EWS：一种或两种方法因权限错误而中断了我的同步

Question

我的代码突然中断了，我将其调试为两种导致这种情况的方法。我已注释/删除了一些代码，使其再次起作用。具体是以下方法：

GetAgentCalendar（）：

private Folder GetAgentCalendar(ExchangeService service, SAFEAgent agent) {
        string username = agent.EmailAddress;

        var calendar = SendExchangeRequest(() => Folder.Bind(service, new FolderId(WellKnownFolderName.Calendar, username)));

       // if(!HasCalendarEditorPermissions(calendar, SC01_SID))
         //   throw new InvalidOperationException("Agent has not assigned editor permissions");

        agent.ExchangeSyncronizationSettings.HasCalendarEditorPermission = true;

        return calendar;
    }

HasCalendarEditorPermissions（）

private bool HasCalendarEditorPermissions(Folder calendar, string userSID) {
    if(calendar == null)
        throw new ArgumentNullException("calendar");

    if(calendar.GetLoadedPropertyDefinitions().Contains(FolderSchema.Permissions))
        SendExchangeRequest(() => calendar.Load(new PropertySet(FolderSchema.Permissions)));

    return calendar.Permissions.Any(p => p.UserId.SID == userSID &&
                                         p.DisplayPermissionLevel == FolderPermissionLevel.Editor);
}

正在调用此特定错误：

} catch(Exception ex) {
                                                         if(ex.InnerException != null) {
                                                             if(ex.InnerException is InvalidOperationException) {
                                                                 if(ex.InnerException.Message == "Agent has not assigned editor permissions") {
                                                                     a.ExchangeSyncronizationSettings.HasCalendarEditorPermission = false;
                                                                     a.ExchangeSyncronizationSettings.Save(conn);

                                                                     Console.WriteLine("Rettigheder til kalender mangler for " + a.Initials);
                                                                     permissionEx.Add(a.Initials);
                                                                 } else
                                                                     exceptions.Add(ex.InnerException);