>>>>isblank(ctod(allt(.Text1.Value)))
>>>>
>>>>this will return .T. if the date invalid ( according to VFP ).
>>>>
>>>>- jer
>>>
>>>But if the date is valid, this gives an error.
>>
>>what version are you running...I just tried to make this through and error and is wouldn't.
>>
>>isblank(ctod(allt("2001/12/02"))) = .T.
>>isblank(ctod(allt("02/12/2001"))) = .F.
>>isblank(ctod(allt("blablablaa"))) = .T.
>>isblank(ctod(allt("06-12-2001"))) = .F.
>>isblank(ctod(allt("06-45-2001"))) = .T.
>
>The problem lies in the fact that if the date is valid, the value of the textbox will be a date type. So it's like doing isblank(ctod(allt({06/05/2001}))), which gives an error.



why would .value = {06/05/2001} ? I'm not familiar with a condition that would do that, althought I don't use this when the textbix is bound - that may be why in your case. if so might what to add
if vartype( form.textbox.value ) <> "D"
isblank(...