DxScheduler.AppointmentFormClosing Event
Fires before the appointment form is closed.
Namespace: DevExpress.Blazor
Assembly: DevExpress.Blazor.v24.2.dll
NuGet Package: DevExpress.Blazor
Declaration
[Parameter]
public EventCallback<SchedulerAppointmentFormClosingEventArgs> AppointmentFormClosing { get; set; }Event Data
The AppointmentFormClosing event's data class is SchedulerAppointmentFormClosingEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| Appointment | Specifies the target appointment. Inherited from SchedulerAppointmentOperationEventArgs. |
| Cancel | Gets or sets a value indicating whether the event should be canceled. Inherited from CancelEventArgs. |
| FormInfo | Specifies the appointment form information. |
| FormType | Specifies the appointment form type. |
Remarks
The Scheduler component raises the AppointmentFormShowing/AppointmentFormClosing event before the appointment form appears/closes. The FormType event argument identifies whether an extended or compact form is used:
<DxScheduler StartDate="@DateTime.Today"
DataStorage="@DataStorage"
ActiveViewType="SchedulerViewType.WorkWeek"
AppointmentFormClosing="OnAppointmentFormClosing">
@*...*@
</DxScheduler>
@code {
void OnAppointmentFormClosing(SchedulerAppointmentFormClosingEventArgs args) {
if (args.FormType == SchedulerAppointmentFormType.CompactEditForm) {
// Respond to form closing (for instance, show an information message).
}
}
// ...
}
The following example prevents users from creating reccurent appointments that occur only once:
<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;
}
}
}
See Also