Help to Italy

[Luca]

Hello from Naples Italy, I need help to develop an application that
fill fields automatically in a WEB page and then submit the request. I
really need it for getting automatically rates from low cost airline
but I am testing it with Google. I am writing the following code in
VB.net

AxWebBrowser1.N avigate("http://www.google.com" )

doc = Me.AxWebBrowser 1.Document 'Get htmldocument

Dim ricerca As mshtml.HTMLInpu tTextElement =
doc.getElements ByName("q").ite m(, 0) 'get inputbox ref
ricerca.value = "Italy" 'Input value
Dim submitButton As mshtml.HTMLInpu tButtonElement =
doc.getElements ByName("btng"). item(, 0)
submitButton.cl ick() 'click the button

I get this error on the last line: An unhandled exception of type
'System.NullRef erenceException ' occurred in WindowsApplicat ion1.exe
Additional information: Object reference not set to an instance of an
object

Is there anyone who can help me?
Thanks in advance.
Luca

[Terry Burns]

Re: Help to Italy

This error message means that the object reference is set to Nothing.

So for example if I do this.

Dim myClassInstance As MyClassType

then

myClassInstance .MyMethod

I will get the same error because I did not instantiate a new object of Type
MyClassType or set myClassInstance to reference for an existing object of
that type.

Looking at your code

doc.getElements ByName("btng"). item(, 0)

You have probably made a mistake with the line here perhaps the name "btng"
is incorrect and it does not return an object.

HTH

--
Terry Burns

http://TrainingOn.net

"Luca" <visit@tin.it > wrote in message
news:1139763295 .711051.263190@ g44g2000cwa.goo glegroups.com.. .[color=blue]
> Hello from Naples Italy, I need help to develop an application that
> fill fields automatically in a WEB page and then submit the request. I
> really need it for getting automatically rates from low cost airline
> but I am testing it with Google. I am writing the following code in
> VB.net
>
> AxWebBrowser1.N avigate("http://www.google.com" )
>
> doc = Me.AxWebBrowser 1.Document 'Get htmldocument
>
> Dim ricerca As mshtml.HTMLInpu tTextElement =
> doc.getElements ByName("q").ite m(, 0) 'get inputbox ref
> ricerca.value = "Italy" 'Input value
> Dim submitButton As mshtml.HTMLInpu tButtonElement =
> doc.getElements ByName("btng"). item(, 0)
> submitButton.cl ick() 'click the button
>
> I get this error on the last line: An unhandled exception of type
> 'System.NullRef erenceException ' occurred in WindowsApplicat ion1.exe
> Additional information: Object reference not set to an instance of an
> object
>
> Is there anyone who can help me?
> Thanks in advance.
> Luca
>[/color]

[Luca]

Re: Help to Italy

Thanks Terry but btng is how google calls the button, you can see it in
html page of google so my question is: why my instruction does not
return anything?
Can you help with this

[Terry Burns]

Re: Help to Italy

Its a bit difficult without actually working on it. Suffice to say that this
is not returning the object and thats where you need to concentrate.

--
Terry Burns

http://TrainingOn.net

"Luca" <visit@tin.it > wrote in message
news:1139782264 .155595.174790@ f14g2000cwb.goo glegroups.com.. .[color=blue]
> Thanks Terry but btng is how google calls the button, you can see it in
> html page of google so my question is: why my instruction does not
> return anything?
> Can you help with this
>[/color]

[Luca]

Re: Help to Italy

Thanks Terry, I really apologize to bother you, I usually work with VB
and I am not very familiar with .net,I am getting crazy with this.
I am looking for a way to fill fields in a WEB page and update in an
Access table the result.
Please give me a line to follow and I will offer you a good pizza when
you come to Naples.