Stream.Write Method

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Updated: December 2010

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.

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


Public MustOverride Sub Write ( _
    buffer As Byte(), _
    offset As Integer, _
    count As Integer _
public abstract void Write(
    byte[] buffer,
    int offset,
    int count


  • buffer
    Type: array<System.Byte[]
    An array of bytes. This method copies count bytes from buffer to the current stream.
  • offset
    Type: System.Int32
    The zero-based byte offset in buffer at which to begin copying bytes to the current stream.
  • count
    Type: System.Int32
    The number of bytes to be written to the current stream.


Use the CanWrite property to determine whether the current instance supports writing.

If the write operation is successful, the position within the stream advances by the number of bytes written. If an exception occurs, the position within the stream remains unchanged.

Version Information


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

See Also


Change History




December 2010

Removed exceptions.

Information enhancement.