Hello guys,i'm newbie in vb.net i have a problem in updating all records in datagridview i can't get it to work..first i have two datagridview,the first one is coming from tbl_analysis and the second one is for my prooflist,when i click add,the records that came from tbl_analysis will be add to tbl_prooflist,then i have to click compute button in order to compute all the deduction to my prooflist..my compute code is working..now my problem is that how do i update all records in my datagrid with a single click.Please help me guys..i don't know what to do.im not using textbox by the way..