webBrowser_ProgressChanged event not firing?

[J. Scott Elblein]

Hi all

I am learning my way around the web browser control, and I both love it and I hate it. LOL

I am desperately trying to get a *reliable way* of detecting when a web page is truly, fully and completely done downloading (iFrames, and the whole nine yards).

It's been a nightmare so far. I can't believe MS would not be able to recognize this when they released the control. But anyway.

I am trying to do some things in the aforementioned event, but it simply is not firing any time I go to a web page. Am I missing something?

Also, does anyone have a sound way of detecting when a page is fully loaded? I would soooooooooooooooooooooooooooooooooooo appreciate it!

TIA

 

[JohnH]

this is the standard progress handler:

Private Sub WebBrowser1_ProgressChanged(ByVal sender As Object, _
ByVal e As System.Windows.Forms.WebBrowserProgressChangedEventArgs) _
Handles WebBrowser1.ProgressChanged
    ProgressBar1.Maximum = e.MaximumProgress
    ProgressBar1.Value = e.CurrentProgress
End Sub

this is the values I detected with a frameset page (m=max,v=value):

m10000v100m10000v100m10000v100m10000v100m10000v100m10000v10000m10000v10000m0v0

maybe you can use the max=0 for something?

for the same frames test I detected the ReadyState for each DocumentCompleted event call and got this:

Interactive
Interactive
Interactive
Complete

this is the combined order of the progress and completed events:

m10000v100m10000v100m10000v100m10000v100m10000v100m10000v10000Interactive
Interactive
Interactive
m10000v10000Complete
m0v0

Here is another sample for a site that has a particular long loading sequence, it isn't even using frames!?:

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
m1000000v734400m1000000v702400Interactive
m1000000v990400m1000000v174800m1000000v814400Interactive
Interactive
Interactive
m1000000v718600m1000000v284200Interactive
m1000000v990800Interactive
Interactive
m1000000v933200Interactive
Interactive
Interactive
Interactive
Interactive
Interactive
Interactive
Interactive
Interactive
m0v0Interactive
Interactive
Interactive
Interactive
m0v0Complete

(oh, it was using lots of Iframes)

 

[J. Scott Elblein]

Hi John.

Very useful info there. I am playing with the readystate in the doccompleted event now thanks to that. One thing I still don't understand though, what could prevent the Progresschanged event from firing? Doesn't it trigger every single time a new page is navigated to? I place a breakpoint at the very first instruction in the event and it just never breaks?

 

[JohnH]

I have no idea, post a sample project that reproduces the problem.