fetching the items from a quick launch bar in sharepoint

[GeneralPublic]

I have a thing to do..Retrieve/fetch/get the items from the quicklaunch bar of sharepoint, programmatically. That is, all the quicklaunch bar items such as -lists, calendars, announcements etc of a particular site to be retrieved programmatically. Need to do it in asp.net.kindly provide with some help. I am new to it.