is StringComparison.Ordinal the same as InvariantCulture for testing equality?

Question

From their brief summary descriptions, it sounds like the string comparison rules StringComparison.Ordinal and StringComparison.InvariantCulture ar

Answer 1

It does matter, for example - there is a thing called character expansion

    var s1 = "Strasse";
    var s2 = "Straße";

    s1.Equals(s2, StringComparison.Ordinal);          // false
    s1.Equals(s2, StringComparison.InvariantCulture); // true

With InvariantCulture the ß character gets expanded to ss.