Web Forms :: Display Products With Textboxes?

I need to display a list of products 1 below each other with a textbox, i will also need a checkbox that will hold the prodID. so i was thinking i need to do a loop but i am not sure how to do it. It needs to be like this

[checkbox(which will contain the prodID)] prodName Qty [textbox1] [textbox2]

so for each product in my products table i want to display it like above, now this is for a stock take module so the client will enter his values for each product in textbox1, when the client clicks the submit button, i will need to loop through the above products and calculate the difference if any so it will be (QTY - TEXTBOX1), if there is a difference the check the checkbox and display the difference in TEXTBOX2. so if the QTY = 10 and the client entered 8 in textbox1 then textbox2 should show you 2 and the checkbox should be checked. then the client will click the update button and it will loop through every product above and where the checkbox is checked, it should update the QTY of that product from the value entered in textbox1.