Mittels VB.NET über SOAP auf SAP zugreifen

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Imports System
Imports System.Net

Module Module2
    Sub Main(ByVal args As String())
        Dim URL As String = "http://<Server>/sap/bc/soap/rfc?sap-client=999"
        Dim cred As ICredentials = New NetworkCredential(<user>, <Passwort>)
        Dim svc As New WebReference1.STFC_CONNECTIONService()
        Dim requtext As String, resptext As String, echotext As String
        svc.Url = URL
        svc.Credentials = cred
        requtext = "hello world"
        echotext = svc.STFC_CONNECTION(requtext, resptext)
        System.Console.WriteLine("ECHO: " + echotext)
        System.Console.WriteLine("RESP: " + resptext)
        System.Console.Read()
    End Sub
End Module

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<?xml version="1.0" encoding="utf-8"?>
<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:sap-com:document:sap:rfc:functions" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" targetNamespace="urn:sap-com:document:sap:rfc:functions" xmlns="http://schemas.xmlsoap.org/wsdl/">
  <types>
    <s:schema targetNamespace="urn:sap-com:document:sap:rfc:functions">
      <s:element name="STFC_CONNECTION">
        <s:complexType>
          <s:all>
            <s:element name="REQUTEXT">
              <s:simpleType>
                <s:restriction base="s:string">
                  <s:maxLength value="255" />
                </s:restriction>
              </s:simpleType>
            </s:element>
          </s:all>
        </s:complexType>
      </s:element>
      <s:element name="STFC_CONNECTION.Response">
        <s:complexType>
          <s:all>
            <s:element name="ECHOTEXT">
              <s:simpleType>
                <s:restriction base="s:string">
                  <s:maxLength value="255" />
                </s:restriction>
              </s:simpleType>
            </s:element>
            <s:element name="RESPTEXT">
              <s:simpleType>
                <s:restriction base="s:string">
                  <s:maxLength value="255" />
                </s:restriction>
              </s:simpleType>
            </s:element>
          </s:all>
        </s:complexType>
      </s:element>
    </s:schema>
  </types>
  <message name="STFC_CONNECTIONInput">
    <part name="parameters" element="s0:STFC_CONNECTION" />
  </message>
  <message name="STFC_CONNECTIONOutput">
    <part name="parameters" element="s0:STFC_CONNECTION.Response" />
  </message>
  <portType name="STFC_CONNECTIONPortType">
    <operation name="STFC_CONNECTION">
      <input message="s0:STFC_CONNECTIONInput" />
      <output message="s0:STFC_CONNECTIONOutput" />
    </operation>
  </portType>
  <binding name="STFC_CONNECTIONBinding" type="s0:STFC_CONNECTIONPortType">
    <soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document" />
    <operation name="STFC_CONNECTION">
      <soap:operation soapAction="http://www.sap.com/STFC_CONNECTION" />
      <input>
        <soap:body use="literal" />
      </input>
      <output>
        <soap:body use="literal" />
      </output>
    </operation>
  </binding>
  <service name="STFC_CONNECTIONService">
    <documentation>SAP Service STFC_CONNECTION via SOAP</documentation>
    <port name="STFC_CONNECTIONPortType" binding="s0:STFC_CONNECTIONBinding">
      <soap:address location="http://<server>/sap/bc/soap/rfc" />
    </port>
  </service>
</definitions>