Webbrowser script error: Invalid argument

[TeachMeVB]

Hey
I'm making a program that i call "CheatyCheater".
It is a webbrowser designed to make it easier to cheat on tests. (electronic tests).
When i press a button, the first webbrowser is hidden, and a new one appears.

The second browser is ment to be a groupchat for the class. So we can exchange awnsers.
However when i press the button, and the second browser navigates to the chat-website the following error appears: (Error is translated from norwegian an may not be 100% accurate)

Script error
An error has occurred in the script on this page.
Line: 36
Sign: 3
Error: Invalid Argument
Kode: 0
URL: https://chatstep.com/file.js

How can i get rid of this error? I need to get this working!
The site seemed perfect for the purpose i want!

[TeachMeVB]

Ehm...
fixed it :P
Was annoyingly simple.
Problem now:
on the site (https://chatstep.com/) the "join" button has no name o.O
how can i press this? I'm stuck... Thanks in advance

(I will create another topic dedicated to this problem aswell, so it will be easier for people googling the same problem to find)

[dunfiddlin]

the "join" button has no name

It has an ID!

[TeachMeVB]

It has an ID!

-.-' dont you think i know that?
i tried the line:
WebBrowser1.Document.GetElementByID("joinButton").invokeMember("click")
But it did not work... so... any other bright ideas?

(Even if it says ".GetElementByID" it looks for the name, atleast i was told so. Seems to be accurate)

[dunfiddlin]

Well, you obviously get told a lot of nonsense then. If it doesn't find the element it throws an exception so the problem is obviously not that you can't find the button but that it doesn't operate on "click". This is not uncommon with scripted buttons. I have had some success using "onclick" instead and if that doesn't work I've also tried what is effectively a double click, varying the period between the two clicks. And then again there are some buttons that just won't be clicked other than by an actual mouse.

[TeachMeVB]

Well, you obviously get told a lot of nonsense then. If it doesn't find the element it throws an exception so the problem is obviously not that you can't find the button but that it doesn't operate on "click". This is not uncommon with scripted buttons. I have had some success using "onclick" instead and if that doesn't work I've also tried what is effectively a double click, varying the period between the two clicks. And then again there are some buttons that just won't be clicked other than by an actual mouse.

Found the problem :P
I solved the scripterror by suppressing the error. So now i tried manually clicking the "join" button with the webbrowser in .visible = true mode, and nothing happend...

So theres the problem. Script error. The button wont be pressed. Why? pls help with this problem

[dunfiddlin]

Nothing to be done, I'm afraid. The site is just very badly scripted and fails on IE proper so there's no chance of the renderer getting this right. You could try one of the other browsers available for VS or use another site but you'd be doing a lot of people a favour if you complained to the site's coders that it breaks Internet Explorer rendering and demanded that they do something about it!

[TeachMeVB]

what do you mean "try another browser available for VS"? How do i do that?

[Niya]

He means use some other 3rd party WebBrowser control like maybe one based on Gekko(FireFox) or WebKit(Google Chrome) because Trident(IE) cannot run this script.....However, I don't think its worth the trouble of finding because the script would probably fail there too.

[TeachMeVB]

He means use some other 3rd party WebBrowser control like maybe one based on Gekko(FireFox) or WebKit(Google Chrome) because Trident(IE) cannot run this script.....However, I don't think its worth the trouble of finding because the script would probably fail there too.

You don't think its worth the trouble beacuse other will fail 2?
Well... when i found the page i used chrome (google), and 5 min ago, i tried viewing the page in internet explorer 9, and it failed.
So if chrome runs it, but not IE, why shouldn't it work to use the 3rd party browser of "WebKit"? I wanna try atleast. The page seemed PERFECT for its purpose.
Please help me. (and thanks for all the usefull replies so far)

[Niya]

Oh it works in Chrome....well now you'd have to hope to God someone made something in .Net like the WebBrowser control that uses WebKit. Maybe someone has something over at SourceForge. That's the best I can say on this topic. Sorry, I couldn't help you more.

[TeachMeVB]

Oh it works in Chrome....well now you'd have to hope to God someone made something in .Net like the WebBrowser control that uses WebKit. Maybe someone has something over at SourceForge. That's the best I can say on this topic. Sorry, I couldn't help you more.

Thanks for the help to both of you.
And i'll pray, you can be sure of that
I'll do some googling, and maybe create some topics in some forums... I'll see what i can find.
Feel free to help me look :P

[TeachMeVB]

Oh it works in Chrome....well now you'd [...] say on this topic. Sorry, I couldn't help you more.

Ehm... found this: http://tutorialsvb.blogspot.no/2010/...itbrowser.html
It seems very ok. However, im not that good at coding.... So could someone please remove the parts of the code that requiers me to have any buttons/textboxes...?
I want a simple browser that lets me do what i command it to via code. No buttons.

(+ As i said in the original post. I got two Web browsers, if i make one work via webkit, will the other one have to be adapted to webkit aswell!? Im so confused...)

Anyway... If your to lazy to read the text at the URL i provided, here are the details needed:

The site tells me to add these buttons/textboxes...

name: buttonback text: Back
name: buttonforward text: Forward
name: buttonsr text: Stop
name: buttongo text: Go anchor: top right
name: buttonSearch text: Search anchor: top right
name: urltxt anchor: left top right autocompletemode: SuggestAppend autocompletesource: allurl
name: searchtxt anchor: top right autocompletemode: SuggestAppend autocompletesource: historylist

And here is the code im told to add:

Private Sub Buttonback_Click(ByVal sender As System.Object, ByVal e
 As System.EventArgs) Handles Buttonback.Click
       WebBrowser.GoBack()
    End Sub
    Private Sub buttongo_Click(ByVal sender As System.Object, ByVal
 e As System.EventArgs) Handles buttongo.Click
        WebBrowser.Navigate(urltxt.Text)
    End Sub
    Private Sub Buttonsr_Click(ByVal sender As System.Object, ByVal
 e As System.EventArgs) Handles Buttonsr.Click
        If Buttonsr.Text = "Stop" Then
            WebBrowser.Stop()
        ElseIf Buttonsr.Text = "Refresh" Then 
            WebBrowser.Navigate(WebBrowser.Url.ToString) ' Then
 refresh the browser
        End If
    End Sub
    Private Sub Buttonforward_Click(ByVal sender As System.Object,
 ByVal e As System.EventArgs) Handles Buttonforward.Click
        WebBrowser.GoForward() 
    End Sub
    Private Sub buttonsearch_Click(ByVal sender As System.Object,
 ByVal e As System.EventArgs) Handles buttonsearch.Click
        WebBrowser.Navigate("http://www.google.com/search?hl=en&
source=hp&q=" & searchtxt.Text) ' Search Google
    End Sub

    Private Sub WebBrowser_DocumentCompleted(ByVal sender As
 Object, ByVal e As System.Windows.Forms.
WebBrowserDocumentCompletedEventArgs) Handles WebBrowser.
DocumentCompleted
        Try
            urltxt.Text = WebBrowser.Url.AbsoluteUri
        Catch ex As Exception
            WebBrowser.Navigate("http://google.com")
        End Try
        Me.Text = WebBrowser.DocumentTitle & " | Webkit Browser"
        Buttonsr.Text = "Refresh"
    End Sub

    Private Sub WebBrowser_DownloadBegin(ByVal sender As
 Object, ByVal e As WebKit.FileDownloadBeginEventArgs) 
Handles WebBrowser.DownloadBegin
        Process.Start
(e.Download.FilePath.ToString)
    End Sub

    Private Sub WebBrowser_Navigating(ByVal sender As Object,
 ByVal e As System.Windows.Forms.WebBrowserNavigatingEventArgs)
 Handles WebBrowser.Navigating
        Buttonsr.Text = "Stop"
    End Sub

    Private Sub WebBrowser_NewWindowRequest(ByVal sender As
 Object, ByVal e As WebKit.NewWindowRequestEventArgs) Handles
 WebBrowser.NewWindowRequest
        Dim frm As New Form1
        frm.Show()
        frm.WebBrowser.Navigate(e.Url.ToString)
    End Sub

    Private Sub searchtxt_KeyDown(ByVal sender As Object, ByVal
 e As System.Windows.Forms.KeyEventArgs) Handles searchtxt.KeyDown
        If e.KeyCode = Keys.Enter Then
            WebBrowser.Navigate("http://www.google.com/search?hl=en&
source=hp&q=" & searchtxt.Text)
        End If
    End Sub

    Private Sub urltxt_KeyDown(ByVal sender As Object, ByVal e As 
System.Windows.Forms.KeyEventArgs) Handles urltxt.KeyDown
        If e.KeyCode = Keys.Enter Then
            WebBrowser.Navigate(urltxt.Text)
        End If

    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e 
As System.EventArgs) Handles MyBase.Load
        WebBrowser.TabStop = True
        WebBrowser.TabIndex = 1
        Buttonback.TabStop = False
        Buttonforward.TabStop = False
        Buttonsr.TabStop = False
        buttongo.TabStop = False
        buttonsearch.TabStop = False
        Me.WindowState = FormWindowState.Maximized
    End Sub

Please help...

[Niya]

That's a very good find. It should be able to help others that have problems with the normal .Net one which has been reported numerous time here to have a memory leak bug. As for your question......I don't understand what you're asking.

[TeachMeVB]

That's a very good find. It should be able to help others that have problems with the normal .Net one which has been reported numerous time here to have a memory leak bug. As for your question......I don't understand what you're asking.

Ehm.. okay...
On my program, i got 2 webbrowsers. One for googling awnsers and such, and another one for the chat (The one running the chat needs to be webkit, not the other one).
So if i make the "chat-browser" use webkit, will the first browser turn webkit aswell? And will the webkit browser(s) use the same coding as normal .Net browsers?

[Niya]

Well I wouldn't know....I've never used it. They should have some form of documentation for it and from there you experiment. That's how you learn stuff like this.

[dunfiddlin]

Well before you get carried away, I've been unable to get the webkit browser control to work on VS2010 despite trying everything I know. It was written in VS2008, while Webkit itself is only compatible with 2005!!! Basically the whole project has been out of date for a long time.

[TeachMeVB]

Well before you get carried away, I've been unable to get the webkit browser control to work on VS2010 despite trying everything I know. It was written in VS2008, while Webkit itself is only compatible with 2005!!! Basically the whole project has been out of date for a long time.

Realy!? (( God damn it...
Well how about Gekko then? (firefox). Will that work?
(Will try WebKit tomorrow. Haven't got the time now.)
But anyway...
If any of you have firefox, pls try going to www.chatstep.com and create a chatroom. Tell me if it works or not. (If it doesn't theres no point in trying Gekko. Atleast for now).

*EDIT*
I wont have time today either... This has turned out to be a very busy weekend :/ But tomorrow (Sunday) I will definatly have time for it.

[TeachMeVB]

Well before you get carried away, I've been unable to get the webkit browser control to work on VS2010 despite trying everything I know. It was written in VS2008, while Webkit itself is only compatible with 2005!!! Basically the whole project has been out of date for a long time.

Well, now ive tested WebKit... and... well... i'm unsure if it works :-P I can browse the web and all, and i've tried navigating to www.chatstep.com but it happens the same as it did with the original browser.

How can i test that it's really running WebKit and not original VS webbrowser?