1.in the developpement of asp.net, whant's the differences between create a "web application" and "website", i dont kown whicn way should i use when creating an asp.net application.
2.what's the differences in .net 2.0,3.0...etc, i mean when i developp un asp.net app with vs2008 .net 2.0,and when i want to use vs2012 to open it,is there any probleme? and i use vs2012 to change the app target to .net 4.5 for example, is there any problem? i dont kown the difference beteween them..
3.last question, if i publish an app done by vs 2008 .net 2.0, if i want to update the app in vs2012, how should i do to make it works well in my server, in my vs 2012, is it possible to change framework from 2.0 to 4.5? .i am biginner, so answer me more as u can please.thanks in advance