Split a string by capital letters

> Possible Duplicate:
> Regular expression, split string by capital letter but ignore TLA

I have a string which is a combination of several words, each word is capitalized.
For example: SeveralWordsString

Using C#, how do I split the string into "Several Words String" in a smart way?

Thanks!

Use this regex (I forgot from which stackoverflow answer I sourced it, will search it now):

 public static string ToLowercaseNamingConvention(this string s, bool toLowercase)
        {
            if (toLowercase)
            {
                var r = new Regex(@"
                (?<=[A-Z])(?=[A-Z][a-z]) |
                 (?<=[^A-Z])(?=[A-Z]) |
                 (?<=[A-Za-z])(?=[^A-Za-z])", RegexOptions.IgnorePatternWhitespace);
 
                return r.Replace(s, "_").ToLower();
            }
            else
                return s;
        }

I use it in this project: http://www.ienablemuch.com/2010/12/intelligent-brownfield-mapping-system.html

[EDIT]

I found it now: https://stackoverflow.com/questions/2559759/how-do-i-convert-camelcase-into-human-readable-names-in-java

Nicely split "TodayILiveInTheUSAWithSimon", no space on front of " Today":

using System;
using System.Text.RegularExpressions;

namespace TestSplit
{
	class MainClass
	{
		public static void Main (string[] args)
		{
			Console.WriteLine ("Hello World!");
			
			
			
			var r = new Regex(@"
                (?<=[A-Z])(?=[A-Z][a-z]) |
                 (?<=[^A-Z])(?=[A-Z]) |
                 (?<=[A-Za-z])(?=[^A-Za-z])", RegexOptions.IgnorePatternWhitespace);
			
			
			string s = "TodayILiveInTheUSAWithSimon";
            Console.WriteLine( "YYY{0}ZZZ", r.Replace(s, " "));
		}
	}
}

Output:

 YYYToday I Live In The USA With SimonZZZ

string[] SplitCamelCase(string source) {
    return Regex.Split(source, @"(?<!^)(?=[A-Z])");
}

Sample:

https://dotnetfiddle.net/0DEt5m

You can just loop through the characters, and add spaces where needed:

string theString = "SeveralWordsString";

StringBuilder builder = new StringBuilder();
foreach (char c in theString) {
  if (Char.IsUpper(c) && builder.Length > 0) builder.Append(' ');
  builder.Append(c);
}
theString = builder.ToString();

    public static IEnumerable<string> SplitOnCapitals(string text)
    {
        Regex regex = new Regex(@"\p{Lu}\p{Ll}*");
        foreach (Match match in regex.Matches(text))
        {
            yield return match.Value;    
        }
    }

This will handle Unicode properly.

            string str1 = "SeveralWordsString";
            string newstring = "";
            for (int i = 0; i < str1.Length; i++)
            {
                if (char.IsUpper(str1[i]))
                    newstring += " ";                    
                newstring += str1[i].ToString();
            }