SchedulerTimeCellInfo Class

Stores information about a time cell in the Scheduler.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v23.2.dll

NuGet Package: DevExpress.Blazor

Declaration

public class SchedulerTimeCellInfo

Remarks

A SchedulerTimeCellInfo object is passed as the context parameter to time cell templates. Use the Interval property to get the interval to which a time cell belongs. The Resource property specifies the resource associated with the time cell or contains an empty resource item if no resource is assigned.

The following example displays placeholder text for time cells that do not contain appointments:

Index.razor

@using Data

<DxScheduler StartDate="@DateTime.Today"
             DataStorage="@DataStorage">
    <DxSchedulerMonthView>
        <TimeCellTemplate>
            @{
                var appointments = DataStorage.GetAppointments(context.Interval).ToList();
                if (appointments.Count == 0) {
                    <div style="height: 100%; display: flex; justify-content:center">
                        Nothing planned</div>
                }
             }
        </TimeCellTemplate>
    </DxSchedulerMonthView>
</DxScheduler>

@code {
    DxSchedulerDataStorage DataStorage = new DxSchedulerDataStorage() {
        AppointmentsSource = RecurringAppointmentCollection.GetAppointments(),
        AppointmentMappings = new DxSchedulerAppointmentMappings() {
            Type = "AppointmentType",
            Start = "StartDate",
            End = "EndDate",
            Subject = "Caption",
            AllDay = "AllDay",
            Location = "Location",
            Description = "Description",
            LabelId = "Label",
            StatusId = "Status",
            RecurrenceInfo = "Recurrence"
        }
    };
}

RecurringAppointment.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Scheduler.Data {
    public class RecurringAppointment {
        public RecurringAppointment() { }
        public int AppointmentType { get; set; }
        public DateTime StartDate { get; set; }
        public DateTime EndDate { get; set; }
        public string Caption { get; set; }
        public string Description { get; set; }
        public string Location { get; set; }
        public int Status { get; set; }
        public int Label { get; set; }
        public bool AllDay { get; set; }
        public string Recurrence { get; set; }
    }
}

RecurringAppointmentCollection.cs

using System;
using System.Collections.Generic;
using System.Globalization;

namespace Scheduler.Data {
    public static partial class RecurringAppointmentCollection {
        public static List<RecurringAppointment> GetAppointments() {
            DateTime date = DateTimeUtils.GetBeginOfMonth(DateTime.Now);
            date = DateTimeUtils.GetWeekStart(date);
            return new List<RecurringAppointment>() {
            new RecurringAppointment {
                AppointmentType = 1,
                Caption = "Watercolor Landscape",
                Label = 5,
                StartDate = date + (new TimeSpan(2, 9, 30, 0)),
                EndDate = date + (new TimeSpan(2, 11, 0, 0)),
                Recurrence = string.Format("<RecurrenceInfo Start=\"{0}\" End=\"{1}\" WeekDays=\"36\" Id=\"04dcc127-df56-49d7-baff-ce4b6264addd\" OccurrenceCount=\"10\" Range=\"1\" Type=\"1\" />", ToString(date + (new TimeSpan(2, 9, 30, 0))), ToString(date + (new TimeSpan(2, 11, 0, 0))))
            },
            new RecurringAppointment {
                AppointmentType = 1,
                Caption = "Oil Painting for Beginners",
                Label = 2,
                StartDate = date + (new TimeSpan(1, 9, 30, 0)),
                EndDate = date + (new TimeSpan(1, 11, 0, 0)),
                Recurrence = string.Format("<RecurrenceInfo Start=\"{0}\" End=\"{1}\" WeekDays=\"18\" Id=\"72e3db8f-cdb6-4aaa-afe1-e3c6b80ce99e\" OccurrenceCount=\"10\" Range=\"1\" Type=\"1\" />", ToString(date + (new TimeSpan(1, 9, 30, 0))), ToString(date + (new TimeSpan(1, 11, 0, 0))))
            },
            new RecurringAppointment {
                AppointmentType = 1,
                Caption = "Testing",
                Label = 8,
                StartDate = date + (new TimeSpan(1, 12, 0, 0)),
                EndDate = date + (new TimeSpan(1, 13, 0, 0)),
                Recurrence = string.Format("<RecurrenceInfo Start=\"{0}\" End=\"{1}\" WeekDays=\"2\" Id=\"15129fd3-9eb0-4861-8c43-c61844137f17\" OccurrenceCount=\"2\" Frequency=\"2\" Range=\"1\" Type=\"1\" />", ToString(date + (new TimeSpan(1, 12, 0, 0))), ToString(date + (new TimeSpan(1, 13, 0, 0))))
            },
            new RecurringAppointment {
                AppointmentType = 1,
                Caption = "Meeting of Instructors",
                Label = 1,
                StartDate = date + (new TimeSpan(1, 9, 0, 0)),
                EndDate = date + (new TimeSpan(1, 9, 15, 0)),
                Recurrence = string.Format("<RecurrenceInfo Start=\"{0}\" End=\"{1}\" WeekDays=\"62\" Id=\"6de79b21-6b16-4dea-9736-c500058ec858\" OccurrenceCount=\"25\" Range=\"1\" />", ToString(date + (new TimeSpan(1, 9, 0, 0))), ToString(date + (new TimeSpan(1, 9, 15, 0))))
            },
            new RecurringAppointment {
                AppointmentType = 1,
                Caption = "Monthly Planning",
                Label = 1,
                StartDate = date + (new TimeSpan(3, 14, 30, 0)),
                EndDate = date + (new TimeSpan(3, 15, 45, 0)),
                Recurrence = string.Format("<RecurrenceInfo Start=\"{0}\" End=\"{1}\" DayNumber=\"24\" WeekOfMonth=\"0\" Id=\"cd9da802-d166-47d1-a8df-1101fcc50d53\" OccurrenceCount=\"2\" Range=\"1\" Type=\"2\" />", ToString(date + (new TimeSpan(3, 14, 30, 0))), ToString(date + (new TimeSpan(3, 15, 45, 0))))
            },
            new RecurringAppointment {
                AppointmentType = 1,
                Caption = "Annual Open Day",
                Label = 6,
                StartDate = date + (new TimeSpan(27, 9, 30, 0)),
                EndDate = date + (new TimeSpan(27, 13, 0, 0)),
                Recurrence = string.Format("<RecurrenceInfo Start=\"{0}\" Month=\"{1}\" DayNumber=\"{2}\" WeekOfMonth=\"0\" Id=\"bd5dc726-0fa6-4965-99e0-bf69063218e6\" Type=\"3\" />", ToString(date + (new TimeSpan(27, 9, 30, 0))), (date + (new TimeSpan(27, 9, 30, 0))).Month, (date + (new TimeSpan(27, 9, 30, 0))).Day)
            }
        };
        }

        private static string ToString(DateTime dateTime) {
            return dateTime.ToString(CultureInfo.InvariantCulture);
        }

        public static class DateTimeUtils {
            public static DateTime GetWeekStart(DateTime date) {
                return date.DayOfWeek == DayOfWeek.Sunday ? ValidWeekStart(date.Date) : ValidWeekStart(date.Date - CreateWeekOffset(date, DayOfWeek.Sunday));
            }
            public static DateTime GetBeginOfMonth(DateTime date) {
                return new DateTime(date.Year, date.Month, 1);
            }

            static DateTime ValidWeekStart(DateTime date) {
                TimeSpan weekSpan = new TimeSpan(7, 0, 0, 0);
                DateTime baseDate = date.Date;

                if(DateTime.MaxValue - date < weekSpan)
                    return baseDate - weekSpan;
                return baseDate;
            }
            static TimeSpan CreateWeekOffset(DateTime date, DayOfWeek firstDayOfWeek) {
                int offset = (date.DayOfWeek + 7 - firstDayOfWeek) % 7;
                TimeSpan result = TimeSpan.FromDays(offset);
                if(date.Ticks < result.Ticks)
                    result = TimeSpan.FromDays(offset - 7);
                return result;
            }

        }
    }
}

Inheritance

Object

SchedulerTimeCellInfo