Save an Outlook appointment from ASP.NET

Outlook supports import/export operation via a file format called vCalendar. vCalendar files are standardized text files that contain all the information held inside an appointment. What’s important for us (as asp.net developers) is that outlook will open vCalendar files (.vcs) when signaled to do so from a web browser. But first things first, here’s the format for the vCalendar file.