Question

我刚刚发现了Exchanged Web Services Managed API，我一直在玩它以尝试获得理解，因为我相信它可以为我一直在努力解决的问题提供解决方案。 / p>

背景

我已经阅读了很多文档并且对事物有了一般的认识。特别是，我设置了与此LINK非常相似的内容。

但是，我想显示一个文件夹，然后在文件夹后显示所有相关的EmailMessage项目，依此类推，直到所有文件夹/子文件夹。我到目前为止编写的代码将列出一个文件夹，但它会列出我返回的所有电子邮件，而不仅仅是那些与该文件夹相关的电子邮件。我正在搜索未读的项目，只是为了暂时保持列表的小。

代码

private static void GetAllItems(ExchangeService service)
    {
        List<Folder> lstFolderIds = new List<Folder>();

        // Fill list with all public folders and sub-folders
        GetAllFolders(service, lstFolderIds);

        List<EmailMessage> emails = new List<EmailMessage>();

        foreach(Folder folder in lstFolderIds)
        {
            SearchFilter sf = new SearchFilter.SearchFilterCollection(LogicalOperator.And, new SearchFilter.IsEqualTo(EmailMessageSchema.IsRead, false));
            ItemView view = new ItemView(int.MaxValue);
            view.PropertySet = PropertySet.IdOnly;

            FindItemsResults<Item> searchResults = service.FindItems(folder.Id, sf, view);

            if (searchResults.Items.Count > 0)
            {
                foreach (var item in searchResults.Items)
                {
                    try
                    {
                        if (item is EmailMessage)
                        {
                            emails.Add((EmailMessage)item);
                        }
                    }
                    catch (Exception ex)
                    {
                        Console.WriteLine("Exception: {0}", ex.Message);
                        Console.WriteLine("Stack Trace: {0}", ex.StackTrace);
                        Console.WriteLine("Source: {0}", ex.Source);
                        Console.WriteLine("HResult: {0}", ex.HResult);
                    }
                }
            }
        }

        PropertySet properties = (BasePropertySet.FirstClassProperties);
        service.LoadPropertiesForItems(emails, properties);

        foreach (Folder folder in lstFolderIds)
        {
            object folderName;
            object displayName;
            object childFolderCount;
            object unreadCount;
            object totalCount;

            folderName = folder.TryGetProperty(FolderSchema.ParentFolderId, out folderName) ? folder.ParentFolderId.FolderName.Value.ToString() : "N/A";
            displayName = folder.TryGetProperty(FolderSchema.DisplayName, out displayName) ? folder.DisplayName.ToString() : "N/A";
            childFolderCount = folder.TryGetProperty(FolderSchema.ChildFolderCount, out childFolderCount) ? folder.ChildFolderCount.ToString() : "N/A";
            unreadCount = folder.TryGetProperty(FolderSchema.UnreadCount, out unreadCount) ? folder.UnreadCount.ToString() : "N/A";
            totalCount = folder.TryGetProperty(FolderSchema.TotalCount, out totalCount) ? folder.TotalCount.ToString() : "N/A";

            Console.WriteLine("Parent Folder: {0}", folderName);
            Console.WriteLine("Folder Display Name: {0}", displayName);
            Console.WriteLine("Child Folder Count: {0}", childFolderCount);
            Console.WriteLine("Folder Unread Count: {0}", unreadCount);
            Console.WriteLine("Folder Total Count: {0}", totalCount);
            Console.WriteLine("---------------------------------------------------------");
            foreach (EmailMessage email in emails)
            {
                object parentFolderName;
                object subject;
                object retentionDate;

                parentFolderName = email.TryGetProperty(EmailMessageSchema.ParentFolderId, out parentFolderName) ? email.ParentFolderId.FolderName.Value.ToString() : "N/A";
                subject = email.TryGetProperty(EmailMessageSchema.Subject, out subject) ? email.Subject.ToString() : "N/A";
                retentionDate = email.TryGetProperty(EmailMessageSchema.RetentionDate, out retentionDate) ? retentionDate.ToString() : "N/A";

                Console.WriteLine("\tParent Folder Name: {0}", parentFolderName);
                Console.WriteLine("\tSubject: {0}", subject);
                Console.WriteLine("\tRetention Date: {0}", retentionDate);
                //}                    
            }

            Console.WriteLine("");
            Console.WriteLine("Press or select Enter...");
            Console.Read();
        }
    }

部分问题在于我无法弄清楚如何获取文件夹的文件夹名称或EmailMessage的父文件夹名称。我可以获取文件夹的文件夹ID和EmailMessage的父文件夹ID，但它们对于返回的所有项目都是相同的，所以它一定不对。

我在这篇LINK中读到，我可能需要执行额外的绑定来将文件夹与EmailMessage项目联系起来，但我不确定如何做到这一点。

预期输出

Parent Folder: 
Folder Display Name: Inbox
Child Folder Count: 1
Folder Unread Count: 2
Folder Total Count: 51
---------------------------------------------------------
    Parent Folder Name: Inbox
    Subject: New Coversheets for TPS Reports
    Retention Date: 10/31/2017 11:59:59 PM

    Parent Folder Name: Inbox
    Subject: Have you seen my stapler?
    Retention Date: 07/31/2017 11:59:59 PM

Parent Folder: 
Folder Display Name: Sent Items
Child Folder Count: 0
Folder Unread Count: 0
Folder Total Count: 27
---------------------------------------------------------
    No Un-Read Items

问题

如何列出与我的搜索条件匹配的相关EmailMessages的文件夹层次结构？
我目前是否正在获取MsgFolderRoot的ID的FolderId / ParentFolderId是否有任何方法可以告诉？
如何获取Folder.FolderId.FolderName.Value和EmailMessage.ParentFolderId.FolderName.Value？
如果＃2需要绑定，是否有人会有一个示例或链接，他们会分享说明该操作？

更新（S）

在问题之前添加了预期输出的部分。

感谢。

Answer 1

在仔细阅读对象浏览器后，我发现FolderName属性的使用与FolderId属性互斥，这解释了为什么我的parentFolderId.FolderName.Value代码始终返回null。 / p>

我重新组织了我的代码来构建层次结构，并使用ParentFolderId属性将EmailMessage绑定到父文件夹，这样我就可以获得父文件夹{{1} } property。

如何使用Exchange Web服务托管API列出这些文件夹中的所有文件夹和文件？

1 个答案: