using System;

public class Test
{
	public static void Main()
    {
        string str = "fnGetDate('d',-1+ cint(cbool(DatePart('w',Date())<=2)) + cint(cbool(DatePart('w',Date())=2)))";
        int parLevel = 0;
        List<string> arguments = new List<string>();
        string currentString = String.Empty;

        foreach (char t in str)
        {
            switch (t)
            {
                case '(':
                    if (t == '(') parLevel++;
                    break;
                case ')':
                    if (t == ')') parLevel--;
                    break;
                case ',':
                    if (parLevel > 1) continue;

                    arguments.Add(currentString);
                    currentString = String.Empty;
                    break;
                default:
                    if (parLevel == 0) continue;

                    currentString += t;
                    break;
            }
        }
        if (!String.IsNullOrEmpty(currentString)) arguments.Add(currentString);

        for (int i = 0; i < arguments.Count; i++)
            Console.WriteLine("Argument {0}: {1}", i, arguments[i]);
    }
}