EWS - 访问所有共享日历

Question

我有以下代码：

    private void ListCalendarFolders(ref List<EBCalendar> items, int offset)
    {
        var pageSize = 100;
        var view = new FolderView(pageSize, offset, OffsetBasePoint.Beginning);
        view.PropertySet = new PropertySet(BasePropertySet.FirstClassProperties);
        view.PropertySet.Add(FolderSchema.DisplayName);
        view.PropertySet.Add(FolderSchema.EffectiveRights);

        view.Traversal = FolderTraversal.Deep;

        FindFoldersResults findFolderResults = service.FindFolders(WellKnownFolderName.MsgFolderRoot, view);
        foreach (Folder myFolder in findFolderResults.Folders)
        {
            if (myFolder is CalendarFolder)
            {
                var folder = myFolder as CalendarFolder;
                items.Add(EBCalendar.FromEWSFolder(folder));
            }
        }

        if (findFolderResults.MoreAvailable)
        {
            offset = offset + pageSize;
            ListCalendarFolders(ref items, offset);
        }
    }

其中service 是ExchangeService 实例。不幸的是，它仍然会列出已删除的文件夹，并且不会列出共享日历。

如何让它列出所有共享日历，如何让它不包括已删除的文件夹？

Answer 1

共享日历是指 Outlook 中其他日历节点下的日历吗？

如果是这样，这些项目是存储在非IPMSubtree（根）下邮箱的Common Views 文件夹中的导航链接，请参阅http://msdn.microsoft.com/en-us/library/ee157359(v=exchg.80).aspx。您可以使用 EWS 从邮箱获取 NavLink，并使用 PidTagWlinkAddressBookEID 扩展属性获取这些链接所引用的邮箱的 X500 地址，然后使用解析名称将其解析为 SMTP 地址。然后您需要做的就是绑定到该文件夹​​，例如

     static Dictionary<string, Folder> GetSharedCalendarFolders(ExchangeService service, String mbMailboxname)
    {
        Dictionary<String, Folder> rtList = new System.Collections.Generic.Dictionary<string, Folder>();

        FolderId rfRootFolderid = new FolderId(WellKnownFolderName.Root, mbMailboxname);
        FolderView fvFolderView = new FolderView(1000);
        SearchFilter sfSearchFilter = new SearchFilter.IsEqualTo(FolderSchema.DisplayName, "Common Views");
        FindFoldersResults ffoldres = service.FindFolders(rfRootFolderid, sfSearchFilter, fvFolderView);
        if (ffoldres.Folders.Count == 1)
        {

            PropertySet psPropset = new PropertySet(BasePropertySet.FirstClassProperties);
            ExtendedPropertyDefinition PidTagWlinkAddressBookEID = new ExtendedPropertyDefinition(0x6854, MapiPropertyType.Binary);
            ExtendedPropertyDefinition PidTagWlinkGroupName = new ExtendedPropertyDefinition(0x6851, MapiPropertyType.String);

            psPropset.Add(PidTagWlinkAddressBookEID);
            ItemView iv = new ItemView(1000);
            iv.PropertySet = psPropset;
            iv.Traversal = ItemTraversal.Associated;

            SearchFilter cntSearch = new SearchFilter.IsEqualTo(PidTagWlinkGroupName, "Other Calendars");
            // Can also find this using PidTagWlinkType = wblSharedFolder
            FindItemsResults<Item> fiResults = ffoldres.Folders[0].FindItems(cntSearch, iv);
            foreach (Item itItem in fiResults.Items)
            {
                try
                {
                    object GroupName = null;
                    object WlinkAddressBookEID = null;

                    // This property will only be there in Outlook 2010 and beyond
                    //https://msdn.microsoft.com/en-us/library/ee220131(v=exchg.80).aspx#Appendix_A_30
                    if (itItem.TryGetProperty(PidTagWlinkAddressBookEID, out WlinkAddressBookEID))
                    {

                        byte[] ssStoreID = (byte[])WlinkAddressBookEID;
                        int leLegDnStart = 0;
                        // Can also extract the DN by getting the 28th(or 30th?) byte to the second to last byte 
                        //https://msdn.microsoft.com/en-us/library/ee237564(v=exchg.80).aspx
                        //https://msdn.microsoft.com/en-us/library/hh354838(v=exchg.80).aspx
                        String lnLegDN = "";
                        for (int ssArraynum = (ssStoreID.Length - 2); ssArraynum != 0; ssArraynum--)
                        {
                            if (ssStoreID[ssArraynum] == 0)
                            {
                                leLegDnStart = ssArraynum;
                                lnLegDN = System.Text.ASCIIEncoding.ASCII.GetString(ssStoreID, leLegDnStart + 1, (ssStoreID.Length - (leLegDnStart + 2)));
                                ssArraynum = 1;
                            }
                        }
                        NameResolutionCollection ncCol = service.ResolveName(lnLegDN, ResolveNameSearchLocation.DirectoryOnly, false);
                        if (ncCol.Count > 0)
                        {

                            FolderId SharedCalendarId = new FolderId(WellKnownFolderName.Calendar, ncCol[0].Mailbox.Address);
                            Folder SharedCalendaFolder = Folder.Bind(service, SharedCalendarId);
                            rtList.Add(ncCol[0].Mailbox.Address, SharedCalendaFolder);


                        }

                    }
                }
                catch (Exception exception)
                {
                    Console.WriteLine(exception.Message);
                }

            }
        }
        return rtList;
    }

干杯 格伦

Answer 2

Glen 帖子很完美，但绑定文件夹出错。但是我解决了这个问题。而不是这一行：

Folder SharedCalendaFolder = Folder.Bind(service, SharedCalendarId);

使用以下行进行共享文件夹绑定

CalendarFolder calendar = CalendarFolder.Bind(service, new FolderId(WellKnownFolderName.Calendar, OwnerEmailAddress), new PropertySet());

这里 OwnerEmailAddress 是所有者的电子邮件地址，如果使用 Glen 的代码，您可以编写 ncCol[0].Mailbox.Address。

Answer 3

您需要指定一个搜索过滤器。 这被描述为here，虽然我不确定哪个架构是正确的，但我的猜测会被归档。

所以你会做这样的事情：

SearchFilter searchFilter = new SearchFilter.IsEqualTo(FolderSchema.Archieved, false);

FindFoldersResults findFolderResults = service.FindFolders(WellKnownFolderName.MsgFolderRoot,searchFilter, view);