Creating contracts for XmlSerializer

When working with XmlSerializer you might notice that you generated contract contains double definitions for some or all types.
This is shown at two following pictures. As you can see at marked places it is obvious that double definition comes form DataContract serializer, although you just want to use XmlSerializer.

Next picture shows what causes this behavior.

XmlSerializerFormatAttribute enforces Metadata Exporter to create DataContract version of types. To workaround this remove this attribute from all operations:

[System.ServiceModel.OperationContractAttribute(Action = "urn:epcglobal:epcis:wsdl:1:EPCISServicePortType:captureRequest", ReplyAction = "urn:epcglobal:epcis:wsdl:1:EPCISServicePortType:captureResponse")]

//[System.ServiceModel.ServiceKnownTypeAttribute(typeof(EPCISException))]

[System.ServiceModel.FaultContractAttribute(typeof(EPCISException), Action = "http://www.w3.org/2005/08/addressing/soap/fault", Name = "EPCISException", Namespace = "urn:epcglobal:epcis-query:xsd:1")]

[System.ServiceModel.FaultContractAttribute(typeof(ValidationException), Action = "http://www.w3.org/2005/08/addressing/soap/fault", Name = "ValidationException", Namespace = "urn:epcglobal:epcis-query:xsd:1")]

[System.ServiceModel.XmlSerializerFormatAttribute()]

captureResponse capture(captureRequest req);

[System.ServiceModel.OperationContractAttribute(Action = "urn:epcglobal:epcis:wsdl:1:EPCISServicePortType:getQueryNamesRequest", ReplyAction = "urn:epcglobal:epcis:wsdl:1:EPCISServicePortType:getQueryNamesResponse")]

[System.ServiceModel.FaultContractAttribute(typeof(SecurityException), Action = "http://www.w3.org/2005/08/addressing/soap/fault", Name = "SecurityException", Namespace = "urn:epcglobal:epcis-query:xsd:1")]

[System.ServiceModel.FaultContractAttribute(typeof(ValidationException), Action = "http://www.w3.org/2005/08/addressing/soap/fault", Name = "ValidationException", Namespace = "urn:epcglobal:epcis-query:xsd:1")]

[System.ServiceModel.FaultContractAttribute(typeof(ImplementationException), Action = "http://www.w3.org/2005/08/addressing/soap/fault", Name = "ImplementationException", Namespace = "urn:epcglobal:epcis-query:xsd:1")]

[System.ServiceModel.XmlSerializerFormatAttribute()]

getQueryNamesResponse getQueryNames(getQueryNamesRequest request);

/// <remarks/>
   [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Xml", "4.0.30319.1")]
   [System.SerializableAttribute()]
   [System.Diagnostics.DebuggerStepThroughAttribute()]
   [System.ComponentModel.DesignerCategoryAttribute("code")]
   [System.Xml.Serialization.XmlTypeAttribute(TypeName="ValidationException", Namespace="http://schemas.datacontract.org/2004/07/Daenet.Tracking.Epcis")]
   public partial class ValidationException1 : EPCISException1 {
      
       private PropertyResult1[] propertyResultListField;
      
       /// <remarks/>
       [System.Xml.Serialization.XmlArrayAttribute(IsNullable=true, Order=0)]
       [System.Xml.Serialization.XmlArrayItemAttribute(Namespace="http://schemas.datacontract.org/2004/07/Daenet.Tracking")]
       public PropertyResult1[] PropertyResultList {
           get {
               return this.propertyResultListField;
           }
           set {
               this.propertyResultListField = value;
               this.RaisePropertyChanged("PropertyResultList");
           }
       }
   }