Question

我有一个outlook插件，它运行在一堆文件夹中，将它们保存到磁盘并将它们移动到垃圾文件夹。

我添加的代码适用于99％的电子邮件。一堆try缓存用于调试，所以请忽略它们。

它每天提取几千封邮件，适用于所有内容，但一个文件夹中的邮件除外。

我检查项目是否是MailItems并且所有内容都检出，但是一旦我尝试获取它的属性，它就会给我这种类型的错误。

不支持此类接口（来自HRESULT的异常：0x80004002   （E_NOINTERFACE））

10:57:51 AM：at   Microsoft.Office.Interop.Outlook._MailItem.get_ReceivedTime（）

该方法会根据我尝试访问的内容而发生变化。

一直在寻找解决方案，但无济于事。

请帮忙。

 while (unreadFolders.Count > 0 && count < COUNT)
            {
                Outlook.Folder currentFolder = unreadFolders.FirstOrDefault().Key;
                string path = unreadFolders.FirstOrDefault().Value;
                Debug.WriteLine("reading folder: " + currentFolder.Name);
                unreadFolders.Remove(currentFolder);

                Outlook.Folder parent = GetParent(currentFolder);
                var t = parent?.FullFolderPath;
                //replenish the list
                foreach (Outlook.Folder f in currentFolder.Folders) unreadFolders.Add(f, path + "\\" + f.Name);

                //create directory if it doesnt exist
                Directory.CreateDirectory(path);

                Outlook.Items items = currentFolder.Items;
                foreach (var item in items)
                {
                    if (item != null && item is Outlook.MailItem)
                    {
                        if (count++ > COUNT) break;
                        var mailItem = (Outlook.MailItem)item;
                        if (mailItem == null) continue;
                        var fullpath = path + "\\";
                        try
                        {
                            fullpath += "[(R)" + mailItem.ReceivedTime.ToWeirdDateFormat() + "]";
                        }
                        catch (Exception ex)
                        {
                            using (StreamWriter file = new StreamWriter(@"C:\\temp\logs.txt", true))
                            {
                                file.WriteLine(DateTime.Now.ToLongTimeString() + ":\t\tReceived Time Broken");
                                file.WriteLine(DateTime.Now.ToLongTimeString() + ":\t\t" + ex.Message);
                                file.WriteLine(DateTime.Now.ToLongTimeString() + ":\t\t" + ex.StackTrace);
                            }
                        }
                        try
                        {
                            fullpath += "[(T)" + mailItem.To.MakeWindowsSafe() + "]";
                        }
                        catch (Exception ex)
                        {
                            using (StreamWriter file = new StreamWriter(@"C:\\temp\logs.txt", true))
                            {
                                file.WriteLine(DateTime.Now.ToLongTimeString() + ":\t\tTo Broken");
                                file.WriteLine(DateTime.Now.ToLongTimeString() + ":\t\t" + ex.Message);
                                file.WriteLine(DateTime.Now.ToLongTimeString() + ":\t\t" + ex.StackTrace);
                            }
                        }
                        try
                        {
                            fullpath += "[(F)" + mailItem.SenderName.MakeWindowsSafe() + "]";
                        }
                        catch (Exception ex)
                        {
                            using (StreamWriter file = new StreamWriter(@"C:\\temp\logs.txt", true))
                            {
                                file.WriteLine(DateTime.Now.ToLongTimeString() + ":\t\tSender name Broken");
                                file.WriteLine(DateTime.Now.ToLongTimeString() + ":\t\t" + ex.Message);
                                file.WriteLine(DateTime.Now.ToLongTimeString() + ":\t\t" + ex.StackTrace);
                            }
                        }
                        try
                        {
                            fullpath += "[+][(S)" + mailItem.Subject.MakeWindowsSafe() + "]";
                        }
                        catch (Exception ex)
                        {
                            using (StreamWriter file = new StreamWriter(@"C:\\temp\logs.txt", true))
                            {
                                file.WriteLine(DateTime.Now.ToLongTimeString() + ":\t\tSubject Broken");
                                file.WriteLine(DateTime.Now.ToLongTimeString() + ":\t\t" + ex.Message);
                                file.WriteLine(DateTime.Now.ToLongTimeString() + ":\t\t" + ex.StackTrace);
                            }
                        }
                        fullpath += ".msg";
                        //save message to directory
                        mailItem.SaveAs(fullpath, Outlook.OlSaveAsType.olMSG);

                        //move message to deleted
                        if (parent == null)
                        {
                            using (StreamWriter file = new StreamWriter(@"C:\\temp\logs.txt", true))
                            {
                                file.WriteLine(DateTime.Now.ToLongTimeString() + ":\t\tParent Null");
                                file.WriteLine(DateTime.Now.ToLongTimeString() + ":\t\t" + currentFolder.FullFolderPath);
                            }
                        }
                        else
                        {
                            mailItem.Move(parent.Folders["Deleted Items"]);
                        }
                    }
                }
            }

Answer 1

检查MailItem.Class属性的值 - 它可能是46（OlObjectClass.olReport）（并且MailItem.MessageClass将是REPORT.IPM.Note.NDR）。无法传递的报告消息是ReportItem对象，但它们可能被视为MailItem对象，从而通过您的评估。

另外请确保使用向后计数器循环，因为您可能通过将项目移动到另一个文件夹来修改集合（此外，每个循环都不适合与Outlook对象一起使用）。在包含Outlook对象的变量上调用Marshal.ReleaseCOMObject也是一个好主意。

未能获得有关MailItem

1 个答案: