Save the following code in a file called getSumAndDiffCS.cs:

using System;
using CookComputing.XmlRpc;

public struct Result 
{
  public int sum;
  public int difference;
}

[XmlRpcUri(
  "http://aspx.securedomains.com/cookcomputing/sumanddiffvb.aspx")]
class Proxy : XmlRpcClientProtocol
{
  [XmlRpcMethod("sample.sumAndDifference")]
    public Result SumAndDifference(int x, int y)
  {
    return (Result)Invoke("SumAndDifference", new Object[]{x,y})[0]; 
  }
}

public class App
{
  public static int Main(string[] args)
  {
    try
    {
      Proxy theProxy = new Proxy();
      Result ret = theProxy.SumAndDifference(5, 3);
      Console.WriteLine("5 + 3 = {0}", ret.sum);
      Console.WriteLine("5 - 3 = {0}", ret.difference);
    }
    catch(XmlRpcClientException cex)
    {
      Console.WriteLine("Client exception: {0} {1}", 
        cex.FaultCode, cex.FaultString);
    }
    catch(XmlRpcFaultException fex)
    {
      Console.WriteLine("Server exception: {0} {1}", 
        fex.FaultCode, fex.FaultString);
    }
    return 0;
  }
}

Use the following command to build the client:

csc /r:cookcomputing.xmlrpc.dll getSumAndDiffCS.cs

Save the following code in a file called getSumAndDiffVB.vb:

Imports CookComputing.XmlRpc

Module Module1
  
  Structure Result
    Dim sum, difference As Integer
  End Structure
  
  Class <XmlRpcUri( _
    "http://aspx.securedomains.com/cookcomputing/sumanddiffcs.xmlrpc")> _
  Proxy : Inherits XmlRpcClientProtocol

    Public Function <XmlRpcMethod("sample.sumAndDifference")> _
    SumAndDifference(ByVal x As Integer, ByVal y As Integer) As Result
      Dim results As Object() = Me.Invoke("SumAndDifference", _
                                 New Object() {x,y})
      Return CType(results(0), Result)
    End Function

  End Class
  
  Sub Main()
    Dim theProxy As New Proxy()
    Try
      Dim ret As Result = theProxy.SumAndDifference(5, 3)
      Console.WriteLine("5 + 3 = {0}", ret.sum)
      Console.WriteLine("5 - 3 = {0}", ret.difference)
    Catch cex As XmlRpcClientException
      Console.WriteLine("Client exception: {0} {1}", _
                        cex.FaultCode, cex.FaultString)
    Catch fex As XmlRpcFaultException
      Console.WriteLine("Server exception: {0} {1}", _
                        fex.FaultCode, fex.FaultString)
    End Try
  End Sub
  
End Module

Use the following command to build the client:

vbc /r:cookcomputing.xmlrpc.dll getSumAndDiffVB.vb

XML-RPC.Net enables the implementation of XML-RPC Services running in the IIS 5 web server environment.

Save the following code in a file called SumAndDiffCS.cs:

using System;
using CookComputing.XmlRpc;

public struct Result 
{
  public int sum;
  public int difference;
}

[XmlRpcService(Description=
  "Sample XML-RPC.Net Service implemented in C#")]
public class SumAndDiffService : XmlRpcService
{
  [XmlRpcMethod("sample.sumAndDifference", Description=
    "This function takes two integers as arguments and returns an "+
    "XML-RPC struct containing two elements: sum, the sum of the "+
    "two integers, and difference, the difference between the two "+
    "integers")]
  public Result SumAndDifference(int x, int y)
  {
    Result ret;
    ret.sum = x + y;
    ret.difference = x - y;
    return ret;
  }
}

Use the following to build the client:

csc /r:System.Web.dll,cookcomputing.xmlrpc.dll /target:library SumAndDiffCS.cs

Create an IIS virtual root, say cookcomputing for this example, and a bin directory underneath it. Place the assembly (SumAndDiffCS.dll) and the XML-RPC.Net assembly (cookcomputing.xmlrpc.dll) in the bin directory.

Create a text file called config.web in the cookcomputing root directory with the following contents:

<configuration>
  <httphandlers>
    <add verb="*" path="sumanddiffcs.aspx" type="SumAndDiffService, 
SumAndDiffCS" />
  </httphandlers> 
</configuration>

The Service is now installed and configured. To check this navigate your browser to the URL of the Service where you will see an automatically generated documentation page.

Save the following code in a file called SumAndDiffVB.cs:

Imports System
Imports CookComputing.XmlRpc

Public Structure Result
  Dim sum, difference As Integer
End Structure

Public Class <XmlRpcService(Description:= _
  "Sample XML-RPC.Net Service implemented in VB.Net")> _
SumAndDiffService : Inherits XmlRpcService
  
  Public Function <XmlRpcMethod("sample.sumAndDifference", _
  Description:= "This function takes two integers as arguments "+ _  
                "and returns an XML-RPC struct containing two "+ _
                "elements: sum, the sum of the two integers, and "+ _
                "difference, the difference between the two "+ _
                "integers")> _
  SumAndDifference(ByVal x As Integer, ByVal y As Integer) As Result
    Dim ret As Result
    ret.sum = x + y
    ret.difference = x - y
    Return ret
  End Function
  
End Class

Use the following to build the client:

vbc /r:System.Web.dll,cookcomputing.xmlrpc.dll /target:library SumAndDiffVB.vb

Create an IIS virtual root, say cookcomputing for this example, and a bin directory underneath it. Place the assembly (SumAndDiffVB.dll) and the XML-RPC.Net assembly (cookcomputing.xmlrpc.dll) in the bin directory.

Create a text file called config.web in the cookcomputing root directory with the following contents (note that the entries are case sensitive):

<configuration>
  <httphandlers>
    <add verb="*" path="sumanddiffvb.aspx" type="SumAndDiffService, 
SumAndDiffVB" />
  </httphandlers> 
</configuration>

The Service is now installed and configured. To check this navigate your browser to the URL of the Service where you will see an automatically generated documentation page.