从Outlook Contacts访问“Business Street”属性

Question

我将Outlook联系人导出到.csv文件并将所有Outlook联系人放入List<Outlook.ContactItem> contactItems我创建了一个名为ConvertToCSV（）的方法来提取特定联系人的每个属性。在此方法中，我们将每个联系人的属性添加到List，如下所示代码：

 private void ConvertToCSV(List<Outlook.ContactItem> contactItems)
    {      
        using (var file = File.CreateText(@"D:\ExportContacts1.CSV"))
        {
            file.WriteLine(ContactItemsListToCSV());
            foreach (var arr in contactItems)
            {
                List<string> list = new List<string>();
                list.Add(arr.Title);
                list.Add(arr.FirstName);
                list.Add(arr.MiddleName);
                list.Add(arr.LastName);
                list.Add(arr.BusinessAddress);
                list.Add(arr.BusinessAddressStreet);                   
                list.Add(arr.BusinessAddressCity);
                list.Add(arr.BusinessAddressState);
                list.Add(arr.BusinessAddressPostalCode);
                list.Add(arr.BusinessAddressCountry);
                //and other properties of Outlook ContactItem 
              file.WriteLine(list[0] + "," + list[1] + "," + list[2] + "," + list[3]);
              //adding other list items too        
  } 

当我看到Outlook创建的.csv文件时，我看到三个属性：Business street, Business Street 2, Business Street 3。我应该在上面的代码中绑定哪一个？在Outlook联系人中，我将树结构视为：

      Business Address
          Business Street
          Business Street 2
          Business Street 3
          ...and so on

如何从Outlook访问这些属性，以便我可以获得与Outlook生成的相同的.csv文件？有什么建议吗？