Web form generated update code In VS

<i><b>Originally posted by : Ronnie Swafford (swaffordenterprises@charter.net)</b></i><br />I get the error below when I try to update records in my datagrid. I usually hard code this stuff, but I'm trying to get more familiar with Visual Studio.<br />Any ideas would be appreciated.<br /><br />Thanks,<br /><br />Ronnie<br /><br /><br />Exception Details: System.Data.SqlClient.SqlException: Prepared statement '(@item_number varchar(25),@cust_code varchar(10),@vendor varchar' expects parameter @item_number, which was not supplied.<br /><br />Source Error: <br /><br /><br />Line 134:<br />Line 135: SqlConnection1.Open()<br />Line 136: SqlUpdateCommand1.ExecuteNonQuery()<br />Line 137: SqlConnection1.Close()<br /><br /> <br />