Make DateTime.Now Display European Format Globally on Linux

I’m running a .NET Core app which contains DateTime.Now.ToString(). When on my PC it displays European date format (dd/mm/yy) but when running on a Linux VM located in the US it displays American date format (mm/dd/yy) despite the timezone on the VM being GMT.

How can I make it display only European date format?

I know I can format it manually inside the program, but is there a way to do this globally on the Linux system?

Answer

To set a culture for all application threads you can use CultureInfo.DefaultThreadCurrentCulture property, like that

if (Thread.CurrentThread.CurrentCulture.Name == "en-US")
{
      culture = CultureInfo.CreateSpecificCulture("...");

      CultureInfo.DefaultThreadCurrentCulture = culture;
      CultureInfo.DefaultThreadCurrentUICulture = culture;
}

You are checking that current culture is en-US and update the default culture to any EU specific culture, like de-DE or fr-FR for example. You can also refer to MSDN for details