Data from a given website and use it in our application

We know that Internet is huge repository of data, there may be requirement to some of our applications where we need to get the data from a given website and use it in our application. How to implement this requirement? Use HttpClient? Are there no other easy ways to do this job - There are many third party tools to do this, the one I like most is - WEBHARVEST. A simple XML file with XQuery expressions will do the job.


http://web-harvest.sourceforge.net/