Is there an equivalent to browser cookies for Smart Client / Click Once application development on .NET 3.5? Some place I can store cookies on the user's machine rather than the server.
Or to put it another way - what file location can you write to from a sandboxed Click-Once app that won't violate good security practices. I don't want to take the app out of the sandbox and run with elevated privileges if I don't have to.
Have a look at isolated storage. Here's a specific blog post for ClickOnce apps.