>Thank you for our explanation about hte case of WPF/Silverlight, but in the case of developing for windows of asp.net ic an inherits at least by code for an user control
>I said this because in VFP you not only inherits the appearance but the code too, i want to know if it is true in asp.net and windows case and if there is any sample code or article you can recommend me about this.
It's possible in WinForms. This is probably a good simple example:http://www.youtube.com/watch?v=hagf4VxgLSI
Whether it is a good idea or not is a different matter. And if you find yourself favouring WinForms over WPF simply because of this then it will be because you are trying to shoehorn a VFP paradigm into a .NET technology that is not designed to work that way.
ASP.NET is again different. An ASP.NET 'Page' is a *very* different thing to a 'Form' (whether you are talking about VFP,WinForms or WPF) and you should maybe not even think of it in those terms. Take a look at this:http://www.4guysfromrolla.com/articles/041305-1.aspx