Date: 2022jan18 Language: C# Keywords: comparison Q. C#: case-insensitive string compare A. Use String.Compare() with third parameter=true

public static bool ceq(string a, string b) { if (a == null && b == null) return true; if (a == null || b == null) return false; return String.Compare(a, b, true) == 0; }

// Another way public static bool ceq2(string a, string b) { if (a == null && b == null) return true; if (a == null || b == null) return false; return a.Equals(b, StringComparison.InvariantCultureIgnoreCase); }