/// <summary>
        /// Most important method in application
        /// Is responsible for coordinating every class
        /// 1. Prepares field for making web request.
        /// 2. Constantly updates itself in infobox
        /// 3. Creates new instance of WebSite and serves requests
        /// 4. If there is internet connection takes source code and gives it to Parser to find all correct images links
        /// 5. Makes grid to show images
        /// 6. Allows images to be downloaded from WEB.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void WebRequest(object sender, RoutedEventArgs e)
        {
            //Prepare application windows for new request.
            ClearGrid(Cells);

            //Inform about start of process.
            InfoBoxLabel.Background = System.Windows.Media.Brushes.White;
            InfoBoxLabel.AppendText("Wysyłam żądanie...\n");
            InfoBoxLabel.ScrollToEnd();

            //Take address from address bar.
            WebSite WebSite = new WebSite(SiteAdressTextBox.Text);

            //Verify correctness of web address
            Parser.ValidateWebAddress(WebSite.WebSiteAddress.ToString());
            InfoBoxLabel.AppendText("Adres internetowy został zweryfikowany...\n");
            InfoBoxLabel.ScrollToEnd();

            //When there is internet connection.
            if (Connections.HasInternetConnection())
            {
                InfoBoxLabel.AppendText("Wykryto połączenie internetowe...\n");
                InfoBoxLabel.ScrollToEnd();

                //Check if website is available (can I ping it?)
                if (WebSite.IsWebSiteAvailable(WebSite.WebSiteAddress) == true)
                {
                    //If there was response from website...
                    InfoBoxLabel.AppendText("Nawiązano połączenie ze stroną...\n");
                    InfoBoxLabel.ScrollToEnd();

                    //Get Source Code of website (HTML document only)...
                    WebSite.GetWebsiteSourceCode();
                    //...and inform user about success
                    InfoBoxLabel.AppendText("Kod strony pobrano pomyślnie...\n");
                    InfoBoxLabel.ScrollToEnd();

                    //Having document, Parse it and tame all image links from it.
                    WebSite.RetrieveImageLinks(WebSite.WebSiteAddress);

                    //Update information about needed cells to dynamically create in GRID
                    Cells = FindAllImages.ListOfDistinctMatches.Count;
                    if (Cells > 0)
                    {
                        //Prepare GRID layout to further display
                        MakeGrid(Cells);
                        //Take all links and fill grid with it's content
                        FillGrid(Cells);
                        //Enable second button
                        DownloadAllButon.IsEnabled = true;
                    }
                }

                //Can't ping website
                else
                {
                    //Inform user about failure
                    InfoBoxLabel.AppendText("Brak odpowiedzi od serwera\n");
                    InfoBoxLabel.ScrollToEnd();
                    //Change box color to draw attention of user
                    InfoBoxLabel.Background = System.Windows.Media.Brushes.Crimson;
                }
            }

            else
            {
                //Very angry color to force user to buy the internet (or correct it's connection)
                InfoBoxLabel.Background = System.Windows.Media.Brushes.Crimson;
                //Short info about "obstacle"
                InfoBoxLabel.AppendText("Brak połączenia internetowego...\n");
                InfoBoxLabel.ScrollToEnd();
            }
        }
 /// <summary>
 /// Inform user about completed download
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 private void CompletedOneImage(object sender, AsyncCompletedEventArgs e)
 {
     InfoBoxLabel.AppendText("Plik został pobrany...\n");
     InfoBoxLabel.ScrollToEnd();
     //throw new NotImplementedException();
 }