VS 2010 Error “Object reference not set to an inst

Question

I have a VS2010 (RTM) solution which contains:

WCF Service project
Console WCF client project
Class project for DataContracts and members
Class project for some simple classes

I successfully added a service reference in the console client project and ran the client. I then did a long dev cycle repeatedly modifying the service then updating console service reference. I then changed the namespace and assembly names for the projects as well as the .cs using references and app.config. I of course missed some things as it would not build so I eventually removed the project references and the service reference, cleaned and built successfully.

I then attempted to add the service reference again, it discovered it but threw the “Object reference not set to an instance of an object” when OK'ing. Fix in answer below...

Answer 1

To anyone having this problem and not helped with the above approaches : See if the UI portion has some data bindings (in my case it was a datagrid control on a silverlight client) ymmv Also, if you are having a service client, then the bindings in this form probably may come in the form of _Completed method, have a closer look into it to see if you are missing some data/parameters that ought to be there. hth