BinaryReader.BaseStream 属性
定义
公开对 BinaryReader 的基础流的访问。Exposes access to the underlying stream of the BinaryReader.
public:
virtual property System::IO::Stream ^ BaseStream { System::IO::Stream ^ get(); };
public virtual System.IO.Stream BaseStream { get; }
member this.BaseStream : System.IO.Stream
Public Overridable ReadOnly Property BaseStream As Stream
属性值
与 BinaryReader 关联的基础流。The underlying stream associated with the BinaryReader.
示例
下面的代码示例演示如何使用类的和类,在内存中读取和写入 Double 数据 BinaryReader BinaryWriter MemoryStream 。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 仅读取和写入 Byte 数据。MemoryStream only reads and writes Byte data.
using namespace System;
using namespace System::IO;
int main()
{
int i;
const int arrayLength = 1000;
// Create random data to write to the stream.
array<double>^dataArray = gcnew array<double>(arrayLength);
Random^ randomGenerator = gcnew Random;
for ( i = 0; i < arrayLength; i++ )
{
dataArray[ i ] = 100.1 * randomGenerator->NextDouble();
}
BinaryWriter^ binWriter = gcnew BinaryWriter( gcnew MemoryStream );
try
{
// Write data to the stream.
Console::WriteLine( "Writing data to the stream." );
i = 0;
for ( i = 0; i < arrayLength; i++ )
{
binWriter->Write( dataArray[ i ] );
}
// Create a reader using the stream from the writer.
BinaryReader^ binReader = gcnew BinaryReader( binWriter->BaseStream );
// Return to the beginning of the stream.
binReader->BaseStream->Position = 0;
try
{
// Read and verify the data.
i = 0;
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()->Name );
}
}
finally
{
binWriter->Close();
}
}
using System;
using System.IO;
class BinaryRW
{
static void Main()
{
int i;
const 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();
}
using(BinaryWriter binWriter =
new BinaryWriter(new MemoryStream()))
{
// 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.
using(BinaryReader binReader =
new BinaryReader(binWriter.BaseStream))
{
try
{
// Return to the beginning of the stream.
binReader.BaseStream.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().Name);
}
}
}
}
}
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
注解
注意
在读取或使用时使用基础流 BinaryReader 可能会导致数据丢失和损坏。Using the underlying stream while reading or while using the BinaryReader can cause data loss and corruption. 例如,可能会多次读取相同的字节,可能会跳过字节或字符读取。For example, the same bytes might be read more than once, bytes might be skipped, or character reading might become unpredictable.
有关常见 i/o 任务的列表,请参阅 常见 I/o 任务。For a list of common I/O tasks, see Common I/O Tasks.