How to get fast response from a website

See more:

C#

.NET

.NET4

webservice

Hi Everyone....

I have a listview of htmltags(Links). I want to get response from every item of that listview .

when I start looping then my UI was not responding .
My code is..

foreach (ListViewItem list in listView1.Items)
           {
               bool respond = checkrequest(list.Text);
               if (respond == true)
                   Do something......
               else others......
           }

public bool checkrequest(string url)
        {
            try
            {
                WebRequest webrequest =HttpWebRequest.Create(url);
                WebResponse webresponse;
                try
                {
                    webresponse = (HttpWebResponse)webrequest.GetResponse();
                }
                catch (Exception)
                {
                    return false;
                }
            }
            catch 
            {               
            }
            return true;
        }

IT takes too much time to get respond . Exception occur for Timeout .

how can i make my UI alive ? and make my program faster of getting Respose from any website .


Thank You