I have been consuming a IBM Websphere (Java) web service using .Net 1.0 front
end writen in VB.NET.  The proxy class submits a soap request and gets a soap
response.
When I migrated the front-end to .NET1.1, the response from the web service
appears as null in the proxy class.  This only happens with .NET1.1, .NET1.0
is ok and works fine.  I have played around with the
System.Web.Services.Protocols.SoapDocumentMethodAttribute, but no luck. I
regenerated the proxy class using WSDL.exe v1.1 - it generated the same proxy
as per .NET1.0.
Could you please advise whether I need to change some other settings, and
also why the problem only occurs in .NET1.1.
Find attached the wsdl file and the proxy class.
...Jit.

WSDL.....
<definitions xmlns:http="http://schemas.xmlsoap.org/wsdl/http/"
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
xmlns:s="http://www.w3.org/2001/XMLSchema" xmlns:s0="urn:ServiceRequest"
xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/"
xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/"
xmlns="http://schemas.xmlsoap.org/wsdl/" targetNamespace="urn:ServiceRequest">
    <types>
        <s:schema elementFormDefault="qualified"
targetNamespace="urn:ServiceRequest">
            <s:complexType name="process3ParmRequest">
                <s:sequence>
                    <s:element minOccurs="0" maxOccurs="1" name="inputHeader"
type="s:string"/>
                    <s:element minOccurs="0" maxOccurs="1" name="messageControlPayload"
type="s:string"/>
                    <s:element minOccurs="0" maxOccurs="1" name="inputMessage"
type="s:string"/>
                </s:sequence>
            </s:complexType>
            <s:complexType name="process3ParmRequestResponse">
                <s:sequence>
                    <s:element minOccurs="0" maxOccurs="1" name="process3ParmRequestResult"
type="s:string"/>
                </s:sequence>
            </s:complexType>
            <s:element name="string" nillable="true" type="s:string"/>
        </s:schema>
    </types>
    <message name="process3ParmRequestSoapIn">
        <part name="parameters" type="s0:process3ParmRequest"/>
    </message>
    <message name="process3ParmRequestSoapOut">
        <part name="parameters" type="s0:process3ParmRequestResponse"/>
    </message>
    <portType name="GTPSRouterServiceSoap">
        <operation name="process3ParmRequest">
            <input message="s0:process3ParmRequestSoapIn"/>
            <output message="s0:process3ParmRequestSoapOut"/>
        </operation>
    </portType>
    <binding name="GTPSRouterServiceSoap" type="s0:GTPSRouterServiceSoap">
        <soap:binding style="document"
transport="http://schemas.xmlsoap.org/soap/http"/>
        <operation name="process3ParmRequest">
            <soap:operation soapAction="urn:ServiceRequest/process3ParmRequest"
style="document"/>
            <input>
                <soap:body use="encoded"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
            </input>
            <output>
                <soap:body use="encoded"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
            </output>
        </operation>
    </binding>
    <service name="GTPSRouterService">
        <port name="GTPSRouterServiceSoap" binding="s0:GTPSRouterServiceSoap">
            <soap:address
location="http://localhost/GTPSRRWebService/GTPSRouterService.asmx"/>
        </port>
    </service>
</definitions>

Proxy Class...
'------------------------------------------------------------------------------
' <autogenerated>
'     This code was generated by a tool.
'     Runtime Version: 1.0.3705.0
'
'     Changes to this file may cause incorrect behavior and will be lost if
'     the code is regenerated.
' </autogenerated>
'------------------------------------------------------------------------------

Option Strict Off
Option Explicit On

Imports System
Imports System.ComponentModel
Imports System.Diagnostics
Imports System.Web.Services
Imports System.Web.Services.Protocols
Imports System.Xml.Serialization

'
'This source code was auto-generated by wsdl, Version=1.0.3705.0.
'

'<remarks/>
<System.Diagnostics.DebuggerStepThroughAttribute(),  _
System.ComponentModel.DesignerCategoryAttribute("code"),  _

System.Web.Services.WebServiceBindingAttribute(Name:="GTPSRouterServiceSoap",
[Namespace]:="urn:ServiceRequest")>  _
Public Class GTPSRouterService
   Inherits System.Web.Services.Protocols.SoapHttpClientProtocol
   
   '<remarks/>
   Public Sub New()
       MyBase.New
       Me.Url = "http://localhost/GTPSRRWebService/GTPSRouterService.asmx"
   End Sub

   '<remarks/>
   
<System.Web.Services.Protocols.SoapDocumentMethodAttribute("urn:ServiceRequest/process3ParmRequest", _
                                                               
RequestNamespace:="urn:ServiceRequest", _
                                                               
ResponseNamespace:="urn:ServiceRequest", _
                                                               
Use:=System.Web.Services.Description.SoapBindingUse.Encoded, _
                                                               
ParameterStyle:=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)> _
   Public Function process3ParmRequest(ByVal inputHeader As String, ByVal
messageControlPayload As String, ByVal inputMessage As String) As String
       Dim results() As Object = Me.Invoke("process3ParmRequest", New
Object() {inputHeader, messageControlPayload, inputMessage})
       Return CType(results(0), String)
   End Function

   '<remarks/>
   Public Function Beginprocess3ParmRequest(ByVal inputHeader As String,
ByVal messageControlPayload As String, ByVal inputMessage As String, ByVal
callback As System.AsyncCallback, ByVal asyncState As Object) As
System.IAsyncResult
       Return Me.BeginInvoke("process3ParmRequest", New Object()
{inputHeader, messageControlPayload, inputMessage}, callback, asyncState)
   End Function

   '<remarks/>
   Public Function Endprocess3ParmRequest(ByVal asyncResult As
System.IAsyncResult) As String
       Dim results() As Object = Me.EndInvoke(asyncResult)
       Return CType(results(0), String)
   End Function
End Class