Assembly: System.Web.Services (in System.Web.Services.dll)
is called at all SoapMessageStage stages for SOAP extensions applied to both XML Web services created using ASP.NET and their clients. At each SoapMessageStage, an instance of a class deriving from SoapMessage is passed to . If the SOAP extension is running on the XML Web service client, then a SoapClientMessage object is passed into ; otherwise a SoapServerMessage object is passed in.
The following example is the portion of a SOAP extension that logs SOAP requests and SOAP responses. By logging the SoapMessage at the AfterSerialize SoapMessageStage, the SOAP extension accesses the Stream to be sent over the wire. If the SOAP extension is applied to an XML Web service method created using ASP.NET, then the Stream contains the SOAP response from the XML Web service method. If the SOAP extension is applied to an XML Web service client, the Stream contains the SOAP request to an XML Web service method.
Classic SoapExtension.ProcessMessage Example#1