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WebView.AfterRecieveHeaders Event does not have same behavior Options
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Jessica_Suarez
Posted: Tuesday, August 13, 2019 9:53:53 AM
Rank: Newbie
Groups: Member

Joined: 8/13/2019
Posts: 3
Hello guys,

We recently changed the dlls EO.Base, EO.WebBrowser, EO.WebBrowser.wpf, EO.WebEngine from v18.2.53 to v19.1.40.
The WebView.AfterReceiveHeaders has not the same behavior in my project comparing both versions.

There are something different on this event? or another one that complement it in new versions?


What I am trying to execute is the following code:

While page is loading, the events are working fine...

But in the last when my url changes and the flag for ProcessingComplete changes to true, last call for to check the WebView_AfterReceiveHeaders() is never invoked to validate the my ProcessingComplete flag and trigger the ExecuteCallBack();



Quote:
private void WebView_BeforeNavigate(object sender, BeforeNavigateEventArgs e)
{
if (e.NewUrl.EndsWith(@"OperationSuccess/", StringComparison.OrdinalIgnoreCase))
{
ProcessingComplete = true;
}

}



Quote:
private void WebView_AfterReceiveHeaders(object sender, ResponseEventArgs e)
{
if (this.ProcessingComplete)
{
this.DialogResult = DialogResult.OK;
ExecuteCallBack();
}
}



It works on v18.2.53 but not in v19.1.40.


Thanks in advance for your help.

Jessica
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eo_support
Posted: Wednesday, August 21, 2019 3:57:45 PM
Rank: Administration
Groups: Administration

Joined: 5/27/2007
Posts: 24,218
Hi,

You can not use BeforeNavigate and AfterReceiveHeader this way. These are two problems:

1. They are NOT one to one. BeforeNavigate is only triggered for the main resource, where as AfterReceiveHeader is triggered for every resources. So if you have a page index.html that contains an img element, the BeforeNavigate will be triggered for index.html, but AfterReceiveHeader will be triggered for both index.html and the image Url. To avoid this problem, you can check e.Request.ResourceType in your AfterReceiveHeader handler;

2. They are called in different threads. So you must add synchronization code between these two handlers;

Hope this helps.

Thanks!
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