BeginWrite Method
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GZipStream.BeginWrite Method

Begins an asynchronous write operation.

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

[HostProtectionAttribute(SecurityAction.LinkDemand, ExternalThreading = true)]
public override IAsyncResult BeginWrite(
	byte[] array,
	int offset,
	int count,
	AsyncCallback asyncCallback,
	Object asyncState
)

Parameters

array
Type: System.Byte[]

The buffer containing data to write to the current stream.

offset
Type: System.Int32

The byte offset in array at which to begin writing.

count
Type: System.Int32

The maximum number of bytes to write.

asyncCallback
Type: System.AsyncCallback

An optional asynchronous callback to be called when the write is complete.

asyncState
Type: System.Object

A user-provided object that distinguishes this particular asynchronous write request from other requests.

Return Value

Type: System.IAsyncResult
An IAsyncResult object that represents the asynchronous write, which could still be pending.

ExceptionCondition
InvalidOperationException

The underlying stream is null.

-or-

The underlying stream is closed.

NoteNote:

The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: ExternalThreading. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

The BeginWrite method starts an asynchronous write operation to a GZipStream stream object.

You must create a callback method that implements the AsyncCallback delegate and pass its name to the BeginWrite method.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

Supported in: 3.5, 3.0, 2.0

.NET Compact Framework

Supported in: 3.5

XNA Framework

Supported in: 3.0

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