Does anyone know if it is possible to have resharper force the use of the this keyword when it can be used? For fields and such...
Resharper is capable of showing where
In ReSharper Options, under Code Editing -> C# -> Code Style there is an option for Use "this." qualifier for that you can set for fields, properties, events, and methods.
Checkout the StyleCop for Resharper plugin (part of the StyleCop project).
You can then set the "default" severity for StyleCop to Error (or just this particular rule) and it will appear in the R# "files with errors" area inside Visual Studio.