>>>>Hi.,
>>>>
>>>>I am a new entrant to these forums and Visual Foxpro. I just want to know whether anybody can
>>>>help me with the following how to:
>>>>
>>>> I am creating a form based on a table with row buffering. I want the form to check the entry
>>>>in the primary key field as soon as the operator leaves the field while in add routine.
>>>>
>>>> Also I would like to know whether I can change the control source of the fields for add routines
>>>>to the memory fields and for all other purpose the base table fields as the control source.
>>>>
>>>>Thanks in advance. By the way I found a message in my name without myself ever knowing it ?
>>>>Is such a thing possible as this is my first ever message to this forum.
>>>>
>>>>alex
>>>Hi alex,
>>>
>>>I too, am very new to vfp, but I can answer your question. As long as your table has the index set as primary and you have your form set to row buffering, vfp will do this automatically. I have set up several forms like this. It also helps if you use the buttons from the wizard class that autmatically move through any table attached to a form. They allow adds, edits and deletes and ms wrote all the code for you already.
>>>
>>>Audie
>>
>>Hi Audie,
>>
>>Thanks. But I am looking for a way to get a warning just as the user leaves the field. I am not for the vfp
>>way. My question is - Is there a way to get the duplicated warning immediately after leaving the field in a
>>form.??. I am not using the surrogate keys.
>>
>>Thanks
>>
>>alex

If understand your question correctly, you want to check that the primary key value that the user enters is unique before the tableupdate()? If so, I have handled this using something similar to the following (I use surrogate keys for primary indexes, but occasionally I have other fields that I want to be unique too):

In the valid event of the bound textbox:
oldrec = recno()
locate for keyfield = this.value
if found()
return .F.
endif
go oldrec

Or you could do the same thing using a second alias of the same table, and you would not have to move the record pointer in the first table.