private void Guncelle(bool indir = true) { if (indir) { using (WebClient kurDownload = new WebClient()) { kurDownload.DownloadFile("https://www.tcmb.gov.tr/kurlar/today.xml", Application.StartupPath + "\\Kurlar.xml"); } lblUyari2.Text = "Son Güncelleme Tarihi : " + DateTime.Now.ToString(); } ExchangeTool doviz = new ExchangeTool(); gridControDoviz.DataSource = doviz.DovizKuruCek(); }