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XPathMessageQuery Class
Visual Studio 2010
A message query that evaluates XPath expressions to retrieve data from a message.
Assembly: System.ServiceModel (in System.ServiceModel.dll)
The XPathMessageQuery type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | XPathMessageQuery() | Initializes a new instance of the XPathMessageQuery class. |
![]() | XPathMessageQuery(String) | Initializes a new instance of the XPathMessageQuery class with the specified XPath expression. |
![]() | XPathMessageQuery(String, XmlNamespaceManager) | Initializes a new instance of the XPathMessageQuery class with the specified XPath expression and XmlNamespaceManager. |
![]() | XPathMessageQuery(String, XsltContext) | Initializes a new instance of the XPathMessageQuery class with the specified XPath expression and XsltContext. |
| Name | Description | |
|---|---|---|
![]() | Expression | Gets or sets the XPath expression for the XPathMessageQuery instance. |
![]() | Namespaces | Gets the XmlNamespaceManager associated with this XPathMessageQuery instance. |
| Name | Description | |
|---|---|---|
![]() | CreateMessageQueryCollection | Creates a message query collection that enables optimizations when executing multiple queries against a message. (Overrides MessageQuery::CreateMessageQueryCollection().) |
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Evaluate<TResult>(Message) | Evaluates the XPath query against the specified Message. (Overrides MessageQuery::Evaluate<TResult>(Message).) |
![]() | Evaluate<TResult>(MessageBuffer) | Evaluates the XPath query against the specified MessageBuffer. (Overrides MessageQuery::Evaluate<TResult>(MessageBuffer).) |
![]() | 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 | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
The following example shows how to create a QueryCorrelationInitializer and specify a MessageQuerySet using a XPathMessageQuery.
new SendReply { Request = submitPO, Content = SendContent.Create(new InArgument<int>( (e) => po.Get(e).Id)), // creates a SendMessageContent CorrelationInitializers = { new QueryCorrelationInitializer { // initializes a correlation based on the PurchaseOrder Id sent in the reply message and stores it in the handle CorrelationHandle = poidHandle, MessageQuerySet = new MessageQuerySet { // int is the name of the parameter being sent in the outgoing response { "PoId", new XPathMessageQuery("sm:body()/ser:int", Constants.XPathMessageContext) } } } } },
Windows 7, Windows Vista SP1 or later, Windows XP SP3, 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.
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