Navigating through months in Timeline view

HOW-TO

Navigate through months in Timeline view.

DESCRIPTION

Clicking on the previous or next arrow will take you to the previous or next month. This functionality is achieved by dynamically setting the SelectedDate and TimelineView.NumberOfSlots properties.

SOLUTION

ASPX

<telerik:RadScheduler ID="RadScheduler1" runat="server" SelectedView="TimelineView"
    OnNavigationComplete="RadScheduler1_NavigationComplete">
    <TimelineView ColumnHeaderDateFormat="dd" HeaderDateFormat="M" />
    <DayView UserSelectable="false" />
    <WeekView UserSelectable="false" />
    <MonthView UserSelectable="false" />
    <TimelineView UserSelectable="false" />
</telerik:RadScheduler>

C#

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack & RadScheduler1.SelectedView == SchedulerViewType.TimelineView)
        {
            int year = RadScheduler1.SelectedDate.Year;
            int month = RadScheduler1.SelectedDate.Month;
            int numberOfDaysInCurrentMonth = DateTime.DaysInMonth(year, month);
            RadScheduler1.SelectedDate = new DateTime(year, month, 1);
            RadScheduler1.TimelineView.NumberOfSlots = numberOfDaysInCurrentMonth;
        }
    }
    protected void RadScheduler1_NavigationComplete(object sender, SchedulerNavigationCompleteEventArgs e)
    {
        if (RadScheduler1.SelectedView == SchedulerViewType.TimelineView)
        {
            int year = RadScheduler1.SelectedDate.Year;
            //We need to add 3 days to make up for the largest possible difference
            //in the number of days for any two months(31-28=3).
            int month = RadScheduler1.SelectedDate.AddDays(3).Month;
            int numberOfDaysInCurrentMonth = DateTime.DaysInMonth(year, month);
            RadScheduler1.SelectedDate = new DateTime(year, month, 1);
            RadScheduler1.TimelineView.NumberOfSlots = numberOfDaysInCurrentMonth;     
        }
    }

VB

Protected Sub Page_Load(sender As Object, e As EventArgs)
    If Not IsPostBack And RadScheduler1.SelectedView = SchedulerViewType.TimelineView Then
        Dim year As Integer = RadScheduler1.SelectedDate.Year
        Dim month As Integer = RadScheduler1.SelectedDate.Month
        Dim numberOfDaysInCurrentMonth As Integer = DateTime.DaysInMonth(year, month)
        RadScheduler1.SelectedDate = New DateTime(year, month, 1)
        RadScheduler1.TimelineView.NumberOfSlots = numberOfDaysInCurrentMonth
    End If
End Sub
Protected Sub RadScheduler1_NavigationComplete(sender As Object, e As SchedulerNavigationCompleteEventArgs)
    If RadScheduler1.SelectedView = SchedulerViewType.TimelineView Then
        Dim year As Integer = RadScheduler1.SelectedDate.Year
        'We need to add 3 days to make up for the largest possible difference
        'in the number of days for any two months(31-28=3).
        Dim month As Integer = RadScheduler1.SelectedDate.AddDays(3).Month
        Dim numberOfDaysInCurrentMonth As Integer = DateTime.DaysInMonth(year, month)
        RadScheduler1.SelectedDate = New DateTime(year, month, 1)
        RadScheduler1.TimelineView.NumberOfSlots = numberOfDaysInCurrentMonth
    End If
End Sub