Question

I have a web browser project in C#, I am thinking such system; when user writes the url then clicks “go” button, my browser get content of written web site ( it shouldn’t visit that page, I mean it shouldn’t display anything), then I want look for a specific “keyword” for ex; “violence”, if there exists, I can navigate that browser to a local page that has a warning. Shortly, in C#, How can I get content of a web site before visiting?…

Sorry for my english,
Thanks in advance!

Answer 1

You have to use WebRequest and WebResponse to load a site:

example:

string GetPageSource (string url)
{
HttpWebRequest webrequest = (HttpWebRequest)WebRequest.Create(url);
webrequest.Method = "GET";
HttpWebResponse webResponse = (HttpWebResponse)webrequest.GetResponse();
string responseHtml;
using (StreamReader responseStream = new StreamReader(webResponse.GetResponseStream()))
{
    responseHtml = responseStream.ReadToEnd().Trim();
}

return responseHtml;
}

After that you can check the responseHtml for some Keywords… for example with RegEx.