Question

Are there any globalization issues using ‘==‘ operator and string.Equals() method for comparing a string? If yes what is the solution to avoid this?

Answer 1

With String.Equals, you can use StringComparison.InvariantCultureIgnoreCase or StringComparison.InvariantCulture, With == you can’t do that.

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Code Snippet from the same article:

using System;
using System.Globalization;
using System.Threading;
internal class Program
{
    private static void Main(string[] args)
    {      
        Thread.CurrentThread.CurrentCulture = new CultureInfo("tr-TR");
        const string input = "interesting";

        bool comparison = input.ToUpper() == "INTERESTING";

        Console.WriteLine("These things are equal: " + comparison);
        Console.ReadLine();
    }
}

The above will return a false for the equal comparison using == operator

You may try the following line in the code above

 bool Comparison2 = input.Equals("INTERESTING",
                                  StringComparison.InvariantCultureIgnoreCase);

and the result will be true