System.ServiceModel 4.0.0.0 System.ServiceModel.Description.MessagePartDescription To be added. Represents a SOAP message header. Constructor 4.0.0.0 To be added. Initializes a new instance of the class with a specified qualified name. The name of the message header. The namespace of the message header. Property 4.0.0.0 System.String To be added. To be added. Gets or sets the intended recipient of the message header. Property 4.0.0.0 System.Boolean To be added. To be added. Gets or sets a value indicating if the header must be understood according to the SOAP 1.1 and 1.2 specification.. Property 4.0.0.0 System.Boolean To be added. To be added. Gets a value that indicates whether the header should be relayed. Property 4.0.0.0 System.Boolean To be added. To be added. Gets or sets a value that indicates whether the message header is a message contract header.