What is wrong in this?

HTML Code:
Binding handlerBalance = new Binding("Text", dtcatalogo, "balance_inicial");
handlerBalance.Format+=new ConvertEventHandler(MoneyTostring);        
handlerBalance.Parse+=new ConvertEventHandler(stringToMoney);   
txtbalance_inicial.DataBindings.Add(handlerBalance);
When i try to run the program i got an error.
I have the same on other program and everything is ok.
Any hlp?