Visual Studio not displaying compile time errors in editor

Question

For example, when I write:

string x = \"turtle\";
x.Go();

There is no red squiggly line detecting the absence of the Go() method on String.

Answer 1

Select Tool -> Options, then Text Editor. Under the language you are using (ie C#), go to the Advanced and make sure the Underline errors in the editor and Show live semantic errors are checked