Overwrite the == operator globally

Question

In a lot of places I'm using the == operator to compare the string, now I know this considers casing... Is there anyway I can adjust the culture settings to avoid this or do I have to go to every line of code and change it to

string.Compare(a,b,StringComparison.CurrentCultureIgnoreCase)

Answer 1

How about a string extension method?:

public static class StringExtensions {
    public static bool EqualsIC(this string self, string string1) {
        return self.Equals(string1, StringComparison.InvariantCultureIgnoreCase);        
    }
}

Then you can just use

string string1 = "Hello world";
string string2 = "hEllO WOrLD";
bool theymatch = string1.EqualsIC(string2);

// OR (per TimS' comment) - to avoid error if string1 is null
theymatch = StringExtensions.EqualsIC(string1, string2);

As an esoteric alternative, you could use Regex instead of String.Compare:

public static bool EqualsICRX(this string self, string string1) {
    return Regex.IsMatch(string1, "^" + self + "$", RegexOptions.IgnoreCase);
}