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How to filter Calendar events in Xamarin.Forms?

2 mins read

Xamarin Calendar allows you to filter the events in month view based on your requirement.

This article explains you how to filter the calendar events in month view using SfComboBox by searching the subject.

To filter the events by searching subject, set the DisplayMemberPath of SfComboBox as event’s subject and bind DataSource as calendar event.

 <?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns=""
    <Grid x:Name="MainLayout" Padding="0,20,0,0">
            <RowDefinition Height="0.1*"/>
            <RowDefinition Height="0.9*"/>
        <combobox:SfComboBox Grid.Row="0" BorderColor="Blue" ShowDropDownHeaderView="true" 
                             IsEditableMode="true" HeightRequest="40" DisplayMemberPath="Subject" x:Name="comboBox">
        <syncfusion:SfCalendar Grid.Row="1" x:Name="calendar">


By using the SelectionChanged event of SfComboBox, you can set the filtered event source to SfCalendar DataSource.

namespace FilteringEvents
    public class CalendarBehavior: Behavior<ContentPage>
        private SfCalendar calendar;
        private SfComboBox comboBox;
        private CalendarEventCollection calendarInlineEvents = new CalendarEventCollection();
        public CalendarBehavior()
        protected override void OnAttachedTo(ContentPage bindable)
            var page = bindable as Page;
            calendar = page.FindByName<SfCalendar>("calendar");
            comboBox = page.FindByName<SfComboBox>("comboBox");
            // To display inline appointment layout.
            calendar.ShowInlineEvents = true;
            calendar.InlineViewMode = InlineViewMode.Agenda;
            var currentDay = DateTime.Now.Date;
            for (int i = 0; i < 10; i++)
                calendarInlineEvents.Add(new CalendarInlineEvent()
                    StartTime = currentDay.AddDays(i),
                    EndTime = currentDay.AddDays(i),
                    Subject = "Meeting on " + currentDay.AddDays(i).ToString("dd/MM/yy"),
                    Color = Color.Fuchsia
                calendarInlineEvents.Add(new CalendarInlineEvent()
                    StartTime = currentDay.AddDays(i),
                    EndTime = currentDay.AddDays(i),
                    Subject = "Conference on " + currentDay.AddDays(i).ToString("dd/MM/yy"),
                    Color = Color.Fuchsia
            // Setting data source for 3 months.
            calendar.DataSource = calendarInlineEvents;
            // Setting data dource for combo box
            comboBox.DataSource = calendarInlineEvents;
            // Displaying data in combo box based on subject
            comboBox.DisplayMemberPath = "Subject";
            comboBox.SelectionChanged += ComboBox_SelectionChanged;
        protected override void OnDetachingFrom(ContentPage bindable)
            comboBox.SelectionChanged -= ComboBox_SelectionChanged;
        /// <summary>
        /// Gets the appointments based on subject.
        /// </summary>
        /// <returns>The appointments.</returns>
        /// <param name="subject">Subject.</param>
        private CalendarEventCollection GetAppointments(string subject)
            var data = new CalendarEventCollection();
            foreach (var item in calendarInlineEvents)
                if (item.Subject == subject)
            return data;
        /// <summary>
        /// Combo box selection is changed.
        /// </summary>
        /// <param name="sender">Sender.</param>
        /// <param name="e">E.</param>
        private void ComboBox_SelectionChanged(object sender, Syncfusion.XForms.ComboBox.SelectionChangedEventArgs e)
            // Returning when value is cleared in combo box.
            if ((e.Value as CalendarInlineEvent) == null || String.IsNullOrEmpty((e.Value as CalendarInlineEvent).Subject))
            // Setting calendar data source based on subject filtered data.
            calendar.DataSource = GetAppointments((e.Value as CalendarInlineEvent).Subject);
            calendar.MoveToDate = GetAppointments((e.Value as CalendarInlineEvent).Subject)[0].StartTime;

Sample Demo:  FilterCalendarEvents

I hope you enjoyed learning on how to filter Calendar events in Xamarin.Forms.
You can refer to our Xamarin.Forms Calendar feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our Xamarin.Forms Calendar example to understand how to create and manipulate data.
For current customers, you can check out our components from the License and Downloads page. If you are new to Syncfusion, you can try our 30-day free trial to check out our other controls.
If you have any queries or require clarifications, please let us know in the comments section below. You can also contact us through our support forumsDirect-Trac, or feedback portal. We are always happy to assist you!

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