Main form to unlock subform when required feilds are entered

[gleave]

Hi, I have a problem with subforms. I want to lock a subform until all the required data is inputted in the main form.

The required fields in main form:
Invoice Number
Invoice to

The main form is called:
Invoicing

And the subform is called:
Products subform

Thank you

[CaptainD]

You did not mention what language or program but I would look at disabling the controls in the sub form until all the desired fields have been done or possibly when the sub form becomes active it runs a check on the fields in the main form.

Hi, I have a problem with subforms. I want to lock a subform until all the required data is inputted in the main form.

The required fields in main form:
Invoice Number
Invoice to

The main form is called:
Invoicing

And the subform is called:
Products subform

Thank you