How do I convert PascalCase to kebab-case with C#?

Question

How do I convert a string value in PascalCase (other name is UpperCamelCase) to kebab-case with C#?

e.g. "VeryLongName" to "very-long-name"

Answer 1

Here is how to do that with a regular expression:

public static class StringExtensions
{
    public static string PascalToKebabCase(this string value)
    {
        if (string.IsNullOrEmpty(value))
            return value;

        return Regex.Replace(
            value,
            "(?<!^)([A-Z][a-z]|(?<=[a-z])[A-Z0-9])",
            "-$1",
            RegexOptions.Compiled)
            .Trim()
            .ToLower();
    }
}

Note: the @RossK92's recommendation about handling numbers has been applied