Splitting CamelCase

Question

This is all asp.net c#.

I have an enum

public enum ControlSelectionType 
{
    NotApplicable = 1,
    SingleSelectRadioButtons = 2,
    SingleSelectD         


        

Answer 1

Simple version similar to some of the above, but with logic to not auto-insert the separator (which is by default, a space, but can be any char) if there's already one at the current position.

Uses a StringBuilder rather than 'mutating' strings.

public static string SeparateCamelCase(this string value, char separator = ' ') {

    var sb = new StringBuilder();
    var lastChar = separator;

    foreach (var currentChar in value) {

        if (char.IsUpper(currentChar) && lastChar != separator)
            sb.Append(separator);

        sb.Append(currentChar);

        lastChar = currentChar;
    }

    return sb.ToString();
}

Example:

Input  : 'ThisIsATest'
Output : 'This Is A Test'

Input  : 'This IsATest'
Output : 'This Is A Test' (Note: Still only one space between 'This' and 'Is')

Input  : 'ThisIsATest' (with separator '_')
Output : 'This_Is_A_Test'