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کد:
string getTwitterUserImage(string userUrl)

        {

            try

            {

                // The initial Twitter URL

                string twitterUrl = userUrl;

                HttpWebRequest myRequest = (HttpWebRequest)HttpWebRequest.Create(twitterUrl);

                myRequest.Method = "GET";

                HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();

                StreamReader myPageSource = new StreamReader(myResponse.GetResponseStream());

                string source = myPageSource.ReadToEnd();

                myResponse.Close();



                // The set of selections that will be

                // used to select the needed part from

                // the HTML source of the user page.

                int selectionA = 0;

                int selectionB = 0;

                int selectionC = 0;



                selectionA = source.IndexOf("<img alt=\"\" border=\"0\" height=\"73\" id=\"profile-image\"");

                selectionB = source.IndexOf("src=", selectionA);

                selectionC = source.IndexOf("valign=\"middle\"", selectionB + 4);



                // Extract the image URL from the source selection.

                string fullUrl = source.Substring(selectionB + 5, selectionC - 7 - selectionB);

                return fullUrl;

            }

            catch (Exception exc)

            {

                return null;

            }

}