i have created the gridview which has following fields Qty,Itemname,Retail_price and total_price...here qty is a templatefield column which has textbox(in gridview) to get the input from user...itemname column contains the name of the product,retail price column contains cost of the prodcut...now i want the total_price column will update based on the qty....
for ex :
if the mouse(product name) =200rs(retail price)
when i enter ' 2 ' in qty , the total price will update to '400'
how to do this?
any one plz quide me!!!!!!!!!!!!