Access 2007: Index or primary key cannot contain a Null value
I have a Access database with a table that has a primary key. I have a form that dispalys this field, but I have the field read-only. I was hoping to have Access assign a unique number to this field, so the user does not have to enter it in. However, this field is blank and when I save the record Access says, "Index or primary key cannot contain a Null value".
Can you have a column as a primary key with an auto identity (like SQL Server)? Do I have to write some VBA to populate this field with a unique number for the primary key? What have others done?