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Hi, team
I am trying to use WinRT API (under name space Windows.Networking.NetworkOperators) to read ESim ID on my laptop. I created a UWP App and this api worked. However the project i'm working on is not a UWP app and it's based on .NET 4.6. I imported WinRT APIs by nuget and tested two classes under this namespace (MobileBroadbandModem and EsimManager). MobileBroadbandModem returned the information successfully but EsimManager failed when i tried to call EsimManager.TryCreateESimWatcher(). This function just returned null. I saw that there are some APIs require Package Identity to work normally. But I didn't see Windows.Networing.NetworkOperators on the list. So could you please tell me if this funtion requires Package Identity? If not, what's the possible reason that this funtion works in a UWP App but fails in my project on the same device? Thanks.
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To help us understand your issue better, please share the following information. Could you please tell me if your app is a WPF application? Besides, EsimManager class needs a custom capability, did you add that in your no-uwp application?
No, it's not a WPF application. It's a .exe background library without user interface (attached picture is from Visual Studio project property).
Since it's a non-uwp application and it doesn't need packaging, there is no package.appxmanifest file where i put custom capability in the UWP App.
And I also created a blank Console App based on .net 4.6 and called the same funtions using Api from imported WinRT nuget. The result was the same, MobileBroadbandModem worked while EsimManager failed.
I didn't implement any capability in my project or in this blank Console App. And from the documentation, MobileBroadbandModem also needs Restricted Capability declaration yet it still successfully return the value i want. So I wonder if this problem cause by package identity.
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May I know how do you use EsimManager in .NET framework project? I created a console project and added the Microsoft.Windows.SDK.Contracts NuGet package but namespace Windows.Networking.NetworkOperators is not available
It's a third-party nuget package integrated with Windows.winmd and System.Runtime.WindowsRuntime.dll. More like directly adding these two ItemGroup into .csproj instead of using Microsoft.Windows.SDK.Contracts.
I dont know if this is a legal way and if this caused my problem. But by doing this, Windows.Networking.NetworkOperators is available in .net4.6 console app. And the result keeps the same, MobileBroadbandModem works but EsimManager not.
From the doc: return null if the caller's user security identifier (SID) is not authorized by the Windows service that handles eSIM-related operation requests. For your reference: https://learn.microsoft.com/en-us/answers/questions/1609103/how-to-make-esimwatcher-object-work-in-c
For your scenario, I suggest that you might need to open a support ticket for this. Please contact our paid support at MS Support. You will get 1:1 support on that. Please kindly note that your support ticket will be free if it is Microsoft's issue.
Thanks for your suggestion, I'll consider to turn to MS Support for help. One more thing is that are there docs about how custom capability being verified? Both in package.appxmanifest and .sscd file when related to hardware driver. It would helpful if there are docs about this.
There is a Custom Capability sample:
https://learn.microsoft.com/en-us/samples/microsoft/windows-universal-samples/customcapability/