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Slot Templates

You can use the SlotTemplate and the AllDaySlotTemplate to customize the rendering of the slots in the Scheduler.

AllDaySlotTemplate

Use the AllDaySlotTemplate to provide a custom rendering for the cells in the Telerik Scheduler for Blazor that span across a full day. This template can be defined for the Day, Multiday, and Week Scheduler views.

The context of the template is a SchedulerAllDaySlotTemplateContext object that contains:

Property Type Description
Start DateTime The slot's start time.
End DateTime The slot's end time.
Resources List<KeyValuePair<string, object> A collection of resources for which the slot is defined. The collection is populated when the Resources and Resource Grouping features are used.

SlotTemplate

Use the SlotTemplate to provide a custom rendering for the cells in the Telerik Scheduler for Blazor. This template can be defined for the Day, Multiday, Month, Timeline, and Week Scheduler views.

The context of the template is a SchedulerSlotTemplateContext object that contains:

Property Type Description
Start DateTime The slot's start time.
End DateTime The slot's end time.
Resources List<KeyValuePair<string, object> A collection of resources for which the slot is defined. The collection is populated when the Resources and Resource Grouping features are used.

When you use the SlotTemplate in the Timeline Scheduler view, and the content of the template is not a plain string, you must add the !k-pos-absolute built-in class to the custom element.

Example

@* Use the AllDaySlotTemplate and SlotTemplate *@

<TelerikScheduler @bind-Date="@SelectedDate" Height="600px" Data="@Data"
                  @bind-View="@CurrView"
                  OnCreate="@AddAppointment"
                  OnUpdate="@UpdateAppointment"
                  OnDelete="@DeleteAppointment"
                  AllowDelete="true"
                  AllowUpdate="true"
                  AllowCreate="true">
    <ItemTemplate>
        <div class="scheduler-set-item-template">S.Item: @(((Appointment)context).Title)</div>
    </ItemTemplate>
    <AllDayItemTemplate>
        <div class="scheduler-set-all-day-item-template">S.AllDayItem: @(((Appointment)context).Title)</div>
    </AllDayItemTemplate>
    <SchedulerViews>
        <SchedulerDayView>
            <SlotTemplate>
                @if (context.Start.TimeOfDay >= ControlDate.TimeOfDay
                && context.End.AddSeconds(-1).TimeOfDay <= ControlDate.AddHours(1).TimeOfDay)
                {
                    <div style="color: green;"><TelerikIcon Icon="pause"></TelerikIcon>Lunch Break</div>
                }
            </SlotTemplate>
            <AllDaySlotTemplate>
                <div style="color: blue;">AllDay SlotTemplate</div>
            </AllDaySlotTemplate>
            <ItemTemplate>
                <div class="view-set-item-template">V.Item: @(((Appointment)context).Title)</div>
            </ItemTemplate>
        </SchedulerDayView>
        <SchedulerWeekView>
            <SlotTemplate>
                @if (context.Start.TimeOfDay >= ControlDate.TimeOfDay
                && context.End.AddSeconds(-1).TimeOfDay <= ControlDate.AddHours(1).TimeOfDay)
                {
                    <div style="color: green;"><TelerikIcon Icon="pause"></TelerikIcon>Lunch Break</div>
                }
            </SlotTemplate>
            <AllDaySlotTemplate>
                <div style="color: blue;">AllDay week SlotTemplate</div>
            </AllDaySlotTemplate>
        </SchedulerWeekView>
        <SchedulerMonthView>
            <SlotTemplate>
                @{
                    var dayNumber = context.Start.Day;
                    <span class="k-link" @onclick="() => OnDateClick(dayNumber)">
                        @context.Start.Day
                    </span>

                    if (context.Start.DayOfWeek == DayOfWeek.Saturday
                    || context.Start.DayOfWeek == DayOfWeek.Sunday)
                    {
                        <div style="color: green;"><span>Free Weekend</span></div>
                    }
                }
            </SlotTemplate>
            <ItemTemplate>
                <div class="view-set-item-template">V.Item: @(((Appointment)context).Title)</div>
            </ItemTemplate>
        </SchedulerMonthView>
        <SchedulerTimelineView>
            <SlotTemplate>
                @if (context.Start.Day % 2 == 0)
                {
                    <div style="color: green;">Workout Day</div>
                }
                else
                {
                    <div>Rest Day</div>
                }
            </SlotTemplate>
            <ItemTemplate>
                <div class="view-set-item-template">V.Item: @(((Appointment)context).Title)</div>
            </ItemTemplate>
        </SchedulerTimelineView>
    </SchedulerViews>
</TelerikScheduler>
@code
{
    private DateTime SelectedDate { get; set; } = new DateTime(2019, 11, 11, 6, 0, 0);
    private DateTime ControlDate { get; set; } = new DateTime(2000, 1, 1, 12, 0, 0);
    private SchedulerView CurrView { get; set; }
    List<Appointment> Data = new List<Appointment>();

    protected override void OnInitialized()
    {
        Data = AppointmentService.GetAppointments();

        base.OnInitialized();
    }

    private void UpdateAppointment(SchedulerUpdateEventArgs args)
    {
        Appointment item = (Appointment)args.Item;

        var matchingItem = Data.FirstOrDefault(a => a.Id == item.Id);

        if (matchingItem != null)
        {
            matchingItem.Title = item.Title;
            matchingItem.Description = item.Description;
            matchingItem.Start = item.Start;
            matchingItem.End = item.End;
            matchingItem.IsAllDay = item.IsAllDay;
        }
    }

    private void OnDateClick(int day)
    {
        var currentDate = DateTime.Now;
        var navigateDate = new DateTime(currentDate.Year, currentDate.Month, day);

        CurrView = SchedulerView.Day;
        SelectedDate = navigateDate;
    }

    private void AddAppointment(SchedulerCreateEventArgs args)
    {
        Appointment item = args.Item as Appointment;

        Data.Add(item);
    }

    private void DeleteAppointment(SchedulerDeleteEventArgs args)
    {
        Appointment item = (Appointment)args.Item;

        Data.Remove(item);
    }

    private class AppointmentService
    {
        public static async Task<List<Appointment>> GetAppointmentsAsync()
        {
            await Task.Delay(100);

            return GetAppointments();
        }

        public static List<Appointment> GetAppointments()
        {
            List<Appointment> data = new List<Appointment>();
            DateTime baselineTime = GetStartTime();

            data.Add(new Appointment
                {
                    Title = "Vet visit",
                    Description = "The cat needs vaccinations and her teeth checked.",
                    Start = baselineTime.AddHours(2),
                    End = baselineTime.AddHours(2).AddMinutes(30)
                });

            data.Add(new Appointment
                {
                    Title = "Trip to Hawaii",
                    Description = "An unforgettable holiday!",
                    IsAllDay = true,
                    Start = baselineTime.AddDays(-10),
                    End = baselineTime.AddDays(-2)
                });

            data.Add(new Appointment
                {
                    Title = "Jane's birthday party",
                    Description = "Make sure to get her fresh flowers in addition to the gift.",
                    Start = baselineTime.AddDays(5).AddHours(10),
                    End = baselineTime.AddDays(5).AddHours(18),
                });

            data.Add(new Appointment
                {
                    Title = "One-on-one with the manager",
                    Start = baselineTime.AddDays(2).AddHours(3).AddMinutes(30),
                    End = baselineTime.AddDays(2).AddHours(3).AddMinutes(45),
                });

            data.Add(new Appointment
                {
                    Title = "Brunch with HR",
                    Description = "Performance evaluation of the new recruit.",
                    Start = baselineTime.AddDays(3).AddHours(3),
                    End = baselineTime.AddDays(3).AddHours(3).AddMinutes(45)
                });

            data.Add(new Appointment
                {
                    Title = "Interview with new recruit",
                    Description = "See if John will be a suitable match for our team.",
                    Start = baselineTime.AddDays(3).AddHours(1).AddMinutes(30),
                    End = baselineTime.AddDays(3).AddHours(2).AddMinutes(30)
                });

            data.Add(new Appointment
                {
                    Title = "Conference",
                    Description = "The big important work conference. Don't forget to practice your presentation.",
                    Start = baselineTime.AddDays(6),
                    End = baselineTime.AddDays(11),
                    IsAllDay = true
                });

            data.Add(new Appointment
                {
                    Title = "New Project Kickoff",
                    Description = "Everyone assemble! We will also have clients on the call from a later time zone.",
                    Start = baselineTime.AddDays(3).AddHours(8).AddMinutes(30),
                    End = baselineTime.AddDays(3).AddHours(11).AddMinutes(30)
                });

            data.Add(new Appointment
                {
                    Title = "Get photos",
                    Description = "Get the printed photos from last week's holiday. It's on the way from the vet to work.",
                    Start = baselineTime.AddHours(2).AddMinutes(15),
                    End = baselineTime.AddHours(2).AddMinutes(30)
                });

            var rng = new Random();
            var startDate = new DateTime(2019, 11, 10);


            return data;
        }

        public static DateTime GetStartTime()
        {
            DateTime dt = new DateTime(2019, 12, 11);
            int daysSinceMonday = dt.DayOfWeek - DayOfWeek.Monday;
            return new DateTime(dt.Year, dt.Month, dt.Day - daysSinceMonday, 8, 0, 0);
        }
    }

    private class Appointment
    {
        public Guid Id { get; set; }

        public string Title { get; set; }

        public DateTime Start { get; set; }

        public DateTime End { get; set; }

        public bool IsAllDay { get; set; }

        public string Description { get; set; }

        public string Room { get; set; }

        public string Manager { get; set; }

        public Appointment()
        {
            var rand = new Random();
            Id = Guid.NewGuid();
            Room = rand.Next(1, 3).ToString();
            Manager = rand.Next(1, 4).ToString();
        }
    }
}

See Also

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