C# - issue with proxy check

Question

I have been trying to make a simple proxy checker...

WebProxy myProxy = default(WebProxy);
foreach (string proxy in Proxies)
{
    try
    {
        myProxy = new WebProxy(proxy);
        HttpWebRequest r = HttpWebRequest.Create("<a href="http://www.google.com"" rel="nofollow">http://www.google.com"</a>);
        r.UserAgent = "Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.2 Safari/537.36";
        r.Timeout = 3000;
        r.Proxy = myProxy;
        HttpWebResponse re = r.GetResponse();
        Console.WriteLine($"[+] {proxy} Good", ConsoleColor.Green);
    }
    catch (Exception)
    {
        Console.WriteLine($"[-] {proxy} Bad", ConsoleColor.Red);
    }
}

for some reason this line:

HttpWebRequest r = HttpWebRequest.Create("<a href="http://www.google.com"" rel="nofollow">http://www.google.com"</a>);

I see a little red line under the http, and this is the error I get

The best overload for Create does not have a parameter names http

How can I fix it? and I how can I make it check proxies reall fast, not like 1 proxy every 5 seconds

Answer 1

The HttpWebRequest class's Create method takes the URL as a string, not HTML:

HttpWebRequest r = HttpWebRequest.Create("http://www.google.com");

Since there's actually no Create on HttpWebRequest, but only on WebRequest, your code is most likely actually this:

HttpWebRequest r = WebRequest.Create("http://www.google.com");

But what you want is this:

HttpWebRequest r = (HttpWebRequest)WebRequest.Create("http://www.google.com");