Maybe a bug. Electron.Screen.GetPrimaryDisplayAsync();

[markatosi]

• Version: 0.2

• Target: .net 10.0, electron 38.2.2 node v22.12.0

Steps to Reproduce:

1. Try to use await Electron.Screen.GetPrimaryDisplayAsync();
2. Error:System.TimeoutException: No response after 1000ms trying to retrieve value screen.GetPrimaryDisplayAsync()

The Screen id is set to -1 so that's probably not correct.

[softworkz]

I'm not sure how you got to those results.

The GetPrimaryDisplayAsync() method is tested by the Primary_display_has_positive_dimensions test which is succeeding on all platforms (e.g. https://github.com/ElectronNET/Electron.NET/actions/runs/19494438431)

[markatosi]

I have no idea either :-) All I did was migrate from electron-sharp to ElectronNet Core.
I did test on MacOS 26.1 and 15.4.

I also tested the bare bones demo app. Doesn't work on that one either.

Is there anything you can recommend that I do to prove that it's not working for me?

[softworkz]

Is it like that's the one thing not working and everything else is fine, or is this the first thing your app does and you didn't look any further?

Is there anything you can recommend that I do to prove that it's not working for me?

A minimal app which exposes that problem would be helpful to look at what you are doing. (unless your code is open anyway.. :-)

[markatosi]

That was the only thing that I noticed wasn't working. Everything else has been fine. Code isn't open but the minimal app i can post

[softworkz]

Is there anything you can recommend that I do to prove that it's not working for me?

You could check out the develop branch and run dotnet test on that machine, so that we have a baseline (known to be working) for comparison.

[softworkz]

That includes the test for the screen.API.

[markatosi]

Full error from the minimal app.

warn: Microsoft.AspNetCore.Components.Server.Circuits.RemoteRenderer[100]
      Unhandled exception rendering component: No response after 1000ms trying to retrieve value screen.GetPrimaryDisplayAsync()
      System.TimeoutException: No response after 1000ms trying to retrieve value screen.GetPrimaryDisplayAsync()
         at BlazorApp1.Components.Pages.Counter.IncrementCount() in /Volumes/Repos_APFS/source/electron/BlazorApp1/Components/Pages/Counter.razor:line 18
         at Microsoft.AspNetCore.Components.ComponentBase.CallStateHasChangedOnAsyncCompletion(Task task)
         at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle, ComponentState owningComponentState)
fail: Microsoft.AspNetCore.Components.Server.Circuits.CircuitHost[111]
      Unhandled exception in circuit 'MNA7dNRZPzivVU5nG-BitNuuwFbp8AR4b3LgQ9kMH0I'.
      System.TimeoutException: No response after 1000ms trying to retrieve value screen.GetPrimaryDisplayAsync()
         at BlazorApp1.Components.Pages.Counter.IncrementCount() in /Volumes/Repos_APFS/source/electron/BlazorApp1/Components/Pages/Counter.razor:line 18
         at Microsoft.AspNetCore.Components.ComponentBase.CallStateHasChangedOnAsyncCompletion(Task task)
         at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle, ComponentState owningComponentState)

[softworkz]

This is not the default app startup. How do you do this?

Did you look at the example AspNet app?

Most likely you're just doing this too early?

[markatosi]

https://github.com/markatosi?tab=repositories BlazorApp1

The call to the method is via the counter button on the counter.razor

[softworkz]

I've cloned it. But I need to get some sleep. Will look at it tomorrow.

[markatosi]

Did you look at the example AspNet app?

Most likely you're just doing this too early?

I just followed the Blazor setup that is on the home page for this project with the exception of the WASM stuff since this is a blazor server app.

[markatosi]

Test Results osx-arm64 Main branch

All tests from Solution.txt

[markatosi]

Test Results osx-arm64 develop branch

All tests from Solution Dev.txt