Setting a property of an item in ItemChange() will of course cause that
event to fire again. So you need to put a flag on the item as you change the
color to show it was already changed. An alternative would be to maintain a
list of items that have been changed in that event handler and if the item
is already in the list then don't change it again.
--
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Professional Programming Outlook 2007.
Reminder Manager, Extended Reminders, Attachment Options.
http://www.slovaktech.com/products.htm
"Johan Machielse" <(E-Mail Removed)> wrote in
message news:48E169F2-C37D-49A3-B1E2-(E-Mail Removed)...
> Dear reader,
>
> I've created an add-in for Outlook 2007; this add-in sets the color of the
> appointments related to the location.
>
> - In the OnStartupComplete() event all appointments will be colored.
> - In the Outlook.MAPIFolder.AddItem event new appointmets will be colored.
>
> But, it goes wrong with the Outlook.MAPIFolder.ChangeItem event...
>
> //_calendarItems is of type Outlook.MAPIFolder
> _calendarItems.ItemChange += new
> Microsoft.Office.Interop.Outlook.ItemsEvents_ItemChangeEventHandler(Items_ItemChange);
>
> //ItemChange event handler
> void Items_ItemChange(object Item)
> {
> Outlook.AppointmentItem appointment = (Outlook.AppointmentItem)Item;
> SetColorAppointment(appointment);
> }
>
> //changes color appointment (called within all events mentioned above)
> private void SetColorAppointment(Outlook.AppointmentItem appointment)
> {
> int color = GetLocationColor(appointment.Location);
>
>
> appointment.PropertyAccessor.SetProperty"http://schemas.microsoft.com/mapi/id/
> {00062002-0000-0000-C000-000000000046}/82140003",
> color);
> appointment.Save();
>
> }
>
> When the SetColorAppointment() has been called; the event
> Item_ItemChange()
> will be called again and again and again, because the item changed off
> course! How can this behavour be solved?
>
> I also tried this version of the SetColorAppointment() method (with
> Redemption); the Items_ItemChange() will also be called again and again...
>
> Rdo.SafeAppointmentItem safeAppointment = new Rdo.SafeAppointmentItem();
> safeAppointment.Item = appointment;
> int propertyID =
> safeAppointment.GetIDsFromNames("{00062002-0000-0000-C000-000000000046}",
> 0x8214);
> propertyID = propertyID | 0x3;
> safeAppointment.set_Fields(propertyID, color);
> //appointment.Subject = appointment.Subject;
> appointment.Save();
>
> I also tried using the Outlook.AppointmentItem.PropertyChange event. This
> event fires when the Location property has been changed but when I handle
> this event and try to set the colors of all appointments; the appointment
> wherefrom I just changed the location still has the old location??? I
> checked
> it and the case is that the I continuously change the color of the
> previous
> location! During this event it seems like I don't have the current
> MAPIFolder
> with the current appointment items?
>
> void appointment_PropertyChange(string Name)
> {
> if ( Name == "Location" )
> {
> foreach (Outlook.AppointmentItem appointment in _items)
> {
> SetColorAppointment(appointment);
> }
> }
> }
>
> In Outlook 2003 I got it working with the Redemption method and
> PropertyChange event, but this approach does not seem to work in Outlook
> 2007...
>
> What is the best solution to catch the event that the location has been
> changed of an appoinment and changing the color successfully in Outlook
> 2007?
>
> Thank you in advance,
>
> Johan Machielse
>
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