Generating Outlook Calendar with timezone difference

Question

User69488508 posted

Hi:

I am able to generate a calendar successfully however, if someone from a different timezone accepts it does not adjust to their timezone.  Does anyone know how I can compensate for this in the following code?

TrainingStart = Convert.ToDateTime(ReturnValue4);

            TrainingEnd = TrainingStart.AddMinutes(30);

            //Initialization
            MemoryStream mStream = new MemoryStream();
            StreamWriter sw = new StreamWriter(mStream);
            sw.AutoFlush = true;

            //Header
            sw.WriteLine("BEGIN:VCALENDAR");
            sw.WriteLine("VERSION:2.0");
            sw.WriteLine("PRODID:-//Flo Inc.//FloSoft//EN");
            sw.WriteLine("BEGIN:VEVENT");

            //Body

            sw.WriteLine("DTSTART:" + TrainingStart.ToString("s"));
            sw.WriteLine("DTEND:" + TrainingEnd.ToString("s"));
            sw.WriteLine("LOCATION:" + Location);
            sw.WriteLine("X-ALT-DESC;FMTTYPE=text/html:" + Description.Replace("\n", " "));

            sw.WriteLine("SUMMARY:" + Subject);


            //Footer
            sw.WriteLine("PRIORITY:" + Priority);
            sw.WriteLine("END:VEVENT");
            sw.WriteLine("END:VCALENDAR");



            //Make it Downloadable
            Response.Clear();
            Response.AppendHeader("Content-Disposition", "attachment; filename=Add2Calendar.ics");
            Response.AppendHeader("Content-Length", mStream.Length.ToString());
            Response.ContentType = "html/x-vCalendar";
            //Response.ContentType = "application/download";
            Response.BinaryWrite(mStream.ToArray());
            Response.End();
            sqlcon.Close();

Answer 1

User69488508 posted

Unfortunately this issue is still unresolved.  This is the code i have now.  A clause for each Timezone however they are off by 1 hour.  Not sure what i am missing.

if (trainingtimezone.Equals("(EST)"))
            {
   
                //Initialization
                MemoryStream mStream = new MemoryStream();
                StreamWriter sw = new StreamWriter(mStream);
                sw.AutoFlush = true;

                //Header
                sw.WriteLine("BEGIN:VCALENDAR");
                sw.WriteLine("VERSION:2.0");
                sw.WriteLine("PRODID:-//Flo Inc.//FloSoft//EN");
                sw.WriteLine("BEGIN:VEVENT");

                //Body
             
                sw.WriteLine("DTSTART;TZID=US/Eastern:" + TrainingStart.ToString("s"));
                sw.WriteLine("UTC-OFFSET:-0500");
                sw.WriteLine("DTEND;TZID=US/Eastern:" + TrainingEnd.ToString("s"));
                sw.WriteLine("LOCATION:" + Location);
                sw.WriteLine("X-ALT-DESC;FMTTYPE=text/html:" + Description.Replace("\n", " "));

                sw.WriteLine("SUMMARY:" + Subject);


                //Footer
                sw.WriteLine("PRIORITY:" + Priority);
                sw.WriteLine("END:VEVENT");
                sw.WriteLine("END:VCALENDAR");



                //Make it Downloadable
                Response.Clear();
                Response.AppendHeader("Content-Disposition", "attachment; filename=Add2Calendar.ics");
                Response.AppendHeader("Content-Length", mStream.Length.ToString());
                Response.ContentType = "html/x-vCalendar";
             
                Response.BinaryWrite(mStream.ToArray());
                Response.End();

            }