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OperationMessage Class

Represents a message type passed by the action of an XML Web service.

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

public abstract class OperationMessage : NamedItem

The OperationMessage type exposes the following members.

Protected methodOperationMessageInitializes a new instance of the OperationMessage class.

Public propertyDocumentationGets or sets the text documentation for the instance of the DocumentableItem. (Inherited from DocumentableItem.)
Public propertyDocumentationElementGets or sets the documentation element for the DocumentableItem. (Inherited from DocumentableItem.)
Public propertyExtensibleAttributesGets or sets an array of type XmlAttribute that represents attribute extensions of WSDL to comply with Web Services Interoperability (WS-I) Basic Profile 1.1. (Inherited from DocumentableItem.)
Public propertyExtensionsGets the ServiceDescriptionFormatExtensionCollection associated with this DocumentableItem. (Inherited from DocumentableItem.)
Public propertyMessageGets or sets an abstract, typed definition of the data being communicated.
Public propertyNameGets or sets the name of the item. (Inherited from NamedItem.)
Public propertyNamespacesGets or sets the dictionary of namespace prefixes and namespaces used to preserve namespace prefixes and namespaces when a ServiceDescription object is constructed. (Inherited from DocumentableItem.)
Public propertyOperationGets the Operation of which the OperationMessage is a member.

Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

This class serves as the base class for the following classes:

using System;
using System.Xml;
using System.Web.Services;
using System.Web.Services.Description;

class MyOperationMessageSample
   static void Main()
         ServiceDescription myDescription = 
         PortTypeCollection myPortTypeCollection  = 

         // Get the OperationCollection for the SOAP protocol.
         OperationCollection myOperationCollection =

         // Get the OperationMessageCollection for the Add operation.
         OperationMessageCollection myOperationMessageCollection = 

         OperationMessage myInputOperationMessage =
            (OperationMessage) new OperationInput();
         XmlQualifiedName myXmlQualifiedName = new XmlQualifiedName(
            "AddSoapIn", myDescription.TargetNamespace);
         myInputOperationMessage.Message = myXmlQualifiedName;
         myOperationMessageCollection.Insert(0, myInputOperationMessage);

         // Display the operation name of the InputMessage.
         Console.WriteLine("The operation name is " + 

         // Add the OperationMessage to the collection.
      catch(Exception e)
         Console.WriteLine("Exception caught!!!");
         Console.WriteLine("Source : " + e.Source);
         Console.WriteLine("Message : " + e.Message);

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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.

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