c# - Share Types between WCF of Multiple Services -

i have java web server has 2 endpoints: systemmanagement , usermanagement. 2 endpoints use same libraries. therefore, classes in 2 endpoints identical.

and have c# client side uses 2 services. know wcf can share classes. make new project , let client project reference new project. make common class "session" in new project.

namespace wcfexplore.usermanagement {     [datacontract]     public partial class session : object, system.componentmodel.inotifypropertychanged     {         private string sessionidfield;         private string useridfield;          [system.xml.serialization.xmlelementattribute(form = system.xml.schema.xmlschemaform.unqualified, order = 3)]         [datamember]         public string sessionid         {             { return this.sessionidfield; }             set             {                 this.sessionidfield = value;                 this.raisepropertychanged("sessionid");             }         }         [system.xml.serialization.xmlelementattribute(form = system.xml.schema.xmlschemaform.unqualified, order = 4)]         [datamember]         public string userid         {             { return this.useridfield; }             set             {                 this.useridfield = value;                 this.raisepropertychanged("userid");             }         }          public event system.componentmodel.propertychangedeventhandler propertychanged;          protected void raisepropertychanged(string propertyname)         {             system.componentmodel.propertychangedeventhandler propertychanged = this.propertychanged;             if (propertychanged != null)                 propertychanged(this, new system.componentmodel.propertychangedeventargs(propertyname));         }     } } 

but when update service references, visual studio still generates class "session" own.

[system.codedom.compiler.generatedcodeattribute("system.xml", "4.0.30319.225")] [system.serializableattribute()] [system.diagnostics.debuggerstepthroughattribute()] [system.componentmodel.designercategoryattribute("code")] [system.xml.serialization.xmltypeattribute(namespace="http://iboss2.service.iasia.com/")] public partial class session : object, system.componentmodel.inotifypropertychanged {      private string sessionidfield;      private string useridfield;      /// <remarks/>     [system.xml.serialization.xmlelementattribute(form=system.xml.schema.xmlschemaform.unqualified, order=3)]     public string sessionid {         {             return this.sessionidfield;         }         set {             this.sessionidfield = value;             this.raisepropertychanged("sessionid");         }     }      /// <remarks/>     [system.xml.serialization.xmlelementattribute(form=system.xml.schema.xmlschemaform.unqualified, order=4)]     public string userid {         {             return this.useridfield;         }         set {             this.useridfield = value;             this.raisepropertychanged("userid");         }     }      public event system.componentmodel.propertychangedeventhandler propertychanged;      protected void raisepropertychanged(string propertyname) {         system.componentmodel.propertychangedeventhandler propertychanged = this.propertychanged;         if ((propertychanged != null)) {             propertychanged(this, new system.componentmodel.propertychangedeventargs(propertyname));         }     } } 

what make 2 service references use common class? don't want 2 service references generating own class duplicated.

you can try reuse types referenced assemblies option when generate second service reference. force visual studio reflect on first service reference's types , try reference them possible rather re-creating them in different namespace.

by specifying re-use in way, visual studio calls svcutil.exe under hood /r flag.

however, svcutil.exe uses datacontractserializer generate code , unfortunately has rather strict set of rules when comes parsing service contracts.

so unless service xsds adhere set of rules svcutil.exe switch use xmlserializer, doesn't support /r flag (or re-use). hence not able re-use types.

you can use wscf.blue generate service contracts, has it's own custom serializer , supports re-use of types.