using System.Globalization;
public static void Main()
CultureInfo.CurrentCulture = new CultureInfo("sv-SE");
Console.WriteLine("Same: " + ((-1).ToString() == "-1"));
Console.WriteLine("Same: " + ((-1).ToString(CultureInfo.InvariantCulture) == "-1"));
Console.WriteLine("Same: " + ((-1).ToString().Equals("-1", StringComparison.InvariantCulture)));