Question

Webbrowser Control Not Working In VB.net

Asked by: StoneCutter3

I am trying to use the Webbrowser control in VB Studio 2008.  I added the "MS Interenet Controls" as a reference to the project.  I dragged the Webbrowser control from the toolbox onto my form.  I set the URL as "http://www.msn.com" and launched the project.  The webbrowser display the message "Navigation to webpage cancelled".  I've researched this process and it seems pretty straight forward.  What am I missing?  Thanks.

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Asked On
2009-07-27 at 07:45:31ID24603051
Tags

vb.net

Topic

VB Controls

Participating Experts
1
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125
Comments
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Answers

 

by: emoreauPosted on 2009-07-27 at 09:42:02ID: 24953375

instead of using MSINET, use the built in browser control. have a look at http://www.emoreau.com/Entries/Articles/2007/04/The-WebBrowser-control.aspx

 

by: StoneCutter3Posted on 2009-08-13 at 05:57:05ID: 25087632

Sorry I took so long to respond.  I did add the "MS Internet Control" reference to my project.  This loaded into the References folder of the project as ShDocVw.  I dragged a WebBrowser control onto my form and when I entered the tab page that I had the control on I executed the following two lines.

        WebBrowser1.Navigate("http://www.msn.com/defaulta.aspx")
        TextBox1.Text = WebBrowser1.Url.ToString

The TextBox1 control had the words "about:blank".

Any thoughts?

Thanks.

 

by: emoreauPosted on 2009-08-13 at 06:11:59ID: 25087768

You don't have to add the MS Inet Control. Have you tried my downloadable demo?

 

by: StoneCutter3Posted on 2009-08-13 at 06:22:16ID: 25087880

I did try the download.  It had the same result.

 

by: emoreauPosted on 2009-08-13 at 06:41:25ID: 25088068

Your problem is that the Navigate method is asynchrone. You have to wait that the page has loaded.

From my article:
When your target is found, an event is raised and returns the real URL. This event is the Navigated:

 

by: StoneCutter3Posted on 2009-08-13 at 07:10:51ID: 25088394

Why isn't your demo working?
I'm using VB Studio 2008.  It converted your demo to 2008 when I opened it.
Anything to do with that?

 

by: emoreauPosted on 2009-08-13 at 07:59:21ID: 25089068

I have this sample working.

-create a new project
-add a textbox
-add a button
-add a webbrowser control (straight from the toolbox - not MS Inet)
-add this code:

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        WebBrowser1.Navigate(TextBox1.Text)
    End Sub

    Private Sub WebBrowser1_Navigated(ByVal sender As Object, ByVal e As System.Windows.Forms.WebBrowserNavigatedEventArgs) Handles WebBrowser1.Navigated
        TextBox1.Text = WebBrowser1.Url.ToString
    End Sub

 

by: StoneCutter3Posted on 2009-08-14 at 02:43:08ID: 31608251

I found that two things.
1. When I ran in debug mode I could not access the Internet.
2. McAfee was blocking the Internet access but would not show the blocking when I ran in debug mode.
Thanks for quick responses, it helped direct me to the final answer.  Take care.
Joe Kaminski
 

20120131-EE-VQP-002

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