Visual Studio 2013 reporting erroneous "does not contain a definition for" error for recent extension methods
For Visual Studio 2015, my solution didn't have an .sdf file, and restarting didn't help. However, the following steps fixed my problem:
- Close Visual Studio (important)
- Go to
[solution folder]\.vs\[solution name]\v14
- Delete the
.suo
file - Start Visual Studio
It turns out that closing all open files, then shutting down Visual Studio, and restarting fixed the issue. pff!
I had a similar problem that I resolved by deleting *.sdf file in the solution directory. VS2013 will re-create it.
UPDATE This is what I know now: https://stackoverflow.com/a/38708050/90475