Errors are not displayed in the error list when opening a C# project (that opens a file containing errors). #245
Description
Ported from TFS WorkItem: 1108097
Repro Steps:
Create a C# console app.
Introduce some errors in program.cs
Close VS
Restart VS and open the solution.
The errors in program.cs show up as squiggles in the editor but do not appear in the error list.
Make any change in program.cs (even adding a space to a comment).
Errors now appear in the error list.