something like this
.NET Decompiler: Decompile Any .NET Code | .NET Reflector[
^] might help you. Before you use that, and 'ymmv', and even more importantly, I'd suggest you teach yourself how to use a source control/repository system and/or even take simple zip backups offline of your solution/source
Dont gimme cr@p about things like git for example being 'too hard' - if you dont like command-line, use Atlassian's SourceTree (FREE) product