Primary key needs to displayed in the datagridview

Hi,

I'm using windows form application and Ms access. I have a tab with datagridview which displays all the orders of the customer(gets data from table in access) and a button to add new order. On click of the button, opens a new tab with textboxes to add new orders. The data saves fine. But when I switch to the tab that displays all the orders in datagridview, all the information except Order ID is not displayed. The order ID is the primary key and autogenerated in Access table. But if I navigate through the records, the order ID is displayed. How Can I get the order ID displayed in the datagridview? Please help