Extracting an image from WebBrowser

I want to extract an image from WebBrowser and I don't want to download it because some server don’t let download to non-browsers.
Does method for this operation?

First of all you need to get the image url. To retrieve this you can use Regex, or HTMLAgilityPack or etc. 
than you can download it from the url of the image as:
public static void DownloadImageWithWebclient(string url)
try
string filename = System.IO.Path.GetFileName(new Uri(url).LocalPath);
var _client = new WebClient();
_client.DownloadFileAsync(new Uri(url), filename);
catch
There are many alternative ways of downloading such as non async. 
Also, you can set webclient headers and useragent to responde to the target website as a browser in order to avoid being blocked your request. 

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