The life of a code monkey

Displaying camel case

Sometimes it is convenient to convert a string that is in camel case (variable name, enum value, method name etc.) to a well formatted string that look nice to an average user. 

The following Regex will find all capital letters that are surrounded by lower-case letters.

(?<=[a-z])(?<Letter>[A-Z])(?=[a-z])

Here is the complete program for testing.

class Program
{
    static void Main(string[] args)
    {
        Console.WriteLine("Enter a camel case string");
        string camelCaseString = Console.In.ReadLine() ?? string.Empty;
        var regex = new Regex("(?<=[a-z])(?<Letter>[A-Z])(?=[a-z])");
        Console.WriteLine(regex.Replace(camelCaseString, " ${Letter}"));
        Console.ReadLine();
    }
}