A few days ago, I posted this question and this question asking about how to post "Hello World" to twitter. I've gotten helpful responses, which have propelled me further along, but I'm still lost.
I need to use OAuth because (as I read it) using username and password is going to be deprecated soon.
I need an example as simple as updating the status with the string constant 'Hello World!'.
My client is specifying that I must use C#.