You need to use the class
System.Net.HttpWebRequest using HTTP request method "GET" (which is the default). Compile-time error will be of the type
System.Net.WebRequest though as the run-type will be determined based on URL by the call to the factory method System.Net.WebRequest.Create
See:
http://msdn.microsoft.com/en-us/library/system.net.httpwebrequest.aspx[
^],
http://msdn.microsoft.com/en-us/library/system.net.webrequest.aspx[
^] (see the code sample here).
You need to get response stream and process it. It will return you the HTML file which you can parse and extract the data you need. You also need to learn how to pass a request to Google. You can do it just by experimenting with Google, looking at generated request URLs, etc. By the way, Google search API is now deprecated, to best of my knowledge.
—SA
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