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SoapExtensionImporter Class

Provides a common interface and functionality for classes to generate code attributes that specify SOAP extensions.

Namespace:  System.Web.Services.Description
Assembly:  System.Web.Services (in System.Web.Services.dll)

[PermissionSetAttribute(SecurityAction.InheritanceDemand, Name = "FullTrust")]
[PermissionSetAttribute(SecurityAction.LinkDemand, Name = "FullTrust")]
public abstract class SoapExtensionImporter

The SoapExtensionImporter abstract class exposes an abstract method, ImportMethod, which allows a derived class to add metadata to any method that represents an operation in a binding. The method itself is not an input method. The code attributes, which are added to all Web methods in a binding class, represent extensions to the SOAP Web services protocol, for example, for adding extra headers to an outgoing SOAP message or doing extra processing on an incoming SOAP message.

You can use a class derived from SoapExtensionImporterto extend the generation of client proxy code or abstract server code. You can use such a derived class in conjunction with a class derived from the abstract SoapExtension class, which extends run-time processing of SOAP messages on the client or service.

You can specify SoapExtensionImporter in a configuration file through the soapExtensionImporterTypes configuration element and its child add element. You can apply the configuration to:

  • An ASP.NET Web application: service or client.

  • A stand-alone .NET Framework application: client only.


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 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0