ISchedulerRecurrenceInfo Interface

A base interface that defines recurrence information.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v25.1.dll

NuGet Package: DevExpress.Blazor

Declaration

C#

public interface ISchedulerRecurrenceInfo :
    INotifyPropertyChanged

Related API Members

The following members return ISchedulerRecurrenceInfo objects:

• DxSchedulerAppointmentItem.RecurrenceInfo

Remarks

The ISchedulerRecurrenceInfo interface is the base interface implemented in the DxSchedulerRecurrenceInfo class.

The following example prevents users from creating reccurent appointments that occur only once:

Index.razor

<DxScheduler @bind-StartDate="@StartDate"
             DataStorage="@DataStorage"
             AppointmentUpdating="AppointmentUpdating"
             AppointmentInserting="AppointmentInserting"
             AppointmentFormClosing="AppointmentFormClosing">
    <DxSchedulerWeekView ShowWorkTimeOnly="true"></DxSchedulerWeekView>
</DxScheduler>
<DxPopup @bind-Visible="@AlertVisible"
         CloseOnEscape="true"
         CloseOnOutsideClick="true"
         ShowCloseButton="true"
         HeaderText="Note"
         BodyText="The recurrent appointment occurs only once. Increase the appointment count or create a regular appointment.">
</DxPopup>

@code {
    bool AlertVisible = false;
    bool ValidationFailed = false;
    DateTime StartDate { get; set; } = DateTime.Today;

    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"
        }
    };
    bool IsAppointmentValid(DxSchedulerAppointmentItem appointment) {
        if (appointment.IsRecurring && 
                appointment.RecurrenceInfo.Range == SchedulerRecurrenceRange.OccurrenceCount &&
                appointment.RecurrenceInfo.OccurrenceCount == 1)
            return false;
        return true;
    }

    void AppointmentUpdating(SchedulerAppointmentOperationEventArgs e) {
        if (!IsAppointmentValid(e.Appointment)) {
            e.Cancel = true;
            AlertVisible = true;
            ValidationFailed = true;
        }
    }
    void AppointmentInserting(SchedulerAppointmentOperationEventArgs e) {
        if (!IsAppointmentValid(e.Appointment)) {
            e.Cancel = true;
            AlertVisible = true;
            ValidationFailed = true;
        }
    }
    void AppointmentFormClosing(SchedulerAppointmentFormClosingEventArgs e) {
        if (ValidationFailed) {
            e.Cancel = true;
            ValidationFailed = false;
        }
    }
}

Appointment

public class Appointment {
    public Appointment() {}

    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 Label { get; set; }
    public int Status { get; set; }
    public bool AllDay { get; set; }
    public string Recurrence { get; set; }
}

RecurringAppointmentCollection

public static partial class RecurringAppointmentCollection {
        public static List<Appointment> GetAppointments() {
            DateTime date = DateTimeUtils.GetBeginOfMonth(DateTime.Now);
            date = DateTimeUtils.GetWeekStart(date);
            return new List<Appointment>() {
                new Appointment {
                    AppointmentType = 1,
                    Caption = "Watercolor Landscape",
                    Label = 5,
                    StartDate = date + (new TimeSpan(2, 13, 0, 0)),
                    EndDate = date + (new TimeSpan(2, 14, 30, 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, 13, 0, 0))), ToString(date + (new TimeSpan(2, 14, 30, 0)))),
                    ResourceId = 0
                },
                new Appointment {
                    AppointmentType = 1,
                    Caption = "Oil Painting for Beginners",
                    Label = 2,
                    StartDate = date + (new TimeSpan(1, 12, 0, 0)),
                    EndDate = date + (new TimeSpan(1, 13, 30, 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, 12, 0, 0))), ToString(date + (new TimeSpan(1, 13, 30, 0)))),
                    ResourceId = 0
                },
                new Appointment {
                    AppointmentType = 1,
                    Caption = "Testing",
                    Label = 8,
                    StartDate = date + (new TimeSpan(1, 14, 0, 0)),
                    EndDate = date + (new TimeSpan(1, 15, 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, 14, 0, 0))), ToString(date + (new TimeSpan(1, 15, 0, 0)))),
                    ResourceId = 1
                },
                new Appointment {
                    AppointmentType = 1,
                    Caption = "Meeting of Instructors",
                    Label = 1,
                    StartDate = date + (new TimeSpan(1, 10, 0, 0)),
                    EndDate = date + (new TimeSpan(1, 10, 45, 0)),
                    Recurrence = string.Format("<RecurrenceInfo Start=\"{0}\" End=\"{1}\" WeekDays=\"62\" Id=\"6de79b21-6b16-4dea-9736-c500058ec858\" OccurrenceCount=\"25\" Range=\"1\" Type=\"1\" />", ToString(date + (new TimeSpan(1, 10, 0, 0))), ToString(date + (new TimeSpan(1, 10, 45, 0)))),
                    ResourceId = 1
                },
                new Appointment {
                    AppointmentType = 1,
                    Caption = "Monthly Planning",
                    Label = 1,
                    StartDate = date + (new TimeSpan(3, 16, 0, 0)),
                    EndDate = date + (new TimeSpan(3, 17, 0, 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, 16, 0, 0))), ToString(date + (new TimeSpan(3, 17, 0, 0)))),
                    ResourceId = 2
                },
                new Appointment {
                    AppointmentType = 1,
                    Caption = "Annual Open Day",
                    Label = 6,
                    StartDate = date + (new TimeSpan(27, 10, 30, 0)),
                    EndDate = date + (new TimeSpan(27, 14, 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, 10, 30, 0))), (date + (new TimeSpan(27, 10, 30, 0))).Month, (date + (new TimeSpan(27, 10, 30, 0))).Day),
                    ResourceId = 3
                }
            };
        }
        private static string ToString(DateTime dateTime) {
            return dateTime.ToString(CultureInfo.InvariantCulture);
        }
    }