to extract the data from a website(www.shopzilla.com,www.shopping.com) and store it in my applications database

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C#

hi...I am familiar with C# programming language.I am a newB in C#.net programming.
I like to extract the data from a website(www.shopzilla.com, www.shopping.com) and store it to my database running on my machine.

Is that possible in c#. If so which API I should use.
for example, i want to fetch price and retailer name of any product and store it into my database using c#.net.Can anyone tell me how to implement this in C#.net..

thanks in advance