FetchDataEventArgs.AsyncResult Property

Gets or sets a task that allows you to fetch data asynchronously in the SchedulerControl.

Namespace: DevExpress.Xpf.Scheduling

Assembly: DevExpress.Xpf.Scheduling.v25.2.dll

NuGet Package: DevExpress.Wpf.Scheduling

Declaration

C#

public Task<object[]> AsyncResult { get; set; }

VB.NET

Public Property AsyncResult As Task(Of Object())

Property Value

Type	Description
Task<Object[]>	A task that allows you to fetch data asynchronously.

Remarks

The AsyncResult property is similar to the Result property, but allows you to fetch data asynchronously.

The code sample below illustrates how to use the asynchronous data fetch.

C#

public void FetchAppointments(FetchDataEventArgs args) {
    args.AsyncResult = dbContext
        .AppointmentEntities
        .Where(args.GetFetchExpression<AppointmentEntity>())
        .ToArrayAsync<object>();
}

VB.NET

Public Sub FetchAppointments(ByVal args As FetchDataEventArgs)
    Dim res = dbContext.AppointmentEntities.Where(args.GetFetchExpression(Of AppointmentEntity)())
    args.AsyncResult = QueryableExtensions.ToArrayAsync(Of Object)(res)
End Sub

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the AsyncResult property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

wpf-scheduler-load-data-on-demand/CS/CommonDbContext/ViewModels/SchedulingViewModel.cs#L21

public void FetchAppointments(FetchDataEventArgs args) {
    args.AsyncResult = dbContext.AppointmentEntities.
        Where(args.GetFetchExpression<AppointmentEntity>()).

VB.NET

wpf-scheduler-load-data-on-demand/VB/CommonDbContext/ViewModels/SchedulingViewModel.vb#L23

    Dim res = dbContext.AppointmentEntities.Where(args.GetFetchExpression(Of AppointmentEntity)())
    args.AsyncResult = QueryableExtensions.ToArrayAsync(Of Object)(res)
End Sub