SoapExtensionAttribute Class
When overridden in a derived class, specifies a SOAP extension should run with an XML Web service method.
Assembly: System.Web.Services (in System.Web.Services.dll)
The SoapExtensionAttribute type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | SoapExtensionAttribute | Initializes a new instance of the SoapExtensionAttribute class. |
| Name | Description | |
|---|---|---|
![]() | ExtensionType | When overridden in a derived class, gets the Type of the SOAP extension. |
![]() | Priority | When overridden in a derived class, gets or set the priority of the SOAP extension. |
![]() | TypeId | When implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.) |
| Name | Description | |
|---|---|---|
![]() | Equals | Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() | GetHashCode | Returns the hash code for this instance. (Inherited from Attribute.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | IsDefaultAttribute | When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.) |
![]() | Match | When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
| Name | Description | |
|---|---|---|
![]() ![]() | _Attribute::GetIDsOfNames | Maps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.) |
![]() ![]() | _Attribute::GetTypeInfo | Retrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.) |
![]() ![]() | _Attribute::GetTypeInfoCount | Retrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.) |
![]() ![]() | _Attribute::Invoke | Provides access to properties and methods exposed by an object. (Inherited from Attribute.) |
XML Web service methods created using ASP.NET can be configured to run with a SOAP extension by applying an attribute to the XML Web service method. When a custom extension attribute is added to an XML Web service method or a method on a client proxy class, ASP.NET invokes the associated extension at the appropriate time. An extension attribute is a custom attribute class deriving from SoapExtensionAttribute. Derived attributes must override the ExtensionType property to return the type of extension that is associated with the attribute.
The following TraceExtensionAttribute class derives from SoapExtensionAttribute to support applying the attribute to an XML Web service method or a method in an XML Web service client proxy class. When applied to either, the TraceExtension SOAP extension runs with the method.
// Create a SoapExtensionAttribute for a SOAP extension that can be // applied to an XML Web service method. [AttributeUsage(AttributeTargets::Method)] public ref class TraceExtensionAttribute: public SoapExtensionAttribute { private: String^ myFilename; int myPriority; public: // Set the name of the log file were SOAP messages will be stored. TraceExtensionAttribute() : SoapExtensionAttribute() { myFilename = "C:\\logClient.txt"; } property Type^ ExtensionType { // Return the type of 'TraceExtension' class. virtual Type^ get() override { return TraceExtension::typeid; } } property int Priority { // User can set priority of the 'SoapExtension'. virtual int get() override { return myPriority; } virtual void set( int value ) override { myPriority = value; } } property String^ Filename { String^ get() { return myFilename; } void set( String^ value ) { myFilename = value; } } };
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.




