SchedulerExtension.GetAppointmentsToUpdate<T>(String, FetchAppointmentsMethod, Object, MVCxAppointmentStorage, MVCxResourceStorage) Method

Obtains appointments whose data should be updated in the data source using the delegate method that enables you to dynamically limit the number of loaded appointments.

Namespace: DevExpress.Web.Mvc

Assembly: DevExpress.Web.Mvc5.v23.2.dll

NuGet Package: DevExpress.Web.Mvc5

Declaration

C#

public static T[] GetAppointmentsToUpdate<T>(
    string schedulerName,
    FetchAppointmentsMethod fetchAppointmentsMethod,
    object resourceDataObject,
    MVCxAppointmentStorage appointmentStorage,
    MVCxResourceStorage resourceStorage
)

VB.NET

Public Shared Function GetAppointmentsToUpdate(Of T)(
    schedulerName As String,
    fetchAppointmentsMethod As FetchAppointmentsMethod,
    resourceDataObject As Object,
    appointmentStorage As MVCxAppointmentStorage,
    resourceStorage As MVCxResourceStorage
) As T()

Parameters

Name	Type	Description
schedulerName	String	The name of a Scheduler as it is specified by the SettingsBase.Name property.
fetchAppointmentsMethod	FetchAppointmentsMethod	A FetchAppointmentsMethod delegate that provides appointments to insert.
resourceDataObject	Object	A collection of resources in the scheduler.
appointmentStorage	MVCxAppointmentStorage	An MVCxAppointmentStorage object that implements the appointment storage functionality and contains mappings.
resourceStorage	MVCxResourceStorage	An MVCxResourceStorage object that implements the resource storage functionality and contains mappings.

Type Parameters

Name
T

Returns

Type	Description
T[]	A Model data class instance that is the entity contained in the appointment data source and mapped to an appointment.

Remarks

The GetAppointmentsToUpdate<T> method instantiates a Scheduler and applies the specified settings. Then, an appointment being inserted is retrieved from this Scheduler instance.

For an example of use refer to the following code snippet.

View Example: Scheduler - How to implement the FetchAppointment event functionality

SchedulerPartial.cshtml

@Html.DevExpress().Scheduler(SchedulerSettingsHelper.CommonSchedulerSettings).Bind(Model.FetchAppointments, Model.Resources).GetHtml()

HomeController.cs

static void UpdateAppointment() {

    DBAppointment[] insertedAppt = SchedulerExtension.GetAppointmentsToInsert<DBAppointment>(SchedulerSettingsHelper.CommonSchedulerSettings,
        SchedulerDataHelper.FetchAppointmentsHelperMethod,
        SchedulerDataHelper.GetResources());
    foreach (var appt in insertedAppt) {
        SchedulerDataHelper.InsertAppointment(appt);
    }

    DBAppointment[] updatedAppt = SchedulerExtension.GetAppointmentsToUpdate<DBAppointment>(SchedulerSettingsHelper.CommonSchedulerSettings,
        SchedulerDataHelper.FetchAppointmentsHelperMethod,
        SchedulerDataHelper.GetResources());

    foreach (var appt in updatedAppt) {
        SchedulerDataHelper.UpdateAppointment(appt);
    }

    DBAppointment[] removedAppt = SchedulerExtension.GetAppointmentsToRemove<DBAppointment>(SchedulerSettingsHelper.CommonSchedulerSettings,
        SchedulerDataHelper.FetchAppointmentsHelperMethod, 
        SchedulerDataHelper.GetResources());
    foreach (var appt in removedAppt) {
        SchedulerDataHelper.RemoveAppointment(appt);
    }

}

HomeController.vb

Private Shared Sub UpdateAppointment()

    Dim insertedAppt() As DBAppointment = SchedulerExtension.GetAppointmentsToInsert(Of DBAppointment)(SchedulerSettingsHelper.CommonSchedulerSettings, AddressOf SchedulerDataHelper.FetchAppointmentsHelperMethod, SchedulerDataHelper.GetResources())
    For Each appt In insertedAppt
        SchedulerDataHelper.InsertAppointment(appt)
    Next appt

    Dim updatedAppt() As DBAppointment = SchedulerExtension.GetAppointmentsToUpdate(Of DBAppointment)(SchedulerSettingsHelper.CommonSchedulerSettings, AddressOf SchedulerDataHelper.FetchAppointmentsHelperMethod, SchedulerDataHelper.GetResources())

    For Each appt In updatedAppt
        SchedulerDataHelper.UpdateAppointment(appt)
    Next appt

    Dim removedAppt() As DBAppointment = SchedulerExtension.GetAppointmentsToRemove(Of DBAppointment)(SchedulerSettingsHelper.CommonSchedulerSettings, AddressOf SchedulerDataHelper.FetchAppointmentsHelperMethod, SchedulerDataHelper.GetResources())
    For Each appt In removedAppt
        SchedulerDataHelper.RemoveAppointment(appt)
    Next appt

End Sub