HOWTO: Write a VB MessageFilter for Your Appointment Collection

ID: Q178508

The information in this article applies to:

• Collaboration Data Objects (CDO), version 1.2

SUMMARY

You can use a Collaboration Data Objects (CDO) message filter in Microsoft Visual Basic to filter your appointment calendar. This article contains sample code that demonstrates how to use Visual Basic as a filter.

MORE INFORMATION

WARNING: ANY USE BY YOU OF THE CODE PROVIDED IN THIS ARTICLE IS AT YOUR OWN RISK. Microsoft provides this code "as is" without warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose.

1. Open a new Visual Basic standard executable project.

2. Create a reference to the Microsoft Collaboration Data Objects (CDO) 1.2

   library (Cdo.dll).

4. Copy and paste the following code into the form:

      Option Explicit

      Const strServer As String = "MyExchangeServer"
      Const strMailbox As String = "MyMailbox"
      Private Sub Command1_Click()
        Dim objSession As MAPI.Session
        Dim objCalendarFolder As Folder
        Dim objAppointments As Messages
        Dim objAppointmentFilter As MessageFilter
        Dim objOneAppointment As AppointmentItem
        Dim strProfileInfo As String
        Dim StartTime As Date
        Dim EndTime As Date
        Dim objAppointmentFilterField1 As Field
        Dim objAppointmentFilterField2 As Field

        Screen.MousePointer = vbHourglass
        StrProfileInfo = strServer & vbLf & strMailbox
        Set objSession = New MAPI.Session
        objSession.Logon , , False, False, 0, True, strProfileInfo

       'Fill in a date/time using the vbDate format.
       'For example StartTime = #1/1/98 9:30 AM#.  This vbDate
       'filters appointments that started AFTER 9:30 AM on
       'January 1, 1998.  Use StartTime and EndTime in combination
       'to filter a specific date.  For example, if you wanted to filter
       'for all your appointments on January 1, 1998, use
       'StartTime = #1/1/98#
       'EndTime = #1/2/98#
       'This combination filters for all appointments starting
       'AFTER Janury 1, 1998 at midnight, and all appointments ending
       'BEFORE January 2, 1998 at midnight.
       'You can further refine your filter by adding times to the
       'StartTime and EndTime.
       StartTime = #m/d/yy hh:mm XX#
       EndTime = #m/d/yy hh:mm XX#
        Set objCalendarFolder = _
          objSession.GetDefaultFolder(CdoDefaultFolderCalendar)
        Set objAppointments = objCalendarFolder.Messages
       Set objAppointmentFilter = objAppointments.Filter
      'NOTE: Pass the EndTime parameter to the START_DATE field and the
      '      StartTime parameter to the END_DATE field.
       Set objAppointmentFilterField1 = _
         objAppointmentFilter.Fields.Add(ActMsgPR_START_DATE, EndTime)
       Set objAppointmentFilterField2 = _
         objAppointmentFilter.Fields.Add(ActMsgPR_END_DATE, StartTime)

       For Each objOneAppointment In objAppointments
         Debug.Print "objOneAppointment.Subject = " & _
               objOneAppointment.Subject
         Debug.Print "objOneAppointment.StartTime = " & _
               objOneAppointment.StartTime
         Debug.Print "objOneAppointment.EndTime = " & _
               objOneAppointment.EndTime
         Debug.Print
       Next

       objSession.Logoff
       Set objOneAppointment = Nothing
       Set objAppointments = Nothing
       Set objCalendarFolder = Nothing
       Set objSession = Nothing
       Screen.MousePointer = vbNormal
      End Sub

   appointments for the selected date.

REFERENCES

See the "MessageFilter Object" and "AddressEntryFilter Object" topics in the Microsoft Developer Network Library.

Keywords          : kbcode kbCDO120 kbMsg kbVBp kbGrpMsg 
Version           : WINDOWS:1.2
Platform          : WINDOWS
Issue type        : kbhowto

Last Reviewed: April 8, 1999