I wrote a application for windows phone 7 which search my database online and opens a link in Internet explorer by WebBrowserTask. When the internet explorer opens my application minimizes which is usual thing to happen.
And when i get back to my application which is running in the background it shows a message "Resuming" and my application is started from the beginning. The changes made is gone.(The search results)
How to preserve these changes when the application is running in the background, when Multitasking.
I believe I answered this question over at this question:
I have a windows phone 7 application how do I make sure it supports fast task switching?.
Check that out and let me know if it meets your needs.
Related
Good day.
Background: ASP.NET MVC 3 / SignalR.
I'm developing typical chat component which will be used in a big portal. I wrote small emulator which opens new window with chat component and new SignalR connection in it.
The problem:
Everything works fine, but: Suddenly i noticed that if i open more than X windows/tabs with same component in one browser - server stops to receive any responses from any clients connected with it.
The X is:
5 for IE and Chrome
14 for FF.
I suppose it's a browser issue, because the value differs from one to another. Additionally i noticed that requests can stay pending for minutes! And there is no timeout..
Maybe someone faced with something like this, or know what can cause this strange behavior?
Thanx in advance, Jan.
I'm going to assume you're using IIS 7/7.5 on windows 7. If you are indeed using Windows7 then you need to use IIS Express since it only supports 10 concurrent connections (Client OS limit). Alternatively you can use Windows Server to get the full benefits of IIS.
This is the first post in three days of googling that came close to my experience. I am using the .NET client and have tried isolating the issue by creating an app with just the problem areas. The difference in our situation is this: I don't seem to have some connection limit on the client. In fact, I have no issues until I deploy my .Net hub to the windows server 2008 hyper vps. IIS express runs everything as smooth as butter. I've checked to make sure the asynchronous services and features are running and I've followed the performance tuning articles that david mentions in the documentation, adjusting the setting for thread queue maximums and the like. Note that the minute-two minute delays you describe are identical to mine. I updated to the latest version of SignalR (.4) from nuget and it broke my solution for some reason.
Can you tell me what version you're on? I suspect it could have something to do with security on the physical host where my vps is running. I am going to try it on a different virtualization platform to rule out hyper v issues.
Please, see my answer here: Is there a way to get number of connections in Signalr hub group?
The idea is to overwrite connectionid.
I'm developing an asp.net web site to work on mobile devices. Is going ok and works fine with android and iphone. I've no got around to testing it with blackberry in my balcberry curve. When i first tried everything looked good b ut then i noticed that some od the autopost back on dropdowns etc did not work. Some research time later i turn out out that by default that blackberries do not support this and that I need a Blackberr.browser file to allow that type of functionality to work. I following this link...
http://www.codeproject.com/KB/aspnet/BlackberryASPNET.aspx
After doing this my blakberry will not load the site at all, i just get connection timeouts. So i tried removing the blackberry.browser file, read loading the assembley in an attempt to get back to where is was, but still the site will not connect. I've refreshed iis, recycled app pools and even rebooted. I have a QA site on another box that the blackberry will connect to, but my development machine it does not like anymore:-(.
Any one got any ideas in what is going on?
Thanks for any help.
Richard
I have also suffered with the pain of developing (actually optimizing) websites for BlackBerry and Symbian, and I understand your suffering.
As you're using BlackBerry Curve, I suppose you're using a MDS server simulator on your development machine to let the BlackBerry Emulator connect to Internet.
Although I am not sure if you're even using a simulator.
I also have come across some simulators which just won't connect to the Internet no matter how hard you try with MDS server and all.
I hope you're not stuck with any issue related to the above said things mate.
Are you trying to connect your localhost with your BB?
Users of my Flex application report that sometimes the application is freezed when the browser window is minimized or they select another active tab over it. In this suspended state, the application receives no CPU share and all network connections it uses are closed. When the browser window is restored, the application is resumed. This happened with Safari 5 on Mac OS Leopard, with both Flash player 10.0 and 10.1. I searched a lot but I could not find any information about such behavior.
This behavior is not reproducible on each Mac with Safari, so my questions are:
Under which circumstances this may happen?
Is it possible entering in suspended state to be prevented and how?
Is it possible for the Flex application to be notified about going into sleep mode and wake up back?
This is a Safari thing and is by design. Newer versions of Safari suspend flash content that is not in the foreground tab (not sure when this started, version 4?) For instance, if you have multiple tabs open, each with a youtube video playing and you go back and forth between the tabs, only one of the videos will be playing at a time. To answer your specific questions:
This will happen to any flash content that is in a background tab (not sure about the minimized state.)
Not aware of a means of disabling this behavior.
You may want to dig around in the Safari documentation to see if there is some sort of JavaScript event that you can grab onto, but I don't think you are likely to have success there.
Good luck.
Are your users using Flash Player 10.1 ? As part of the performance improvements in 10.1; I believe an application in a minimized state will get throttled in order to use less system resources / battery power.
I don't think there is any way to prevent this; and no APIs exposed that relate to this.
Other people I've spoken to have had issues with using local connections between minimized apps and active apps. I'd bet there is already a bug in the bug base on that.
Wrt the following above:
.I don't think there is any way to prevent this; and no APIs exposed that relate to this.
You may want to check out if Silverline from Librato can help you control how much and which applications get what system resources (CPU, memory, Disk and Network IO) with dynamic control based on application demand. If the above issue is a feature of flash - then obviously it may not help. But if you are trying to say run multiple applications / processes and would like to control who gets how much system resources (dynamically) then you could try Silverline - it does not require any changes to OS or app. http://silverline.librato.com
This problem is beginning to annoy.
After my machine (Vista Ultimate) has been up for a while, running my ASP.NET web site project for debugging in VS2008 results in Internet Explorer "hanging". It doesn't seem to get past the network access stage, you know when it says "Loading web site", or "Waiting for".
I've attached a screenshot of IE. Note the status bar. It stays like that forever. I have to restart it and cross my fingers for it to work the next time. Invariably, it doesn't.
This happened with IE7 and IE8.
I am using the ASP.NET Web Development Server/Cassini. I have tried restarting this each time which seemed ot have got it, but then not so any more.
I'm up to date on patches.
ie screenshot http://img40.imageshack.us/img40/5446/iehanging.png
So thankfully Microsoft have finally released Security Essentials.
This meant I could de-install AVG (Free and paid-for versions) from my machine.
Hey presto, it works!
I would check the following
1) that your not starting IE against the webserver againt the wrong port, if your using the development IIS then it changes ports at times. That combined with you setting up the browser to launch against a the old port could create this problem.
2) Stop the local IIS and restart it (Again make sure your pointing towards the correct port)
3) Make sure you dont have any hung IE in task manager ( this happens to me sometimes ). Basiclly you have a IE in task manager that uses less then 1mb of ram and does not show on the taskbar, if thats the case kill them.
This doesn't sound, strictly speaking, like a hang. Can that tab/other tabs be navigated to other sites? Is your machine configured to use a proxy?
Is the request actually sent? Using Fiddler2 from www.fiddler2.com with the URL http://ipv4.fiddler:56125/ will show you, and help determine where in IE the problem might be.
I just had a similar problem that took about a week to unravel. Using AVG 9 Business Edition.
I'm on a Windows 7 machine with Visual Studio 2010 SP1, debugging ASP.NET sites running in IIS, with the same "hang" behavior you're seeing. Disabling LinkScanner and Online Shield in AVG fixed the problem.
I have an ASP.NET web application where a portion of it needs to run in a web browser as a public facing terminal.
Essentially it is used to capture anonymous user feedback (wizard control on a .aspx) in a commercial location such as a shop.
An administrator will login and prep the application for 'terminal' mode.
The terminal is a normal PC with keyboard and/or mouse like device.
I would like to prevent users from:
Viewing the browser menu's, pushing back button and/or entering a different URI in the URL and also disallow keyboard shortcuts from bypassing the intended looping functionality of the application that is running?
Which browser is best suited for its ability to disable functionality as mentioned? The app runs on IE/FF/Chrome/Opera/Safari.
HOW would one go about configuring the machine and/or browser so it is locked to prevent unauthorized/unintended use?
On a side note, I guess the web application session needs to have an unlimited timeout?
Thanks for your input!
EDITED: I am leaving the question as unanswered for now... I would like to see responses that highlight possible options for the other browsers as well.
You can run Internet Explorer in Kiosk mode.
Please see this MS KB article.
Simply put, start Internet Explorer with the -k argument
There seems to be some commercial products available also, like this.
Try How to use Kiosk Mode in Microsoft Internet Explorer
Also, there are many Kiosk tools to assist in locking down a machine. Example: http://www.thekioskstore.com/index.php/software/kiosk-lock-down
Firefox has at least two plugins (and possibly many more):
https://addons.mozilla.org/en-US/firefox/addon/1659
https://addons.mozilla.org/en-US/firefox/addon/509
It is also possible to lock down KDE and GNOME (GNOME at least has a built in tool), which you can also use to lock down the rest of the system. I suggest installing Ubuntu if the web app is running on another system.
If you have to use MS Windows, check out: http://www.microsoft.com/windows/products/winfamily/sharedaccess/seeit/internetcafe.mspx.
You can use an opensource Linux distribution designed for this very purpose, http://webconverger.com/