SoapException Class

Represents the exception that is thrown when an XML Web service method is called over SOAP and an exception occurs.

Namespace: System.Web.Services.Protocols
Assembly: System.Web.Services (in

public class SoapException : SystemException
/** @attribute SerializableAttribute() */ 
public class SoapException extends SystemException
public class SoapException extends SystemException
Not applicable.

The SoapException can either be thrown by the common language runtime or by an XML Web service method. The common language runtime can throw a SoapException if a response to a request is not formatted correctly. XML Web service methods can generate a SoapException by simply throwing an exception within the XML Web service method. If the client accessed the method over SOAP, the exception is caught on the server and wrapped inside a new SoapException. The SoapException thrown has the following property values:




The Message property of the original exception.




The URL of the XML Web service method.


a null reference (Nothing in Visual Basic), but an empty detail element is present in the fault element.

An XML Web service method might throw a SoapException when clients call using SOAP. If an XML Web service throws the SoapException, other details can be added through the Actor, Code and Detail properties that cannot otherwise be set by an XML Web service method if another type of exception is thrown.

The following example throws a SoapException where the XML Web service method sets the Detail property.

<%@ 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 
    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", "");
        System.Xml.XmlNode detailsChild = doc.CreateNode(XmlNodeType.Element, "childOfSpecialInfo", "");

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

        // Append the two child elements to the detail node.

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

        throw se;
        return;    }


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0