I have a problem while iterating over Outlook MailItems in and OutlookSelection. I realise that the error is probably caused by a meeting invitation or some other type if Outlook item. I know I could look over objects in a Folder and test to see if each one is a MailItem but I cannot do that as the task has to process a Selection. Is there a way to iterate through the objects in an Outlook selection?
You can check out the item type at runtime:
Outlook.Explorer currentExplorer = null;
private void ThisAddIn_Startup
(object sender, System.EventArgs e)
{
currentExplorer = this.Application.ActiveExplorer();
currentExplorer.SelectionChange += new Outlook
.ExplorerEvents_10_SelectionChangeEventHandler
(CurrentExplorer_Event);
}
private void CurrentExplorer_Event()
{
Outlook.MAPIFolder selectedFolder =
this.Application.ActiveExplorer().CurrentFolder;
String expMessage = "Your current folder is "
+ selectedFolder.Name + ".\n";
String itemMessage = "Item is unknown.";
try
{
if (this.Application.ActiveExplorer().Selection.Count > 0)
{
Object selObject = this.Application.ActiveExplorer().Selection[1];
if (selObject is Outlook.MailItem)
{
Outlook.MailItem mailItem =
(selObject as Outlook.MailItem);
itemMessage = "The item is an e-mail message." +
" The subject is " + mailItem.Subject + ".";
mailItem.Display(false);
}
else if (selObject is Outlook.ContactItem)
{
Outlook.ContactItem contactItem =
(selObject as Outlook.ContactItem);
itemMessage = "The item is a contact." +
" The full name is " + contactItem.Subject + ".";
contactItem.Display(false);
}
else if (selObject is Outlook.AppointmentItem)
{
Outlook.AppointmentItem apptItem =
(selObject as Outlook.AppointmentItem);
itemMessage = "The item is an appointment." +
" The subject is " + apptItem.Subject + ".";
}
else if (selObject is Outlook.TaskItem)
{
Outlook.TaskItem taskItem =
(selObject as Outlook.TaskItem);
itemMessage = "The item is a task. The body is "
+ taskItem.Body + ".";
}
else if (selObject is Outlook.MeetingItem)
{
Outlook.MeetingItem meetingItem =
(selObject as Outlook.MeetingItem);
itemMessage = "The item is a meeting item. " +
"The subject is " + meetingItem.Subject + ".";
}
}
expMessage = expMessage + itemMessage;
}
catch (Exception ex)
{
expMessage = ex.Message;
}
MessageBox.Show(expMessage);
}
See How to: Programmatically determine the current Outlook item for more information.