Blazor ICalendar

A Blazor ICalendar control that uses the Ical.Net package.

ICalendar is a file specification for calendar information, that is supported by many calendar applications (e.g. Outlook, Google, Apple). It uses a .ics extension.

This library uses the Ical.Net package to handle the ICalendar logic and then creates an anchor tag (a) with a data-url that contains the .ics file.

If a user clicks the link, the browser will download the .ics file - this file if opened will usually add a calendar entry to the user's preferred calendar.

Usage

There are two components in the library: <ICalendar> which takes a Ical.Net.Calendar object as the data source, and <ICalendarQuick> for simple scenarios with dates and descriptions.

ICalendar

Example:

<ICalendar Calendar=@myCal Filename="example.ics">Add to Calendar</ICalendar>

Note that both components render as anchor tags <a> so the content is the link content. The C# code behind this is as follows:

   Calendar myCal;
    
   protected override void OnInitialized()
   {
      var start = DateTime.Now.AddHours(1);
      var end = start.AddHours(1);
      var e = new CalendarEvent
            {
                Start = new CalDateTime(start),
                End = new CalDateTime(end),
                Description = "test1",
                Summary = "Name"
            };
      myCal = new Calendar();
      myCal.Events.Add(e);
   }

Note that if the Calendar parameter is not set, the link will not be rendered.

ICalendarQuick

Example:

<ICalendarQuick Start=@start End=@end Filename="quick.ics"
                Description="detail goes here" 
                Summary="Appointment name">Add to Calendar</ICalendarQuick>

Both the Start and End must be set for the link to show.

Code behind just sets the two times:

   DateTime start = DateTime.Now.AddHours(1);
   DateTime end = DateTime.Now.AddHours(2);