public IEnumerable<DxSchedulerAppointmentItem> GetAppointments(
    DxSchedulerDateTimeRange interval
)

<DxScheduler StartDate="@DateTime.Today" DataStorage="@DataStorage">
    <DxSchedulerWeekView ShowWorkTimeOnly="true"></DxSchedulerWeekView>
</DxScheduler>

@code {
    DxSchedulerDataStorage DataStorage = new DxSchedulerDataStorage() {
        AppointmentsSource = AppointmentCollection.GetAppointments(),
        AppointmentMappings = new DxSchedulerAppointmentMappings() {
            Type = "AppointmentType",
            Start = "StartDate",
            End = "EndDate",
            Subject = "Caption",
            AllDay = "AllDay",
            Location = "Location",
            Description = "Description",
            LabelId = "Label",
            StatusId = "Status",
            RecurrenceInfo = "Recurrence"
        }
    };

    // ...
    void GetMyAppointments() {
        DxSchedulerDateTimeRange range = new DxSchedulerDateTimeRange(DateTime.Today, 
          DateTime.Today.AddDays(7));
        var appointments = DataStorage.GetAppointments(range);
    }
}

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; }
}

public static partial class AppointmentCollection {
    public static List<Appointment> GetAppointments() {
        DateTime date = DateTime.Today;
        var dataSource = new List<Appointment>() {
            new Appointment {
                Caption = "Install New Router in Dev Room",
                StartDate = date + (new TimeSpan(0, 10, 0, 0)),
                EndDate = date + (new TimeSpan(0, 12, 0, 0)),
                Label = 6, 
                Status = 1
            },
            new Appointment {
                Caption = "Upgrade Personal Computers",
                StartDate = date + (new TimeSpan(0, 13, 0, 0)),
                EndDate = date + (new TimeSpan(0, 14, 30, 0)),
                Label = 1, 
                Status = 1
            },
            new Appointment {
                Caption = "Website Redesign Plan",
                StartDate = date + (new TimeSpan(1, 9, 30, 0)),
                EndDate = date + (new TimeSpan(1, 11, 30, 0)),
                Label = 1, 
                Status = 1
            },
            // ...
        };
        return dataSource;
    }
}