日历委托是 Exchange 的一项功能,Graph API 和 Outlook API 不允许用户访问委托的日历。目前,替代解决方法可能是使用 EWS。这是一个示例供您参考:
static void DelegateAccessSearchWithFilter(ExchangeService service, SearchFilter filter)
{
// Limit the result set to 10 items.
ItemView view = new ItemView(10);
view.PropertySet = new PropertySet(ItemSchema.Subject,
ItemSchema.DateTimeReceived,
EmailMessageSchema.IsRead);
// Item searches do not support deep traversal.
view.Traversal = ItemTraversal.Shallow;
// Define the sort order.
view.OrderBy.Add(ItemSchema.DateTimeReceived, SortDirection.Descending);
try
{
// Call FindItems to find matching calendar items.
// The FindItems parameters must denote the mailbox owner,
// mailbox, and Calendar folder.
// This method call results in a FindItem call to EWS.
FindItemsResults<Item> results = service.FindItems(
new FolderId(WellKnownFolderName.Calendar,
"fx@msdnofficedev.onmicrosoft.com"),
filter,
view);
foreach (Item item in results.Items)
{
Console.WriteLine("Subject: {0}", item.Subject);
Console.WriteLine("Id: {0}", item.Id.ToString());
}
}
catch (Exception ex)
{
Console.WriteLine("Exception while enumerating results: { 0}", ex.Message);
}
}
private static void GetDeligateCalendar(string mailAddress, string password)
{
ExchangeService service = new ExchangeService();
service.Credentials = new WebCredentials(mailAddress, password);
service.TraceEnabled = true;
service.TraceFlags = TraceFlags.All;
service.AutodiscoverUrl(mailAddress, RedirectionUrlValidationCallback);
SearchFilter sf = new SearchFilter.SearchFilterCollection(LogicalOperator.And, new SearchFilter.IsEqualTo(AppointmentSchema.Subject, "Discuss the Calendar REST API"));
DelegateAccessSearchWithFilter(service, sf);
}
如果您希望 Outlook 和 Graph API 支持此功能,您可以尝试通过以下链接联系 Office 开发人员团队:
https://officespdev.uservoice.com/