
try {
binWriter.Write(aspectRatio);
binWriter.Write(lookupDir);
binWriter.Write(autoSaveTime);
binWriter.Write(showStatusBar);
}
finally {
if ( binWriter != null ) {
binWriter= null;
}
}
} //Close
} //AppSettings
상속 계층 구조
System.Object
System.IO.BinaryReader
스레드로부터의 안전성
이 형식의 모든 public static(Visual Basic의 경우 Shared) 멤버는 스레드로부터 안전합니다. 인터페이스 멤버는 스레드로부터 안전하지 않습니다.
플랫폼
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
.NET Framework에서 모든 플래폼의 모든 버전을 지원하지는 않습니다. 지원되는 버전의 목록은 시스템 요구 사항을 참조하십시오.
버전 정보
.NET Framework
2.0, 1.1, 1.0에서 지원
.NET Compact Framework
2.0, 1.0에서 지원
참고 항목
참조
BinaryReader 멤버
System.IO 네임스페이스
기타 리소스
파일 및 스트림 I/O
방법: 파일의 텍스트 읽기
방법: 파일에 텍스트 쓰기
기본 파일 I/O
방법: 새로 만든 데이터 파일 읽기 및 쓰기