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Stream.CopyTo Method (Stream, Int32)

July 28, 2014

Reads all the bytes from the current stream and writes them to a destination stream, using a specified buffer size.

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

public void CopyTo(
	Stream destination,
	int bufferSize
)

Parameters

destination
Type: System.IO.Stream
The stream that will contain the contents of the current stream.
bufferSize
Type: System.Int32
The size of the buffer. This value must be greater than zero. The default size is 4096.

ExceptionCondition
ArgumentNullException

destination is null.

ArgumentOutOfRangeException

bufferSize is negative or zero.

NotSupportedException

The current stream does not support reading.

-or-

destination does not support writing.

ObjectDisposedException

Either the current stream or destination were closed before the CopyTo method was called.

IOException

An I/O error occurred.

Copying begins at the current position in the current stream.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1

Windows Phone

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