i already got it sir.tnx for your help..im the same person asking about that listview that has quantity unit.product..remember sir?? not yet finished with supplies inventory system..haha.. im so doom with my professor.. haha..they dont teach vb.net at software engineering subject.. tnx again sir

thank you sir.. i got it..but it got another error saying
Conversion from string "" to type 'Double' is not valid. in this line

 txtOnHand.Text = CSng(txtQuantity.Text) - txtDeliver.Text

how is that sir?? can u post how to? base on my code?.

pls

again..thank you so much

sir...thank you very very very much..tnx a lot u saved me.. im gonna pass this tomorrow.. thank u very much sir More Powers and blessings.. sorry sir,im just a newbie here..

one more sir.. can u see sir all the quantity?? its data type is number.how can i add all the total number of products and show them in a text box?? last questtion sir...