It has to be capable of running standalone with no network or internet connection available. Is there any software you can install on the iPad Pro/Mac to make this happen. While you can develop iOS applications on Windows, using any number of third-party methods, you must have a macOS device in order to publish that application. When I say iOS/MacOS, I mean iPad Pro of some version and/or on a Mac laptop or computer. What changes you would have to make to your current project is beyond the scope of this particular community. While it is possible to develop an application that supports both macOS and Windows, the developer must specifically design their application in a way, where that is indeed possible. I have never written for a Mac so have no idea where to start and don't really want to go down a long road to write one and then have two apps to maintain. I have a Windows app that I have written and it's quite complex. NET Core Framework will depend on the exact version you are using. 'Click Once' applications only support compatible versions of Windows.
It is worth pointing out that at this time MS SQL Server CE can only be installed on Windows. NET Core application that runs on Windows and macOS. Is it possible to install and run Windows applications on iOS or macOS?