Put this in the startup code (After the fill.database: InitializeTimeZones() Here is The VB coding. Private Sub InitalizeTimeZones() ddTimeZones.SortStyle = Telerik.WinControls.Enumerations.SortStyle.Ascending ddTimeZones.DataSource = Time.GetSchedulerTimeZones ddTimeZones.DisplayMember = "List" End Sub Private Sub RadButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadButton1.Click RadScheduler1.ActiveView.DefaultTimeZone = DirectCast(ddTimeZones.SelectedValue, SchedulerTimeZone) End Sub Private Sub RadButton2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadButton2.Click Dim view As SchedulerDayViewBase = TryCast(RadScheduler1.ActiveView, SchedulerDayViewBase) If view IsNot Nothing Then view.TimeZones.Add(DirectCast(ddTimeZones.SelectedValue, SchedulerTimeZone)) End If End Sub