Export all events to iCal format programmatically

We all know about iCal format which is used to import the Calendar items to Outlook. We can able to export a single item to iCal using OOTB. But we doesn't have the option to get all the events in single .ics file. Here i am going to provide a code base to export all the events as .ics format

 StringBuilder sw = new StringBuilder();
                sw.AppendLine("BEGIN:VCALENDAR");
                sw.AppendLine("VERSION:2.0");
                sw.AppendLine("METHOD:PUBLISH");
                foreach (var item in items)
                {

                    sw.AppendLine("BEGIN:VEVENT");
                    sw.AppendLine("CLASS:PUBLIC");
                    sw.AppendLine(string.Format("CREATED:{0:yyyyMMddTHHmmss}", DateTime.UtcNow));
                    sw.AppendLine("DESCRIPTION: " + Convert.Tostring(item["Description"]));
                    sw.AppendLine(string.Format("DTEND:{0:yyyyMMddTHHmmss}", Convert.ToDateTime(item[EndDate]));
                    sw.AppendLine(string.Format("DTSTART:{0:yyyyMMddTHHmmss}", Convert.ToDateTime(item[StartDate]));
                    sw.AppendLine("SEQUENCE:0");
                    sw.AppendLine("UID:" + Guid.NewGuid().ToString());
                    sw.AppendLine("LOCATION:" + Convert.ToString(item["Location"]));
                    sw.AppendLine("SUMMARY;LANGUAGE=en-us:" + Convert.ToString(item["Title"]));
                    sw.AppendLine("END:VEVENT");
                }
                sw.AppendLine("END:VCALENDAR");

                Page.Response.Clear();
                Page.Response.ContentType = "text/calendar";
                Page.Response.AddHeader("content-disposition", "inline; filename=" + "Test.ics");
                Page.Response.Write(sw.ToString());
                Page.Response.Flush();

Put the above code base in your webpart. Then iCal format will work like an awesome.