如何取回在QuickBooks API发票的PDF文件？
使用IPP.NET SDK V2.0.1，需要获得发票作为文件的PDF版本，就像它本来电子邮件发送给客户。
Using IPP.NET SDK v2.0.1, need to get a PDF version of an invoice as a file, just like it would have been e-mailed to a customer.
我已经从服务中检索到的发票对象。
I have the Invoice object retrieved from the service already.
如何才能做到这一点？
是不是在QBO V3 API服务尚不支持。此功能应包括在未来版本的API。
Is is not yet supported in QBO V3 API service. This feature should be included in future API releases.
附件不一样的，你在找什么。但尽管如此，你可以去看看，如果它提供你的目的。
https://developer.intuit.com/docs/0025_quickbooksapi/0050_data_services/020_key_concepts/attachments
Attachment is not same as what you are looking for. But still, you can have a look if it serves your purpose. https://developer.intuit.com/docs/0025_quickbooksapi/0050_data_services/020_key_concepts/attachments
此功能在QBO V2可用（现在是pcated德$ P $）。
https://developer.intuit.com/docs/95_de$p$pcated/qbo_v2/0400_qbo_v2_reference/invoice#Retrieving_an_Invoice_as_PDF
This feature was available in QBO V2( it is deprecated now). https://developer.intuit.com/docs/95_deprecated/qbo_v2/0400_qbo_v2_reference/invoice#Retrieving_an_Invoice_as_PDF
感谢