On Lost Focus....check To See If Primary Key Exists

Jul 20, 2005

Hi there

I recently have been given a database to get into shape.

One of the main problems is that when a person enters data into a form, They until the leave the form are not aware if the primary key has been used before.


Let me try explain.

I have a booking number (which I have only in the last couple of days made a primary key and also changed it so there can be no duplicates)

I have changed the form around alittle so that the person entering the new data must start with entering the booking number.

How can I make a piece of code that once the booking number textbox loses its focus the code then checks the table to see if that booking number exists. I would like for the person to establish that they need to enter a new booking number before getting to the end before seeing that the booking number already exists.

I hope I am making some sense.


TIA

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Hi there.

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