using System;

using System.Globalization;

using System.Linq;

public class Program

{

    public static void Main()

    {

        string[] vals = { "225.0", "225.0", "225.0" };

        double num = 225.0;

        if (Convert.ToDouble(vals[0], CultureInfo.InvariantCulture) == num)

            Console.WriteLine("First check works!");

        if (vals.All(x => Convert.ToDouble(x, CultureInfo.InvariantCulture) == num))

            Console.WriteLine("Second check works!");

    }

}