Library to parse and manipulate ICS files based on RFC5545

Why

This C# library was specifically developed for reading and manipulating RFC5545 iCalendar (ICS) files, with a primary focus on server-side applications, such as calendar servers. The goal was to create a robust and permissive library that can handle the many quirks and non-compliant behaviors of various calendar clients in the wild.

• Permissive Parsing: The library is built to be tolerant of malformed or non-standard ICS data, allowing it to successfully parse files from as many different clients as possible.

• Timezone Handling: Accurate handling of timezones is crucial for international scheduling. This library includes a dedicated and robust system for processing timezone definitions to ensure events are displayed correctly for users across the globe.

• Modern Feature Support: This includes support for the components VAvailability (RFC 7953), which is helpful for free/busy scheduling, and VPoll (RFC 9073), which enables calendar-based polling and voting features.

• This library is not intended for client-side use, such as creating new events or managing a user's local calendar.

Install

Installation is simple, just install via

dotnet add package ClosureOSS.Calendare.VSyntaxReader

Usage

Refer to the examples in the VSyntaxReader.Examples folder.

Scope

Supported RFC's

• Internet Calendaring and Scheduling Core Object Specification (iCalendar)
• Parameter Value Encoding in iCalendar and vCard