Class CombinedReadonlyStream
Combine multiple streams into one, this stream is readonly
public class CombinedReadonlyStream : Stream, IAsyncDisposable, IDisposable- Inheritance
-
CombinedReadonlyStream
- Implements
- Inherited Members
- Extension Methods
Constructors
CombinedReadonlyStream(bool, params Stream[])
public CombinedReadonlyStream(bool closeStreams, params Stream[] args)Parameters
CombinedReadonlyStream(IEnumerable<Stream>, bool)
public CombinedReadonlyStream(IEnumerable<Stream> source, bool closeStreams = false)Parameters
sourceIEnumerable<Stream>closeStreamsbool
Properties
CanRead
When overridden in a derived class, gets a value indicating whether the current stream supports reading.
public override bool CanRead { get; }Property Value
CanSeek
When overridden in a derived class, gets a value indicating whether the current stream supports seeking.
public override bool CanSeek { get; }Property Value
CanTimeout
Gets a value that determines whether the current stream can time out.
public override bool CanTimeout { get; }Property Value
- bool
A value that determines whether the current stream can time out.
CanWrite
When overridden in a derived class, gets a value indicating whether the current stream supports writing.
public override bool CanWrite { get; }Property Value
Length
When overridden in a derived class, gets the length in bytes of the stream.
public override long Length { get; }Property Value
- long
A long value representing the length of the stream in bytes.
Exceptions
- NotSupportedException
A class derived from
Streamdoes not support seeking and the length is unknown.- ObjectDisposedException
Methods were called after the stream was closed.
Position
When overridden in a derived class, gets or sets the position within the current stream.
public override long Position { get; set; }Property Value
- long
The current position within the stream.
Exceptions
- IOException
An I/O error occurs.
- NotSupportedException
The stream does not support seeking.
- ObjectDisposedException
Methods were called after the stream was closed.
Methods
Dispose(bool)
Releases the unmanaged resources used by the Stream and optionally releases the managed resources.
protected override void Dispose(bool disposing)Parameters
disposingbooltrue to release both managed and unmanaged resources; false to release only unmanaged resources.
Flush()
When overridden in a derived class, clears all buffers for this stream and causes any buffered data to be written to the underlying device.
public override void Flush()Exceptions
- IOException
An I/O error occurs.
Read(byte[], int, int)
When overridden in a derived class, reads a sequence of bytes from the current stream and advances the position within the stream by the number of bytes read.
public override int Read(byte[] buffer, int offset, int count)Parameters
bufferbyte[]An array of bytes. When this method returns, the buffer contains the specified byte array with the values between
offsetand (offset+count- 1) replaced by the bytes read from the current source.offsetintThe zero-based byte offset in
bufferat which to begin storing the data read from the current stream.countintThe maximum number of bytes to be read from the current stream.
Returns
- int
The total number of bytes read into the buffer. This can be less than the number of bytes requested if that many bytes are not currently available, or zero (0) if
countis 0 or the end of the stream has been reached.
Exceptions
- ArgumentException
The sum of
offsetandcountis larger than the buffer length.- ArgumentNullException
bufferis null.- ArgumentOutOfRangeException
offsetorcountis negative.- IOException
An I/O error occurs.
- NotSupportedException
The stream does not support reading.
- ObjectDisposedException
Methods were called after the stream was closed.
ReadAsync(byte[], int, int, CancellationToken)
Asynchronously reads a sequence of bytes from the current stream, advances the position within the stream by the number of bytes read, and monitors cancellation requests.
public override Task<int> ReadAsync(byte[] buffer, int offset, int count, CancellationToken token)Parameters
bufferbyte[]The buffer to write the data into.
offsetintThe byte offset in
bufferat which to begin writing data from the stream.countintThe maximum number of bytes to read.
tokenCancellationToken
Returns
- Task<int>
A task that represents the asynchronous read operation. The value of the
TResultparameter contains the total number of bytes read into the buffer. The result value can be less than the number of bytes requested if the number of bytes currently available is less than the requested number, or it can be 0 (zero) ifcountis 0 or if the end of the stream has been reached.
Exceptions
- ArgumentNullException
bufferis null.- ArgumentOutOfRangeException
offsetorcountis negative.- ArgumentException
The sum of
offsetandcountis larger than the buffer length.- NotSupportedException
The stream does not support reading.
- ObjectDisposedException
The stream has been disposed.
- InvalidOperationException
The stream is currently in use by a previous read operation.
Seek(long, SeekOrigin)
When overridden in a derived class, sets the position within the current stream.
public override long Seek(long offset, SeekOrigin origin)Parameters
offsetlongA byte offset relative to the
originparameter.originSeekOriginA value of type SeekOrigin indicating the reference point used to obtain the new position.
Returns
- long
The new position within the current stream.
Exceptions
- IOException
An I/O error occurs.
- NotSupportedException
The stream does not support seeking, such as if the stream is constructed from a pipe or console output.
- ObjectDisposedException
Methods were called after the stream was closed.
SetLength(long)
When overridden in a derived class, sets the length of the current stream.
public override void SetLength(long value)Parameters
valuelongThe desired length of the current stream in bytes.
Exceptions
- IOException
An I/O error occurs.
- NotSupportedException
The stream does not support both writing and seeking, such as if the stream is constructed from a pipe or console output.
- ObjectDisposedException
Methods were called after the stream was closed.
Write(byte[], int, int)
When overridden in a derived class, writes a sequence of bytes to the current stream and advances the current position within this stream by the number of bytes written.
public override void Write(byte[] buffer, int offset, int count)Parameters
bufferbyte[]An array of bytes. This method copies
countbytes frombufferto the current stream.offsetintThe zero-based byte offset in
bufferat which to begin copying bytes to the current stream.countintThe number of bytes to be written to the current stream.
Exceptions
- ArgumentException
The sum of
offsetandcountis greater than the buffer length.- ArgumentNullException
bufferis null.- ArgumentOutOfRangeException
offsetorcountis negative.- IOException
An I/O error occurred, such as the specified file cannot be found.
- NotSupportedException
The stream does not support writing.
- ObjectDisposedException
Write(byte[], int, int) was called after the stream was closed.
WriteByte(byte)
Writes a byte to the current position in the stream and advances the position within the stream by one byte.
public override void WriteByte(byte value)Parameters
valuebyteThe byte to write to the stream.
Exceptions
- IOException
An I/O error occurs.
- NotSupportedException
The stream does not support writing, or the stream is already closed.
- ObjectDisposedException
Methods were called after the stream was closed.