Hi, I have combo box that contains name of all customer, I want when i enter name of new customer that not listed in, newCustomer form will open,
then How can i check for existing record in Access VBA?
It depends on the version of Access. 2003 or rearlier use the "On Not In List" event of the combobox to create a little bit of VBA to open the newcustomer form - Just type NotINList in VBA editor help and it will direct you.
However if you have Access2007 or 2010 then you can set a fom name in the comboboxes Properties>>Data>>ListItemsEditForm .