sorry, don't know the correct C# syntax, but do not use the "New" designation on the declaration of "frm", as you are not creating am instance of the Html Form tag, you are going to be referencing an existing one
also, use "Master.FindControl", not "Parent.FindControl", that for sure will goto the Master (as there might be situations where "Parent" won't)
I promise this works, i have this exact code working 100% on a live site right now
"If you make it idiot proof, they'll build a better idiot"