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Stream.Close Method

Closes the current stream and releases any resources (such as sockets and file handles) associated with the current stream.

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

public virtual void Close()

This method calls Dispose, specifying true to release all resources.

Flushing the stream will not flush its underlying encoder unless you explicitly call an implementation of Flush or Close. Setting AutoFlush to true means that data will be flushed from the buffer to the stream, but the encoder state will not be flushed. This allows the encoder to keep its state (partial characters) so that it can encode the next block of characters correctly. This scenario affects UTF8 and UTF7 where certain characters can be encoded only after the encoder receives the adjacent character or characters.

A call to Close is required for proper operation of a stream. Following a call to Close, other operations on the stream could throw exceptions. If the stream is already closed, a call to Close throws no exceptions.

Attempts to manipulate the stream after the stream has been closed might throw an ObjectDisposedException.

Notes to Implementers

In derived classes, do not override the Close method, instead, put all of the Stream cleanup logic in the Dispose method. For more information, see Implementing a Dispose Method.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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