从 Outlook.MailItem 获取发件人返回 null

发布于 2025-01-17 20:44:20 字数 396 浏览 2 评论 0原文

我试图获取 Outlook.MailItem 的发件人（发件人），但没有成功。它返回空值。

我在下面尝试过。

尝试 1：

string from = omi.SenderEmailAddress;

尝试 2：

var exch = omi.Sender.GetExchangeUser(); // it returns null
if (exch != null)
{
    string from = exch.PrimarySmtpAddress;
}

我还检查了 omi.SenderEmailType 以查看类型是什么，它返回 null。

注意：omi 是 Outlook.MailItem 对象。

原文

I am trying to get the sender (From) of an Outlook.MailItem without success. It returns null.

I have tried below.

Attempt 1:

string from = omi.SenderEmailAddress;

Attempt 2:

var exch = omi.Sender.GetExchangeUser(); // it returns null
if (exch != null)
{
    string from = exch.PrimarySmtpAddress;
}

Also I have checked omi.SenderEmailType to see what type is, and it returns null.

Note: omi is an Outlook.MailItem object.

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毁我热情 2025-01-24 20:44:21

请记住，与发件人相关的属性仅在接收到的消息上填充。如果要在提交的消息上访问这些属性，则在发送消息并将其移至已发送项目文件夹之前，它们才会存在。

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徒留西风 2025-01-24 20:44:21

您可以查看 SendUsingAccount 属性。如果未设置，则可以使用命名空间。 CurrentUser 属性，以 Recipient 对象的形式返回当前登录用户的显示名称。

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〆一缕阳光ご 2025-01-24 20:44:21

假设您有一个outlook.mailitem，则不是null，则应该能够遵循此过程来检索发件人的电子邮件地址，从

string PR_SMTP_ADDRESS = @"http://schemas.microsoft.com/mapi/proptag/0x39FE001E";

if (omi == null)
{
    throw new ArgumentNullException();
}
if (omi.SenderEmailType == "EX")
{
    Outlook.AddressEntry sender = omi.Sender;
    
    if (sender != null)
    {
        // Now we have an AddressEntry representing the Sender
        if (sender.AddressEntryUserType == Outlook.OlAddressEntryUserType.olExchangeUserAddressEntry ||
            sender.AddressEntryUserType == Outlook.OlAddressEntryUserType.olExchangeRemoteUserAddressEntry)
        {
            // Use the ExchangeUser object PrimarySMTPAddress
            Outlook.ExchangeUser exchUser = sender.GetExchangeUser();
            
            if (exchUser != null)
            {
                return exchUser.PrimarySmtpAddress;
            }
            else
            {
                return null;
            }
        }
        else
        {
            return sender.PropertyAccessor.GetProperty(PR_SMTP_ADDRESS) as string;
        }
    }
    else
    {
        return null;
    }
}
else
{
    return omi.SenderEmailAddress;
}

Assuming you have an Outlook.MailItem that is not null, you should be able to follow this process to retrieve the sender's email address, adapted from the Microsoft Documentation.

string PR_SMTP_ADDRESS = @"http://schemas.microsoft.com/mapi/proptag/0x39FE001E";

if (omi == null)
{
    throw new ArgumentNullException();
}
if (omi.SenderEmailType == "EX")
{
    Outlook.AddressEntry sender = omi.Sender;
    
    if (sender != null)
    {
        // Now we have an AddressEntry representing the Sender
        if (sender.AddressEntryUserType == Outlook.OlAddressEntryUserType.olExchangeUserAddressEntry ||
            sender.AddressEntryUserType == Outlook.OlAddressEntryUserType.olExchangeRemoteUserAddressEntry)
        {
            // Use the ExchangeUser object PrimarySMTPAddress
            Outlook.ExchangeUser exchUser = sender.GetExchangeUser();
            
            if (exchUser != null)
            {
                return exchUser.PrimarySmtpAddress;
            }
            else
            {
                return null;
            }
        }
        else
        {
            return sender.PropertyAccessor.GetProperty(PR_SMTP_ADDRESS) as string;
        }
    }
    else
    {
        return null;
    }
}
else
{
    return omi.SenderEmailAddress;
}

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