"https://www.***.com/phoenix/views/akgCharts/zoomAkgChart.jsp?&date=20130502&time=123000",

System.Net.WebClient _wclient = new System.Net.WebClient();
_wclient.DownloadFile("https://www.***.com/phoenix/views/akgCharts/zoomAkgChart.jsp?&date=20130502&time=123000",", @"c:MedicalReport_" + DateTime.Now + ".pdf");