winform HttpWebResponse 假死

                    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(link);                    request.Timeout = 100000;                    request.Credentials = CredentialCache.DefaultCredentials;                    RequestState myRequestState = new RequestState();
                    myRequestState.Request = request;
                    myRequestState.parent = this;                    //IAsyncResult result = (IAsyncResult)request.BeginGetResponse(new AsyncCallback(RequestState.RespCallback), myRequestState);                    HttpWebResponse response = (HttpWebResponse)request.GetResponse();到这一步就会出现假死，UI都不会动！请教各位高手，有什么好的方法能够解决！