<%@ WebService Language="VB" class="ThrowSoapException"%>

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

Public Class ThrowSoapException
    Inherits WebService

    ' This XML Web service method generates a SOAP Client Fault code 
    <WebMethod()> _
    Public Sub myThrow()

        ' Build the detail element of the SOAP fault.
        Dim doc As New System.Xml.XmlDocument()
        Dim node As System.Xml.XmlNode = doc.CreateNode(XmlNodeType.Element, _
            SoapException.DetailElementName.Name, _
            SoapException.DetailElementName.Namespace)

        ' Build specific details for the SoapException.
        ' Add first child of detail XML element.
        Dim details As System.Xml.XmlNode = doc.CreateNode(XmlNodeType.Element, _
            "mySpecialInfo1", "http://tempuri.org/")

        ' Add second child of detail XML element with an attribute.
        Dim details2 As System.Xml.XmlNode = doc.CreateNode(XmlNodeType.Element, _
            "mySpecialInfo2", "http://tempuri.org/")
        Dim attr As XmlAttribute = doc.CreateAttribute("t", "attrName", _
            "http://tempuri.org/")
        attr.Value = "attrValue"
        details2.Attributes.Append(attr)

        ' Append the two child elements to the detail node.
        node.AppendChild(details)
        node.AppendChild(details2)

        'Throw the exception    
        Dim se As New SoapException("Fault occurred", SoapException.ClientFaultCode, _
                                    Context.Request.Url.AbsoluteUri, node)
        Throw se
        Return
    End Sub
End Class

<%@ WebService Language="C#" class="ThrowSoapException"%>

using System;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Xml.Serialization;
using System.Xml;

public class ThrowSoapException : WebService 
{
//    This XML Web service method generates a SOAP Client Fault code 
    [WebMethod]
    public void myThrow(){

        // Build the detail element of the SOAP fault.
        System.Xml.XmlDocument doc = new System.Xml.XmlDocument();
        System.Xml.XmlNode node = doc.CreateNode(XmlNodeType.Element, SoapException.DetailElementName.Name, SoapException.DetailElementName.Namespace);


        // Build specific details for the SoapException.
        // Add first child of detail XML element.
        System.Xml.XmlNode details = doc.CreateNode(XmlNodeType.Element, "mySpecialInfo1", "http://tempuri.org/");
        System.Xml.XmlNode detailsChild = doc.CreateNode(XmlNodeType.Element, "childOfSpecialInfo", "http://tempuri.org/");
        details.AppendChild(detailsChild);


        // Add second child of detail XML element with an attribute.
        System.Xml.XmlNode details2 = doc.CreateNode(XmlNodeType.Element, "mySpecialInfo2", "http://tempuri.org/");
        XmlAttribute attr = doc.CreateAttribute("t", "attrName", "http://tempuri.org/");
        attr.Value = "attrValue";
        details2.Attributes.Append(attr);

        // Append the two child elements to the detail node.
        node.AppendChild(details);
        node.AppendChild(details2);


        //Throw the exception.    
        SoapException se = new SoapException("Fault occurred", SoapException.ClientFaultCode,Context.Request.Url.AbsoluteUri,node);

        throw se;
        return;    }
}