private void OutlookItems_ItemRemove()
{
IEnumerable <Outlook.TaskItem> taskEnumerator = outlookItems.Cast <Outlook.TaskItem>();
List <Outlook.TaskItem> outlookTaskList = new List <Outlook.TaskItem>(taskEnumerator);
IEnumerable <OutlookTask> toDeleteSubset = taskAndCategoryLoader.Tasks.Where(task => !outlookTaskList.Exists(element => element.EntryID.Equals(task.EntryId)));
for (int index = 0; index < toDeleteSubset.Count(); index++)
{
OutlookTask taskToDelete = toDeleteSubset.ElementAt(index);
taskAndCategoryLoader.Tasks.Remove(taskToDelete);
TaskRemove?.Invoke(taskToDelete);
}
}