MessageEncoder::WriteMessage Method (Message^, Int32, BufferManager^, Int32)

.NET Framework (current version)

When overridden in a derived class, writes a message of less than a specified size to a byte array buffer at the specified offset.

Namespace: System.ServiceModel.Channels
Assembly: System.ServiceModel (in System.ServiceModel.dll)

Syntax

C++

public:
virtual ArraySegment<unsigned char> WriteMessage(
	Message^ message,
	int maxMessageSize,
	BufferManager^ bufferManager,
	int messageOffset
) abstract

Parameters

message: Type: System.ServiceModel.Channels::Message^
The Message to write to the message buffer.

maxMessageSize: Type: System::Int32
The maximum message size that can be written.

bufferManager: Type: System.ServiceModel.Channels::BufferManager^
The BufferManager that manages the buffer to which the message is written.

messageOffset: Type: System::Int32
The offset of the segment that begins from the start of the byte array that provides the buffer.

Return Value

Type: System::ArraySegment<Byte>

A ArraySegment<T> of type byte that provides the buffer to which the message is serialized.

Remarks

This method is called by WriteMessage(Message^, Int32, BufferManager^, Int32).

Examples

The following code shows how to implement the WriteMessage(Message^, Int32, BufferManager^, Int32) method.

public override ArraySegment<byte> WriteMessage(Message message, int maxMessageSize, BufferManager bufferManager, int messageOffset)
{
    MemoryStream stream = new MemoryStream();
    XmlWriter writer = XmlWriter.Create(stream, this.writerSettings);
    message.WriteMessage(writer);
    writer.Close();

    byte[] messageBytes = stream.GetBuffer();
    int messageLength = (int)stream.Position;
    stream.Close();

    int totalLength = messageLength + messageOffset;
    byte[] totalBytes = bufferManager.TakeBuffer(totalLength);
    Array.Copy(messageBytes, 0, totalBytes, messageOffset, messageLength);

    ArraySegment<byte> byteArray = new ArraySegment<byte>(totalBytes, messageOffset, messageLength);
    return byteArray;
}

Universal Windows Platform
Available since 8
.NET Framework
Available since 3.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0