If you happen to be unfortunate enough to stumble across “region”-ised C# code, use the following short cut keys to expand all in a file:

CTRL-M + CTRL-L

Give it a go! Or better yet, disable all code folding by default:

Text Editor -> C# -> Advanced. Uncheck “Enter outlining mode when files

Go to Text Editor->C#->Advanced. Under the “Outlining” section, uncheck the option labelled “Enter outlining mode when files open”.