c# - 通过主 Smtp 地址查找 Exchange 用户

Question

我必须编写一个小型 C# 应用程序，该应用程序使用全球 Outlook 通讯簿从给定的电子邮件地址中查找 Exchange 用户。通过他的名字找到 Exchange 用户很简单，但是我如何通过他的主要 smtp 地址找到他？遍历整个 AddressList 不是一种选择，因为它很大（几乎 400k 条目），这需要很长时间。有没有更好更快的方法？

    public Outlook.ExchangeUser GetAddressBookEntry(string senderName, string senderAddress)
    {
        //Get Outlook address book
        Outlook.AddressList addressList = olNamespace.AddressLists["Globale Adressliste"];
        Outlook.AddressEntries addressEntries = addressList.AddressEntries;

        Outlook.ExchangeUser exUser = null;


        //Find corresponding entry in the address book
        //This always returns something even if the SenderName is not in the Address Book
        if (senderName != null)
        {
            Outlook.AddressEntry addressEntry = addressEntries[senderName];
            exUser = addressEntry.GetExchangeUser();
        }

        //Check if contact is correct (see above for reason)
        if (exUser != null && ((exUser.Name == senderName) || (exUser.PrimarySmtpAddress == senderAddress)))
        {
            return exUser;
        }

        //this loop takes a few minutes, it is not an option
        //not checking the address not implemented
        Debug.WriteLine("Count: " + addressEntries.Count);

        Stopwatch sw = new Stopwatch();
        sw.Start();
        for (int i = 1; i <= addressEntries.Count; i++)
        {
            Outlook.AddressEntry addressEntry = addressEntries[i];

            if (i % 1000 == 0)
            {
                Debug.WriteLine(i);
            }
        }
        sw.Stop();
        Debug.WriteLine("Seconds: " + sw.Elapsed.TotalSeconds);

        return null;
    }

Answer 1

调用 Namespace.CreateRecipient，调用 Recipient.Resolve，然后使用 Recipient.AddressEntry 属性。