Non Editable EDIT button and all record in Grid of SalesTable form (Sales Orde Approval Workflow)

Hi Friends,

I have a problem in my sales order approval workflow. The Edit button and fields in the grid of salestable form is editable should be non editable. I tried to modify using active method in salestable and salesline datasource and override the clicked method in EDIT buttom, but still nothings happen.Please help me :(

Thanks..

Chris.