Export (0) Print
Expand All

BinaryReader.BaseStream Property

Exposes access to the underlying stream of the BinaryReader.

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

'Declaration
Public Overridable ReadOnly Property BaseStream As Stream
'Usage
Dim instance As BinaryReader
Dim value As Stream

value = instance.BaseStream

/** @property */
public Stream get_BaseStream ()

public function get BaseStream () : Stream

Not applicable.

Property Value

The underlying stream associated with the BinaryReader.

Caution noteCaution:

Using the underlying stream while reading or while using the BinaryReader can cause data loss and corruption. For example, the same bytes might be read more than once, bytes might be skipped, or character reading might become unpredictable.

For a list of common I/O tasks, see Common I/O Tasks.

The following code example shows how to read and write Double data to memory by using the BinaryReader and BinaryWriter classes on top of the MemoryStream class. MemoryStream only reads and writes Byte data.

Imports System
Imports System.IO

Public Class BinaryRW

    Shared Sub Main()
    
        Dim i As Integer
        Const upperBound As Integer = 1000

        ' Create random data to write to the stream.
        Dim dataArray(upperBound) As Double
        Dim randomGenerator As New Random()
        For i = 0 To upperBound
            dataArray(i) = 100.1 * randomGenerator.NextDouble()
        Next i

        Dim binWriter As New BinaryWriter(New MemoryStream())
        Try

            ' Write data to the stream.
            Console.WriteLine("Writing data to the stream.")
            
            For i = 0 To upperBound
                binWriter.Write(dataArray(i))
            Next i

            ' Create a reader using the stream from the writer.
            Dim binReader As New BinaryReader(binWriter.BaseStream)

            ' Return to the beginning of the stream.
            binReader.BaseStream.Position = 0

            ' Read and verify the data.
            Try
                Console.WriteLine("Verifying the written data.")
                For i = 0 To upperBound
                    If binReader.ReadDouble() <> dataArray(i) Then
                        Console.WriteLine("Error writing data.")
                        Exit For
                    End If
                Next i
                Console.WriteLine("The data was written and verified.")
            Catch ex As EndOfStreamException
                Console.WriteLine("Error writing data: {0}.", _
                    ex.GetType().Name)
            End Try
        Finally
            binWriter.Close()
        End Try

    End Sub
End Class

import System.*;
import System.IO.*;

class BinaryRW
{   
    public static void main(String[] args)
    {
        int i;
        final int arrayLength = 1000;

        // Create random data to write to the stream.
        Random randomGenerator = new Random();
        double dataArray[] = new double[arrayLength];
        for(i = 0;i < arrayLength;i++) {
            dataArray[i] = 100.1*randomGenerator.NextDouble() ;
        }
        BinaryWriter binWriter = new BinaryWriter(new MemoryStream());
        try {
            // Write the data to the stream.
            Console.WriteLine("Writing data to the stream.");
            for(i = 0;i < arrayLength;i++)    {
                binWriter.Write(dataArray [ i]);
            }
            // Create a reader using the stream from the writer.
            BinaryReader binReader = 
                new BinaryReader(binWriter.get_BaseStream());
            try {
                try {
                    // Return to the beginning of the stream.
                    binReader.get_BaseStream().set_Position(0);

                    // Read and verify the data.
                    Console.WriteLine("Verifying the written data.");
                    for(i = 0;i < arrayLength;i++) {
                        if ( binReader.ReadDouble() != dataArray[i] ) {
                            Console.WriteLine("Error writing data.");
                            break;
                        }
                    } 
                    Console.WriteLine(("The data was written "
                        + "and verified."));
                }
                catch(EndOfStreamException e) {
                    Console.WriteLine("Error writing data: {0}.",
                        e.GetType().get_Name());
                }
            }
            finally {
                if (binReader != null) {
                    binReader = null;
                }
            }
        }
        finally {
            if (binWriter != null) {
                binWriter = null;
            }
        }
    } //main
} //BinaryRW

Windows 98, Windows Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0

Community Additions

ADD
Show:
© 2014 Microsoft