[C#] Improving my ToProper() Function

[wey97]

Can you code it better?

public string ToProper(string src)
{
	string[] s = src.Split(new char[] { ' ' });
	string retval = String.Empty;
	int n = 0;

	foreach (string str in s)
	{
		if (str == String.Empty)
		{
			retval += " ";
		}
		else
		{
			retval += (str[0].ToString().ToUpper() +
				str.Substring(1, str.Length - 1).ToLower() +
				(n < s.Length - 1 ? " " : ""));
		}

		n++;
	}

	return retval;
}