Can't manage to write to Console or Debug panel using Visual Studio 2017 C# .NET

Question

I have a small program in C# .NET on VS2017 Community. I can't mangage to write anything to the Console, when launching the program from there. I can't manage either to write anything to the debug panel in VS2017 while debugging.

I tried those 3 differents lines :

    System.Diagnostics.Debug.WriteLine("test");
    Console.WriteLine("test");
    System.Diagnostics.Trace.Write("test");

I tried both Windows Application and Console Application. I'm a bit lost now... any help would be greatly appreciated !

Thank you all in adavance.

Encore.