"Marcus Vinícius" <marc.marcus@bol.com.br> wrote in message
news:exg1bOixDHA.2316@TK2MSFTNGP10.phx.gbl...
> Hi,
>
> I have a simple question about nuemric functions..
>
> in vb6 I used isnumeric function to validate a textbox value for
example...
>
> My question
>
> How Can I validate a value if it is numeric or not in vb.net?
>
>
> PS: I want to know how I can do it without Visual Basic "IsNumeric"
> function....
>
> Thanks
>
> --
>
>
> -------------------------------------------------
> Marcus Vinícius M. Montezano
>
> Programador
>
> Digiexpress
> -------------------------------------------------
>
>

>
> "Marcus Vinícius" <marc.marcus@bol.com.br> wrote in message
> news:exg1bOixDHA.2316@TK2MSFTNGP10.phx.gbl...
> > Hi,
> >
> > I have a simple question about nuemric functions..
> >
> > in vb6 I used isnumeric function to validate a textbox value for
> example...
> >
> > My question
> >
> > How Can I validate a value if it is numeric or not in vb.net?
> >
> >
> > PS: I want to know how I can do it without Visual Basic "IsNumeric"
> > function....
> >
> > Thanks
> >
> > --
> >
> >
> > -------------------------------------------------
> > Marcus Vinícius M. Montezano
> >
> > Programador
> >
> > Digiexpress
> > -------------------------------------------------
> >
> >
> Check out the Convert class in the help. Capture the textbox.text property
> in a string, then use Convert.(name of method that suits your needs) to
> attempt a conversion inside a try - catch block (look at
> try...catch---finally statements in the help). The exception you want to
> catch is InvalidCastException.
>
> --
> Peter - [MVP - .NET Academic]
>
>