where i can find all the source code for VB net and C# winforms and asp net

Question

Hi there Microsoft where i can find all the source codes to develop full apps for asp net web forms and winforms

what i see on the microsoft is just few codes and do not have what i m looking for

could you add one site from A to Z with all source codes needs to to develop the apps we need

i did check and search on microsoft website do not have all source codes just few lines of code