System.ServiceModel 4.0.0.0 System.Collections.ObjectModel.KeyedCollection<System.Xml.XmlQualifiedName,System.ServiceModel.Description.MessagePartDescription> System.Xml.XmlQualifiedName System.ServiceModel.Description.MessagePartDescription Enables you to find objects by name and namespace. Represents a collection of objects. Method 4.0.0.0 System.Xml.XmlQualifiedName To be added. When called by a derived class, returns the of the . The of the . The to locate.