Class NoFlushStream

Type	Condition
NotSupportedException	A class derived from `Stream` does 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.

Declaration

{{< /rawhtml >}} ```C# public override long Position { get; set; } ``` {{< rawhtml >}}

Property Value

Type	Description
long	The current position within the stream.

Overrides

Stream.Position

Exceptions

Type	Condition
IOException	An I/O error occurs.
NotSupportedException	The stream does not support seeking.
ObjectDisposedException	Methods were called after the stream was closed.

ReadTimeout

Gets or sets a value, in milliseconds, that determines how long the stream will attempt to read before timing out.

Declaration

{{< /rawhtml >}} ```C# public override int ReadTimeout { get; set; } ``` {{< rawhtml >}}

Property Value

Type	Description
int	A value, in milliseconds, that determines how long the stream will attempt to read before timing out.

Overrides

Stream.ReadTimeout

Exceptions

Type	Condition
InvalidOperationException	The ReadTimeout method always throws an InvalidOperationException.

WriteTimeout

Gets or sets a value, in milliseconds, that determines how long the stream will attempt to write before timing out.

Declaration

{{< /rawhtml >}} ```C# public override int WriteTimeout { get; set; } ``` {{< rawhtml >}}

Property Value

Type	Description
int	A value, in milliseconds, that determines how long the stream will attempt to write before timing out.

Overrides

Stream.WriteTimeout

Exceptions

Type	Condition
InvalidOperationException	The WriteTimeout method always throws an InvalidOperationException.

Methods

BeginRead(byte[], int, int, AsyncCallback, object)

Begins an asynchronous read operation. (Consider using ReadAsync(byte[], int, int) instead.)

Declaration

{{< /rawhtml >}} ```C# public override IAsyncResult BeginRead(byte[] buffer, int offset, int count, AsyncCallback callback, object state) ``` {{< rawhtml >}}

Parameters

Type	Name	Description
byte[]	buffer	The buffer to read the data into.
int	offset	The byte offset in `buffer` at which to begin writing data read from the stream.
int	count	The maximum number of bytes to read.
AsyncCallback	callback	An optional asynchronous callback, to be called when the read is complete.
object	state	A user-provided object that distinguishes this particular asynchronous read request from other requests.

Returns

Type	Description
IAsyncResult	An IAsyncResult that represents the asynchronous read, which could still be pending.

Overrides

Stream.BeginRead(byte[], int, int, AsyncCallback, object)

Exceptions

Type	Condition
IOException	Attempted an asynchronous read past the end of the stream, or a disk error occurs.
ArgumentException	One or more of the arguments is invalid.
ObjectDisposedException	Methods were called after the stream was closed.
NotSupportedException	The current `Stream` implementation does not support the read operation.

BeginWrite(byte[], int, int, AsyncCallback, object)

Begins an asynchronous write operation. (Consider using WriteAsync(byte[], int, int) instead.)

Declaration

{{< /rawhtml >}} ```C# public override IAsyncResult BeginWrite(byte[] buffer, int offset, int count, AsyncCallback callback, object state) ``` {{< rawhtml >}}

Parameters

Type	Name	Description
byte[]	buffer	The buffer to write data from.
int	offset	The byte offset in `buffer` from which to begin writing.
int	count	The maximum number of bytes to write.
AsyncCallback	callback	An optional asynchronous callback, to be called when the write is complete.
object	state	A user-provided object that distinguishes this particular asynchronous write request from other requests.

Returns

Type	Description
IAsyncResult	An `IAsyncResult` that represents the asynchronous write, which could still be pending.

Overrides

Stream.BeginWrite(byte[], int, int, AsyncCallback, object)

Exceptions

Type	Condition
IOException	Attempted an asynchronous write past the end of the stream, or a disk error occurs.
ArgumentException	One or more of the arguments is invalid.
ObjectDisposedException	Methods were called after the stream was closed.
NotSupportedException	The current `Stream` implementation does not support the write operation.

Close()

Closes the current stream and releases any resources (such as sockets and file handles) associated with the current stream. Instead of calling this method, ensure that the stream is properly disposed.

Declaration

{{< /rawhtml >}} ```C# public override void Close() ``` {{< rawhtml >}}

Overrides

Stream.Close()

CopyToAsync(Stream, int, CancellationToken)

Asynchronously reads the bytes from the current stream and writes them to another stream, using a specified buffer size and cancellation token. Both streams positions are advanced by the number of bytes copied.

Declaration

{{< /rawhtml >}} ```C# public override Task CopyToAsync(Stream destination, int bufferSize, CancellationToken cancellationToken) ``` {{< rawhtml >}}

Parameters

Type	Name	Description
Stream	destination	The stream to which the contents of the current stream will be copied.
int	bufferSize	The size, in bytes, of the buffer. This value must be greater than zero. The default size is 81920.
CancellationToken	cancellationToken	The token to monitor for cancellation requests. The default value is None.

Returns

Type	Description
Task	A task that represents the asynchronous copy operation.

Overrides

Stream.CopyToAsync(Stream, int, CancellationToken)

Exceptions

Type	Condition
ArgumentNullException	`destination` is null.
ArgumentOutOfRangeException	`bufferSize` is negative or zero.
ObjectDisposedException	Either the current stream or the destination stream is disposed.
NotSupportedException	The current stream does not support reading, or the destination stream does not support writing.
OperationCanceledException	The cancellation token was canceled. This exception is stored into the returned task.

EndRead(IAsyncResult)

Waits for the pending asynchronous read to complete. (Consider using ReadAsync(byte[], int, int) instead.)

Declaration

{{< /rawhtml >}} ```C# public override int EndRead(IAsyncResult asyncResult) ``` {{< rawhtml >}}

Parameters

Type	Name	Description
IAsyncResult	asyncResult	The reference to the pending asynchronous request to finish.

Returns

Type	Description
int	The number of bytes read from the stream, between zero (0) and the number of bytes requested. ReadAsync returns zero (0) only if zero bytes were requested or if no more bytes will be available because it's at the end of the stream; otherwise, read operations do not complete until at least one byte is available. If zero bytes are requested, read operations may complete immediately or may not complete until at least one byte is available (but without consuming any data).

Type

Description

int

The number of bytes read from the stream, between zero (0) and the number of bytes requested. ReadAsync returns zero (0) only if zero bytes were requested or if no more bytes will be available because it's at the end of the stream; otherwise, read operations do not complete until at least one byte is available. If zero bytes are requested, read operations may complete immediately or may not complete until at least one byte is available (but without consuming any data).

Overrides

Stream.EndRead(IAsyncResult)

Exceptions

Type	Condition
ArgumentNullException	`asyncResult` is null.
ArgumentException	A handle to the pending read operation is not available. -or- The pending operation does not support reading.
InvalidOperationException	`asyncResult` did not originate from a BeginRead(byte[], int, int, AsyncCallback, object) method on the current stream.
IOException	The stream is closed or an internal error has occurred.

EndWrite(IAsyncResult)

Ends an asynchronous write operation. (Consider using WriteAsync(byte[], int, int) instead.)

Declaration

{{< /rawhtml >}} ```C# public override void EndWrite(IAsyncResult asyncResult) ``` {{< rawhtml >}}

Parameters

Type	Name	Description
IAsyncResult	asyncResult	A reference to the outstanding asynchronous I/O request.

Overrides

Stream.EndWrite(IAsyncResult)

Exceptions

Type	Condition
ArgumentNullException	`asyncResult` is null.
ArgumentException	A handle to the pending write operation is not available. -or- The pending operation does not support writing.
InvalidOperationException	`asyncResult` did not originate from a BeginWrite(byte[], int, int, AsyncCallback, object) method on the current stream.
IOException	The stream is closed or an internal error has occurred.

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.

Declaration

{{< /rawhtml >}} ```C# public override void Flush() ``` {{< rawhtml >}}

Overrides

Stream.Flush()

Exceptions

Type	Condition
IOException	An I/O error occurs.

FlushAsync(CancellationToken)

Asynchronously clears all buffers for this stream, causes any buffered data to be written to the underlying device, and monitors cancellation requests.

Declaration

{{< /rawhtml >}} ```C# public override Task FlushAsync(CancellationToken cancellationToken) ``` {{< rawhtml >}}

Parameters

Type	Name	Description
CancellationToken	cancellationToken	The token to monitor for cancellation requests. The default value is None.

Returns

Type	Description
Task	A task that represents the asynchronous flush operation.

Overrides

Stream.FlushAsync(CancellationToken)

Exceptions

Type	Condition
ObjectDisposedException	The stream has been disposed.
OperationCanceledException	The cancellation token was canceled. This exception is stored into the returned task.

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.

Declaration

{{< /rawhtml >}} ```C# public override int Read(byte[] buffer, int offset, int count) ``` {{< rawhtml >}}

Parameters

Type	Name	Description
byte[]	buffer	An array of bytes. When this method returns, the buffer contains the specified byte array with the values between `offset` and (`offset` + `count` - 1) replaced by the bytes read from the current source.
int	offset	The zero-based byte offset in `buffer` at which to begin storing the data read from the current stream.
int	count	The maximum number of bytes to be read from the current stream.

Returns

Type	Description
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 `count` is 0 or the end of the stream has been reached.

Overrides

Stream.Read(byte[], int, int)

Exceptions

Type	Condition
ArgumentException	The sum of `offset` and `count` is larger than the buffer length.
ArgumentNullException	`buffer` is null.
ArgumentOutOfRangeException	`offset` or `count` is 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.

Declaration

{{< /rawhtml >}} ```C# public override Task ReadAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken) ``` {{< rawhtml >}}

Parameters

Type	Name	Description
byte[]	buffer	The buffer to write the data into.
int	offset	The byte offset in `buffer` at which to begin writing data from the stream.
int	count	The maximum number of bytes to read.
CancellationToken	cancellationToken	The token to monitor for cancellation requests. The default value is None.

Returns

Type	Description
Task<int>	A task that represents the asynchronous read operation. The value of the `TResult` parameter 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) if `count` is 0 or if the end of the stream has been reached.

Overrides

Stream.ReadAsync(byte[], int, int, CancellationToken)

Exceptions

Type	Condition
ArgumentNullException	`buffer` is null.
ArgumentOutOfRangeException	`offset` or `count` is negative.
ArgumentException	The sum of `offset` and `count` is 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.
OperationCanceledException	The cancellation token was canceled. This exception is stored into the returned task.

ReadByte()

Reads a byte from the stream and advances the position within the stream by one byte, or returns -1 if at the end of the stream.

Declaration

{{< /rawhtml >}} ```C# public override int ReadByte() ``` {{< rawhtml >}}

Returns

Type	Description
int	The unsigned byte cast to an int, or -1 if at the end of the stream.

Overrides

Stream.ReadByte()

Exceptions

Type	Condition
NotSupportedException	The stream does not support reading.
ObjectDisposedException	Methods were called after the stream was closed.

Seek(long, SeekOrigin)

When overridden in a derived class, sets the position within the current stream.

Declaration

{{< /rawhtml >}} ```C# public override long Seek(long offset, SeekOrigin origin) ``` {{< rawhtml >}}

Parameters

Type	Name	Description
long	offset	A byte offset relative to the `origin` parameter.
SeekOrigin	origin	A value of type SeekOrigin indicating the reference point used to obtain the new position.

Returns

Type	Description
long	The new position within the current stream.

Overrides

Stream.Seek(long, SeekOrigin)

Exceptions

Type	Condition
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.

Declaration

{{< /rawhtml >}} ```C# public override void SetLength(long value) ``` {{< rawhtml >}}

Parameters

Type	Name	Description
long	value	The desired length of the current stream in bytes.

Overrides

Stream.SetLength(long)

Exceptions

Type	Condition
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.

Declaration

{{< /rawhtml >}} ```C# public override void Write(byte[] buffer, int offset, int count) ``` {{< rawhtml >}}

Parameters

Type	Name	Description
byte[]	buffer	An array of bytes. This method copies `count` bytes from `buffer` to the current stream.
int	offset	The zero-based byte offset in `buffer` at which to begin copying bytes to the current stream.
int	count	The number of bytes to be written to the current stream.

Overrides

Stream.Write(byte[], int, int)

Exceptions

Type	Condition
ArgumentException	The sum of `offset` and `count` is greater than the buffer length.
ArgumentNullException	`buffer` is null.
ArgumentOutOfRangeException	`offset` or `count` is 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.

WriteAsync(byte[], int, int, CancellationToken)

Asynchronously writes a sequence of bytes to the current stream, advances the current position within this stream by the number of bytes written, and monitors cancellation requests.

Declaration

{{< /rawhtml >}} ```C# public override Task WriteAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken) ``` {{< rawhtml >}}

Parameters

Type	Name	Description
byte[]	buffer	The buffer to write data from.
int	offset	The zero-based byte offset in `buffer` from which to begin copying bytes to the stream.
int	count	The maximum number of bytes to write.
CancellationToken	cancellationToken	The token to monitor for cancellation requests. The default value is None.

Returns

Type	Description
Task	A task that represents the asynchronous write operation.

Overrides

Stream.WriteAsync(byte[], int, int, CancellationToken)

Exceptions

Type	Condition
ArgumentNullException	`buffer` is null.
ArgumentOutOfRangeException	`offset` or `count` is negative.
ArgumentException	The sum of `offset` and `count` is larger than the buffer length.
NotSupportedException	The stream does not support writing.
ObjectDisposedException	The stream has been disposed.
InvalidOperationException	The stream is currently in use by a previous write operation.
OperationCanceledException	The cancellation token was canceled. This exception is stored into the returned task.

WriteByte(byte)

Writes a byte to the current position in the stream and advances the position within the stream by one byte.

Declaration

{{< /rawhtml >}} ```C# public override void WriteByte(byte value) ``` {{< rawhtml >}}

Parameters

Type	Name	Description
byte	value	The byte to write to the stream.

Overrides

Stream.WriteByte(byte)

Exceptions

Type	Condition
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.

Implements

IAsyncDisposable

IDisposable