TTL

This article describes design and implementation of the Blob lifetime in the Azure Container.

I don't know Which API can open printer properties dialog. Printer properties dialog contain "Print test page". I know some examples(https://www.codeproject.com/Articles/14379/How-to-show-a-popup-window-for-printer-properties) for this,but All open "printing preferences"dialog,not "printer...

System.Drawing.Printing Namespace[^]

This is quite a bit off-topic for this site. You're best bet is going to be forums dedicated to Cisco routers. There is no such thing here.