Comments by Asad Naeem (Top 1 by date)

I have also found the reason in my project. Let me explain little bit here. I have two projects in my wcf service solution. first project is related to some general classes/entities. second one is wcf project. I had added a new property in one of the entities of my first project's classes but I did not add its reference again after building. I was assuming that this should work automatically but unfortunately it did not. So when I updated my reference it removed all the entity classes from my reference.cs and lots of errors appears. After following the above solution. I rebuild my first project and re-added its reference in my second project and then updated its reference again so it worked fine.