ユーザがクリックした WinSchedule オブジェクトを判別

Imports Infragistics.Win.UltraWinSchedule
...
Private Sub UltraMonthViewSingle1_MouseDown(ByVal sender As Object, _
  ByVal e As System.Windows.Forms.MouseEventArgs) _
  Handles UltraMonthViewSingle1.MouseDown
	' If mouse click isn't right mouse click exit
	If Not e.Button = System.Windows.Forms.MouseButtons.Right Then Exit Sub
	Dim point As System.Drawing.Point
	point = New System.Drawing.Point(e.X, e.Y)
	' Determine where in the control the right button was pressed
	Dim objAppointment As Appointment
	Dim objHoliday As Holiday
	Dim objNote As Note
	Dim objWeek As Week
	Dim objDay As Day
	Dim objDayOfWeek As DayOfWeek
	objAppointment = Me.UltraMonthViewSingle1.GetAppointmentFromPoint(e.X, e.Y)
	If Not objAppointment Is Nothing Then
		' objAppointment found
		MessageBox.Show("Appointment " + objAppointment.Subject.ToString())
	End If
	objHoliday = Me.UltraMonthViewSingle1.GetHolidayFromPoint(e.X, e.Y)
	If Not objHoliday Is Nothing Then
		' objHoliday found
		MessageBox.Show("Holiday " + objHoliday.StartDate.ToString())
	End If
	objNote = Me.UltraMonthViewSingle1.GetNoteFromPoint(e.X, e.Y)
	If Not objNote Is Nothing Then
	' objNote found
		MessageBox.Show("Note " + objNote.Date.ToString())
	End If
	objWeek = Me.UltraMonthViewSingle1.GetWeekFromPoint(e.X, e.Y)
	If Not objWeek Is Nothing Then
	' objWeek found
		MessageBox.Show("Week " + objWeek.WeekNumber.ToString())
	End If
	objDay = Me.UltraMonthViewSingle1.GetDayFromPoint(e.X, e.Y)
	If Not objDay Is Nothing Then
		' objDay found
		MessageBox.Show("Day " + objDay.DayNumber.ToString())
	End If
	objDayOfWeek = Me.UltraMonthViewSingle1.GetDayOfWeekFromPoint(e.X, e.Y)
	If Not objDayOfWeek Is Nothing Then
		' objDayOfWeek found
		MessageBox.Show("Day of the Week " + _
		  objDayOfWeek.DayOfTheWeek.ToString())
	End If
End Sub

using Infragistics.Win.UltraWinSchedule;
...
private void ultraMonthViewSingle1_MouseDown(object sender, MouseEventArgs e)
{
	if ( e.Button != System.Windows.Forms.MouseButtons.Right )
		return;
	System.Drawing.Point point = new System.Drawing.Point(e.X, e.Y);
	// Determine where in the control the right button was pressed
	Appointment objAppointment = null;
	Holiday objHoliday = null;
	Note objNote = null;
	Week objWeek = null;
	Infragistics.Win.UltraWinSchedule.Day objDay = null;
	Infragistics.Win.UltraWinSchedule.DayOfWeek objDayOfWeek = null;
	objAppointment = this.ultraMonthViewSingle1.GetAppointmentFromPoint(e.X, e.Y);
	if ( objAppointment != null )
		// objAppointment found
		MessageBox.Show("Appointment " + objAppointment.Subject.ToString());
	objHoliday = this.ultraMonthViewSingle1.GetHolidayFromPoint(e.X, e.Y);
	if ( objHoliday != null )
		// objHoliday found
		MessageBox.Show("Holiday " + objHoliday.StartDate.ToString());
	objNote = this.ultraMonthViewSingle1.GetNoteFromPoint(e.X, e.Y);
	if ( objNote != null )
		// objNote found
		MessageBox.Show("Note " + objNote.Date.ToString());
	objWeek = this.ultraMonthViewSingle1.GetWeekFromPoint(e.X, e.Y);
	if ( objWeek != null )
		// objWeek found
		MessageBox.Show("Week " + objWeek.WeekNumber.ToString());
	objDay= this.ultraMonthViewSingle1.GetDayFromPoint(e.X, e.Y);
	if ( objDay != null )
		// objDay found
		MessageBox.Show("Day " + objDay.DayNumber.ToString());
	objDayOfWeek = this.ultraMonthViewSingle1.GetDayOfWeekFromPoint(e.X, e.Y);
	if ( objDayOfWeek != null )
		// objDayOfWeek found
		MessageBox.Show("Day of the Week " +
		  objDayOfWeek.DayOfTheWeek.ToString());
}