/// <summary>
/// Delete all mail items in folder
/// </summary>
/// <param name="mapiFolder">The folder need to delete all mails</param>
public static void DeleteAllItemInMAPIFolder(Outlook.MAPIFolder mapiFolder)
{
if (mapiFolder.Items != null)
{
int count = mapiFolder.Items.Count;
if (count == 0)
{
return;
}
else
{
try
{
do
{
if (mapiFolder.Items.GetFirst() is Outlook.MailItem)
{
Outlook.MailItem outlookMail = (Outlook.MailItem)mapiFolder.Items.GetFirst();
if (outlookMail != null)
{
outlookMail.Delete();
Marshal.ReleaseComObject(outlookMail);
count--;
}
}
else if (mapiFolder.Items.GetFirst() is Outlook.PostItem)
{
Outlook.PostItem outlookPost = (Outlook.PostItem)mapiFolder.Items.GetFirst();
if (outlookPost != null)
{
outlookPost.Delete();
Marshal.ReleaseComObject(outlookPost);
count--;
}
}
else if (mapiFolder.Items.GetFirst() is Outlook.MeetingItem)
{
Outlook.MeetingItem outlookMeeting = (Outlook.MeetingItem)mapiFolder.Items.GetFirst();
if (outlookMeeting != null)
{
outlookMeeting.Delete();
Marshal.ReleaseComObject(outlookMeeting);
count--;
}
}
else if (mapiFolder.Items.GetFirst() is Outlook.AppointmentItem)
{
Outlook.AppointmentItem outlookAppointment = (Outlook.AppointmentItem)mapiFolder.Items.GetFirst();
if (outlookAppointment != null)
{
outlookAppointment.Delete();
Marshal.ReleaseComObject(outlookAppointment);
count--;
}
}
}while (count > 0);
}
catch (Exception e)
{
throw new Exception(e.Message);
}
}
}
}
