DxScheduler.AppointmentRemoved Event

Fires after an appointment is removed from the AppointmentsSource object.

Assembly : DevExpress.Blazor.v25.2.dll

Declaration

csharp

[Parameter]
public EventCallback<DxSchedulerAppointmentItem> AppointmentRemoved { get; set; }

Parameters

Type	Description
DxSchedulerAppointmentItem

A DxSchedulerAppointmentItem object that stores a removed appointment.

Remarks

Use the AppointmentRemoved event to get information about a removed appointment after it has been deleted from the AppointmentsSource object.

Note

To cancel an appointment removal in code, use the AppointmentRemoving event.

The following code snippet does the following:

Creates a DxSchedulerDataStorage object, sets its AppointmentsSource to null.
Assigns the created data storage object to the Scheduler’s DataStorage property.
In the OnInitialized lifecycle method, creates a new DbContext and loads data from the DbContext to the DxSchedulerDataStorage.AppointmentsSource property.
Handles AppointmentInserted, AppointmentUpdated, and AppointmentRemoved events to implement CRUD operations in the Scheduler. To access a target appointment, the SourceObject property is used.
Uses the DbContext.Dispose method to track the context for the component lifetime.

razor

@inject IDbContextFactory<MedicsSchedulingContext> MedicsSchedulingContextFactory
@implements IDisposable

<DxScheduler StartDate="@startDate"
             DataStorage="@DataStorage"
             AppointmentUpdated="@AppointmentUpdated"
             AppointmentInserted="@AppointmentInserted"
             AppointmentRemoved="@AppointmentRemoved"
             GroupType="SchedulerGroupType.Resource">
    <DxSchedulerDayView DayCount="1" ShowWorkTimeOnly="true"></DxSchedulerDayView>
    ...
        <Scales>
            <DxSchedulerTimeScale Unit="@SchedulerTimeScaleUnit.Day" UnitCount="1"></DxSchedulerTimeScale>
            <DxSchedulerTimeScale Unit="@SchedulerTimeScaleUnit.Hour" UnitCount="2"></DxSchedulerTimeScale>
        </Scales>
    </DxSchedulerTimelineView>
</DxScheduler>

@code {
    DateTime startDate { get; set; } = new DateTime(2016, 10, 10);
    MedicsSchedulingContext dbContext { get; set; }

    DxSchedulerDataStorage DataStorage = new DxSchedulerDataStorage() {
            AppointmentsSource = null,
            AppointmentMappings = new DxSchedulerAppointmentMappings() {
                Id = "Id",
                Type = "EventType",
                Start = "StartTime",
                End = "EndTime",
                Subject = "Subject",
                AllDay = "AllDay",
                Location = "Location",
                Description = "Description",
                LabelId = "Label",
                StatusId = "Status",
                ResourceId = "MedicId",
                RecurrenceInfo = "RecurrenceInfo"
            },
            ResourcesSource = null,
            ResourceMappings = new DxSchedulerResourceMappings() {
                Id = "Id",
                Caption = "DisplayName"
            }
        };

    protected override void OnInitialized() {
        dbContext = MedicsSchedulingContextFactory.CreateDbContext();
        DataStorage.AppointmentsSource = dbContext.MedicalAppointments.ToList();
        DataStorage.ResourcesSource = dbContext.Medics.ToList();
    }

    void AppointmentInserted(DxSchedulerAppointmentItem e) {
        dbContext.Add(e.SourceObject);
        dbContext.SaveChanges();
    }

    void AppointmentUpdated(DxSchedulerAppointmentItem e) {
        dbContext.SaveChanges();
    }

    void AppointmentRemoved(DxSchedulerAppointmentItem e) {
        dbContext.Remove(e.SourceObject);
        dbContext.SaveChanges();
    }

    public void Dispose() {
        dbContext?.Dispose();
    }
}