Stucked

I am making a general store application from visual studio 2010 and Got a minor but an irritating problem. I was trying to display the name of the Product from the database of #StockItems where i kept the #ProductCode, #ProductName field. I wanted to type in a text box the product code of the item.... which should retrieve the name of the Product from #ProductName field of the same table. But no code seems to work....Could you please help me get the code that will automatically write to the #labelProductName when Typed into The #TextBoxProductCode retrieving he name from the table of #BBSM.mdb named #StockItems