In wordpress there are some error free ways to add scripts and styles
in your custom  page in admin dashboard.If you don't follow these rules you
might see errors and it's not a good idea to declare script and styles without
this kind of some pre-defined actions.

to display the help and let the users easily get help
whenever they need it you can call the Help.ShowHelp
method in your form.

Nowadays, facebook became the best social media  to promote businesses and for personal interest.
Many websites using facebook like button in every pages to make their site more social and got around.

Asp.net caching helps you to create high performance applications.
you can cache objects like DataSets,or your created objects.you can
also do page level caching if you used user controls in the page
if your aspx page includes lots of work.

It's a good idea to use a class say gateway where all
database access codes will be written.in this gateway class
you will implement db connection as follows -

first create another class -

It's possible to insert any kind of content in wordpress post or page using
short codes, but if you want to inject/modify content in post in more
advanced manner then there is a alternative is using filter

following are guidelines to develop modules
for dotnetnuke 5/6 with visual studio 2008/2010 -