Help! I need to generate a query with loops,but there must be undefinitly numbers of loop or much as many a client wants. I know that it can be done with recursion,but don't know exectly how.One more thing. Notice,please,that I need to use those k,i,j iterators later in "if" condition and I don't know how to catch them. Thanks

class Class1
    {
        public void ListQuery()
        {
            for (int k = 0; k < listbox1.Count; k++)
            {
                for (int i = 0; i < listbox2.Count; i++)
                {
                    for (int j = 0; j < listbox3.Count; j++)
                    {
                        if (k == listbox1.count-1 && i == listbox2.count-1 && j == listbox3.count-1)
                        {
                            if (!checkbox1) Query += resultset.element1 + "=" + listbox1[k];
                            if (!checkbox2) Query += resultset.element2 + "=" + listbox1[i];
                            if (!checkbox3) Query += resultset.element3 + "=" + listbox1[j];
                        }
                    }
                }
            }
        }
    }