The type or namespace name 'Entity' does not exist in the namespace 'System.Data'

Question

I\'m using WS class and it gave me error when I run the application:

The type or namespace name \'Entity\' does not exist in the namespace \'System.Data\' 
<         


        

Answer 1

I will add my answer to cover all cases:

My solution was unistalling EntityFramework from NuGet Package Manager and then I was prompted to restart Visual Studio because it couldn't "finalize the uninstall".

I restarted Visual Studio and reinstalled EntityFramework then my problem was solved.

Hope this helps someone!