[Gambas-user] IsVal()

[Benoit Minisini]

On Tuesday 07 March 2006 16:09, R. Stormo wrote:
> Found a solution. The Command IsNumber()
>
> If NOT IsNumber(Textbox1.text) then return
> Now I can check for the number I want
> If val(TextBox1.Text)<2000 then return

Alas this is not a solution. Val() and IsNumber() in Gambas behave completely 
differently than in VB.

To do what you want, i.e. to know if a text is a number, do that:

DIM iVal AS Integer

TRY iVal = Val(MyText)
IF ERROR THEN
  PRINT "Not a Number"
ELSE
  PRINT "The number is "; iVal
ENDIF

I think it's the better way, because if you have a function that tests if a 
text is a number, he will do the conversion anyway just for the test, and 
then you will have to do it again for getting the number.

So the better is doing the conversion explicitely with a TRY.

Regards,

-- 
Benoit Minisini