Stress test webview display on frame switch

Question

Hi,

I've a C# metro project in where I display a webview with an HTML content and some pages. When I switch page I check by reflection in my current display if I've a webview. After retreive it I set its source to my HTML file and my content is displayed. All this is async and enque in a worker.

But after switch 100 time between pages my content is replaced by my desktop background. 

With the debugger I ve check webview attribut and all is clean.

Did some one have allready see an issue like this? How can I ensure my webview will be correctly displayed all the time?

Answer 1

What kind of stress do you expect your application to run into?  Maybe there's a bug, maybe there's a problem with your graphics card - I don't know.  Do you think this is a real-world scenario?

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Matt Small - Microsoft Escalation Engineer - Forum Moderator
If my reply answers your question, please mark this post as answered.

NOTE: If I ask for code, please provide something that I can drop directly into a project and run (including XAML), or an actual application project. I'm trying to help a lot of people, so I don't have time to figure out weird snippets with undefined objects and unknown namespaces.

Answer 2

Hi Matt,

Yes for me it's a scenario to check because if a user use this app to show pictures he can navigate more than 100 times.

Since this morning I have caught two time a ressource exception when I try to display my webview. But it seems that in C# metro app we can't manage directly ressources. So I can't release ressources use by my webview. I ve see making tests that it wasn't directly the webview which crash but the frame which can't load the webview.

Morethan I ve try to change navigation method of Page class making it sync, async, in an other thread pool... But nothing fix this issue.

Answer 3

Can you reproduce the problem on other machines?

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Matt Small - Microsoft Escalation Engineer - Forum Moderator
If my reply answers your question, please mark this post as answered.

NOTE: If I ask for code, please provide something that I can drop directly into a project and run (including XAML), or an actual application project. I'm trying to help a lot of people, so I don't have time to figure out weird snippets with undefined objects and unknown namespaces.

Answer 4

Yes on 4 devices: 2 computer with windows 8.0, 1 with windows 8.1 and on a winrt surface

If you want my package to test by yourself please give me a place to post my package and the version you want (arm, x86, x64)

Answer 5

Please post to OneDrive, x86.

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Matt Small - Microsoft Escalation Engineer - Forum Moderator
If my reply answers your question, please mark this post as answered.

NOTE: If I ask for code, please provide something that I can drop directly into a project and run (including XAML), or an actual application project. I'm trying to help a lot of people, so I don't have time to figure out weird snippets with undefined objects and unknown namespaces.

Answer 6

https://onedrive.live.com/redir?resid=9D3284E6D45DC971!149&authkey=!AJiLsndTg5zKQbc&ithint=file%2c.rar

Answer 7

I got it, what do I do?

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Matt Small - Microsoft Escalation Engineer - Forum Moderator
If my reply answers your question, please mark this post as answered.

NOTE: If I ask for code, please provide something that I can drop directly into a project and run (including XAML), or an actual application project. I'm trying to help a lot of people, so I don't have time to figure out weird snippets with undefined objects and unknown namespaces.

Answer 8

Hi,

Sorry I ve forgot to give you the notification file.

Here you can take it : https://onedrive.live.com/redir?resid=9D3284E6D45DC971!150&authkey=!AOi5r1hqPMPSxdE&ithint=file%2c.txt

Download it and in your application package on folder "LocalState" past it.

After that you could see the webview in the app.

To produce the error just change page until notification display fail.

Answer 9

Hi,

So I ve investigate more and I found my mistake...

Every time I create a page I set an handler and I never detach it.

Sorry for all of this I ve failed.