public static void Main()
var plagKenneth3 = "alle fugler små de er";
Console.WriteLine("1: " + plagKenneth1.ToUpperFirstCharacter());
Console.WriteLine("2: " + plagKenneth2.ToUpperFirstCharacter());
Console.WriteLine("3: " + plagKenneth3.ToUpperFirstCharacter());
public static class StringExtensions
public static string ToUpperFirstCharacter(this string value)
if (string.IsNullOrEmpty(value))
return char.ToUpper(value[0]) + value[1..];