The [MessageBodyMember] attribute identifies the members who are to be serialized as a SOAP body element:
[MessageContract]
public class BookOrder
{
[MessageHeader]
public string ISBN
[MessageBodyMember]
public int Quantity
This code snippet defines a message contract, as well a message header and a message body member.
The value of ISBN will be a data member as a SOAP message header, and the value of Quantity will be serialized into the SOAP body.
Name
The Name property of the [MessageBodyMember] attribute defines the name of the element for this member:
[MessageContract]
public class BookOrder
{
[MessageHeader]
public string ISBN
[MessageBodyMember(Name=”BookOrderQuantity”]
public int Quantity
This property must follow XML standards and be a valid XML element. For example, in this code snippet, the Name parameter is applied to the [MessageBodyMember] attribute with a value of BookOrderQuantity, which will be the name of the SOAP message XML element.
Order
The Order property of the [MessageBodyMember] attribute specifies the ordinal position in which each message body member will be serialized into the SOAP message body:
[MessageContract]
public class BookOrder
{
[MessageHeader]
public string ISBN
[MessageBodyMember(Order=1)]
public int Quantity
[MessageBodyMember(Order=2)]
public string FirstName
[MessageBodyMember(Order=3)]
public string LastName
In this example, the Order attribute is applied to all the [MessageBodyMember] attributes in the message contract, thus the XML SOAP message will contain the XML elements in the specified order. If no Order parameter is specified, the elements are ordered alphabetically.