calender Day view

I have a using calender control. How to change the Calender View type? (vb.net)


Imports System.Drawing
Imports System.Collections
Imports System.ComponentModel
Imports System.Windows.Forms
Imports System.Data
Imports XtremeCalendarControl

Public Class Form1
    Private Sub CmdDayView_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CmdDayView.Click
        If CalendarControl.ViewType <> CalendarViewType.xtpCalendarDayView Then
            CalendarControl.ViewType = CalendarViewType.xtpCalendarDayView
        End If
     End Sub
End Class


Run time have a error :  "calenderViewType" is ambiguous in the namespace 'XtremeCalenderControl'

How to solve that problem...?