Symptom The CS0433 problem occurs when DomainServiceFault is used in version 5.4.0

[2908411009]

Describe the bug Use version 5.4.0 in. NET 6.0 environment, CS0433 problem, regenerate solution is not effective

[2908411009]

Through NuGet install OpenRiaServices. Client. Core: 5.4.0 package

[SandstromErik]

I have been able to recreate it and will look more into the problem

[Daniel-Svensson]

Are you using net6.0 or net6.0-windows as target framework?

Some thoughts

• I was a bit surprised that the type was public and not internal to http assembly
• I might be feasible to move type to client assembly and use typeforward attributes to preserve binary backwards compatibility (as long as it does not contain anything wcf specific requiring additional references)
• the generated code is only useful for wcf client (and it might be that the wcf code adds it manually so it is not needed at all, in case it can be removed from code generation) .
• update: se https://github.com/OpenRIAServices/OpenRiaServices/blob/e32f5ca14b31bb02165e1bea00cc8aba9d70a4b5/src/OpenRiaServices.Client.Web/Framework/Web/Internal/WcfEndpointBehavior.cs#L79, comment looks like it is not needed in generated code
• moving wcf to its own nuget package might make it a bit easier, but still you want to be able to reference both (it does not solve issue completely)

Possible workaround?

• it might be possible with some msbuild "magic" to update the reference to the client.web assembly and add aliases (https://jeanarjean.com/blog/2021-03-10-how-to-create-alias-property-in-your-csproj ) just for that assembly
• start/stop using t4 codegen (add or Remove t4 nuget from server project)

[Daniel-Svensson]

@2908411009

The FaultContract attribute which you have problem with should not be generated by the codegen by default since it is not needed. Here is output from "SimpleWPF" codegen in Samples repo

1. Are you using the 5.4.0 codegen nuget?
   • If not make sure you to update and try again
2. Do you happen to be manually adding the "FaultContract" attribute to your DomainServices ?
   • It should not be needed so you can remove them and resolve the issue

[Daniel-Svensson]

closing since no reply since october, feel free to reply and reopen with requested details