How to get page meta (title, description, images) like facebook attach url using Regex in .NET

using WebClient client = new WebClient();
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var data = client.DownloadString(url);

then using Regex to retrieve metadata (title, description, images) like facebook url attach, but I don't know how to write Regex.

Any help?

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Try using Html Agility Pack instead of regex. Explanation

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Can you please put the code if you have done it. I am bit confused with HTML Agility pack, as i am not able to find an example where i can simply extra title, description & give user choice to select and image from a particular URL