I always find myself needing to enclose a block of code in curly braces { }, but unfortunately that isn't included in the C# surround code snippets, which seems to be an oversight. I couldn't find anything on building your own surround snippets either (just other kinds of snippets).
I am actually running Resharper too, but it doesn't seem to have this functionality either (or I haven't figured how to activate it).
We have a coding standard of including even a single line of code after an if or else in curly braces, so if I could just make Resharper do that refactoring automatically that would be even better!