Can't reference class library in asp.net MVC

Question

I do this lesson from: http://www.codeproject.com/Articles/1010152/Learn-MVC-Project-in-Days-Day I'am at the end lab 32. I did everything step by step but I have this error:

The type or namespace name 'BusinessEnties' (or ViewModel) could not be found (are you missing a using directive or an assembly reference?)

When I add any reference to WebApplication1 I see BusinessEnties or ViewModel and I have no errors but when I build this errors back.

UPDATED

My class tree:

And dependecy map

We can't help you without seeing what you're doing. How are you adding the reference? Are you sure the library contains the classes you seek? — user47589
– user47589, Commented Oct 3, 2016 at 15:52
Did you add a using statement to the top of the file(s) that make use of classes in this library? — Chris Pratt
– Chris Pratt, Commented Oct 3, 2016 at 16:02
This typically happens to me when the .Net versions don't match. Check the type of the MVC project and Class Library. — Erik Philips
– Erik Philips, Commented Oct 3, 2016 at 16:22

Erik Philips · Accepted Answer · 2016-10-03 17:09:06Z

3

Check your projects .Net versions. If the MVC Project has a lesser version then the class Library it most likely won't work.

answered Oct 3, 2016 at 17:09

Erik Philips

54.8k11 gold badges133 silver badges158 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Found this to be the case for me. Had to upgrade the versions to match

Jalal Malekpour · Accepted Answer · 2021-07-25 03:26:06Z

0

Make sure the classes are Public

answered Jul 25, 2021 at 3:26

Jalal Malekpour

4710 bronze badges