The name '__o' does not exist in the current context

Question

I just installed Visual Studio 2015 and opened my asp .net project that I was working on. I\'m receiving many errors (all exactly the same) as below:

Answer 1

What resolved this problem from its heart for me was to add a dummy expression early in the page. E.g. <%="" %>. Check out this link for further explanation: https://forums.asp.net/post/1263727.aspx