The VB.Net desktop app uses the IE browser control to navigate the web. When a normal page loads the document_complete event fires and I can read the resulting page and go from there. The issue I am having is that the page I am driving is written with AJAX, so the document complete event never fires. Furthermore, when you view the source of the page after it loaded a new portion via AJAX, it hasn't change. How are people handling this? What are my options?
views:
854answers:
7
A:
You need to interact with the Javascript code in the website using the methods on HtmlDocument.
SLaks
2010-03-18 19:17:32
Am I monitoring another event in VB.Net? Can you provide an example?
ajl
2010-03-18 19:50:44
A:
I have seen this kind of behavior with C# when some AJAX scripts created a race condition. Adding the defer attribute to the script tag helped in that case. YMMV.
Robusto
2010-03-18 19:26:55
A:
Not sure if this will work.
When the Ajax call completes, add a random anchor hash to the URL like so: foo.html#23234 then add your code to the NavigateComplete2 event.
http://msdn.microsoft.com/en-us/library/aa768334%28VS.85%29.aspx
Raj Kaimal
2010-03-26 05:39:44
Not sure what framework you are using but with the core api, you know the load is complete in the onreadystatechange event function onSumResponse() { if (xhReq.readyState != 4) { return; } var serverResponse = xhReq.responseText; ... } ... var xhReq = createXMLHttpRequest(); xhReq.open("GET", "sumGet.phtml?figure1=5 xhReq.onreadystatechange = onSumResponse; xhReq.send(null);ref: http://ajaxpatterns.org/XMLHttpRequest_Call
Raj Kaimal
2010-03-26 16:06:40
A:
I'm guessing that the page your load in your windows app does an AJAX call, which appears to refresh the page. In that case, the document_complete event isn't fired, because the webpage itself isn't refreshed, but a portion of the page.
I found a similar question about this problem, with an accepted answer in VB.Net.
Prutswonder
2010-03-27 22:56:15
A:
AJL - I'm having the same exact same problem. Do you have a working example to resolve this issue? Any help would be greatly appreciated.
markakahunter
2010-04-06 03:40:30
+1
A:
This solution might solve your problem. prerequists: AxwebBrowser control, reference to mshtml.dll
Dim axmshtml As mshtml.HTMLDocument = YourAxWebBrowserControl.Document
Dim HTMLSource As String = axmshtml.body.innerHTML 'html source, including DOM changes
If you know what you are looking for you can put the above code in a timer/loop
and simply monitor the page source for changes.
Bobby
2010-04-06 14:41:44
A:
You can use the ProgressChanged event, it seems to fire during ajax calls
jethomas44
2010-05-05 17:55:03