is c# all about windows form

Question

Good day to you all.
Finally am in here, several times i'd tried login but it will not.
lately I just got this greate feeling that I need to be a programmer or developer then I choose C# as my language and nicely am getting to know it, now I can write a simple windows application using Windows form, but is that all it takes to be a good/great programmer? am thinking of learning ASP .NET alongside, will that be a good idea? please can someone help me with ideas, advice, materials?