BinaryReader Constructor (Stream)
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BinaryReader Constructor (Stream)

Initializes a new instance of the BinaryReader class based on the supplied stream and using UTF8Encoding.

Namespace: System.IO
Assembly: mscorlib (in mscorlib.dll)

'Declaration
Public Sub New ( _
	input As Stream _
)
'Usage
Dim input As Stream

Dim instance As New BinaryReader(input)
public BinaryReader (
	Stream input
)
public function BinaryReader (
	input : Stream
)

Parameters

input

A stream.

Exception typeCondition

ArgumentException

The stream does not support reading, the stream is a null reference (Nothing in Visual Basic), or the stream is already closed.

The following table lists examples of other typical or related I/O tasks.

To do this...

See the example in this topic...

Create a text file.

How to: Write Text to a File

Write to a text file.

How to: Write Text to a File

Read from a text file.

How to: Read Text from a File

Read from a binary file.

How to: Read and Write to a Newly Created Data File

Write to a binary file.

How to: Read and Write to a Newly Created Data File

This code example is part of a larger example provided for the BinaryReader class.

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

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();
}

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

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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