TWideStringField in BDS 2006

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2 total messages Started by Oleg Tue, 25 Apr 2006 07:56

#456

Author: Oleg
Date: Tue, 25 Apr 2006 07:56

19 lines
1409 bytes

 
Hi,
I have a problem to check value of field in OnValidate event whether the 
field's type is TWidwStringField.
I am using MS access 2000 , C++ Builder 2006 under Windows XP. I get error:
Exception class EAccessViolation with message 'Access violation at address 
7714CA1E in module 'oleaut32.dll'. Read of address 00343000
 Previously I was using C++ Builder 5, it worked.
The code is as follows:

void __fastcall TForm2::ADOTable1textdate1Validate(TField *Sender)
{
     if(Sender->AsString.IsEmpty())
        // TODO
}

Any ideas???
Regards,
Oleg

Re: TWideStringField in BDS 2006

#457

Author: Tracer
Date: Tue, 25 Apr 2006 14:03

11 lines
1464 bytes

Hi!

Personaly, i never use ADOValidate. If you want to check if any field
is empty try to do if by field name variable. For example:

if(!AnsiString(ADOTable1MyDate->Value).Lenght)
    ShowMessage("Field is empty");

I hope this helps...

Zeljko

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