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ActionMessageFilter Class

Represents a query that tests whether the action of a message is one of a specified set of actions.

Namespace:  System.ServiceModel.Dispatcher
Assembly:  System.ServiceModel (in System.ServiceModel.dll)

public class ActionMessageFilter : MessageFilter

It is invalid to construct an ActionMessageFilter with no actions.

This type is serializable as a DataContractAttribute.

The following example creates two ActionMessageFilters, gets the action string out of one of the filters using the Actions property, tests a message against the action filters directly, and displays the result of applying the filter.

using System;
using System.Collections.ObjectModel;
using System.ServiceModel;
using System.ServiceModel.Channels;
using System.ServiceModel.Dispatcher;

namespace UE.Wfc.Samples
    public static class ActionMessageFilterMatching
        public static void Main()
            // Create several action filters.
            ActionMessageFilter myActFltr = new ActionMessageFilter("1st Action", "2nd Action");
            ActionMessageFilter yourActFltr = new ActionMessageFilter("Your Action");

            // Display the ActionMessageFilter actions.
            ReadOnlyCollection<string> results = myActFltr.Actions;

            foreach (string result in results)

            // Create a message.
            Message message = Message.CreateMessage(MessageVersion.Soap12WSAddressing10, "myBody");

            // Test the message action against a single action filter. 
            bool test1 = myActFltr.Match(message);
            bool test2 = yourActFltr.Match(message);
            System.Console.WriteLine("The result of test1 is {0}", test1);
            System.Console.WriteLine("The result of test2 is {0}", test2);


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 Server 2008 R2, Windows Server 2008, Windows Server 2003

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