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• Digitally Signing a XAP Silverlight

  Ive been referring a lot of people lately to the steps to sign a XAP. So I decided to post an excerpt I wrote about signing Silverlight XAP files in the Silverlight 4 Whitepaper on Channel 9 here to help spread the word. The signing process is important if you are creating an elevated trust out of browser application because it helps: Reassure your users that the application is authentic Allow updates to elevated trust applications Elevated trust out-of-browser applications enable developers...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• JavaFX: Use a Screen with your Scene!

  - by user12610255

  Here's a handy tip for sizing your application. You can use the javafx.stage.Screen class to obtain the width and height of the user's screen, and then use those same dimensions when sizing your scene. The following code modifies default "Hello World" application that appears when you create a new JavaFX project in NetBeans. package screendemo; import javafx.application.Application; import javafx.event.ActionEvent; import javafx.event.EventHandler; import javafx.scene.Group; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.stage.Stage; import javafx.stage.Screen; import javafx.geometry.Rectangle2D; public class ScreenDemo extends Application { public static void main(String[] args) { Application.launch(args); } @Override public void start(Stage primaryStage) { primaryStage.setTitle("Hello World"); Group root = new Group(); Rectangle2D screenBounds = Screen.getPrimary().getVisualBounds(); Scene scene = new Scene(root, screenBounds.getWidth(), screenBounds.getHeight()); Button btn = new Button(); btn.setLayoutX(100); btn.setLayoutY(80); btn.setText("Hello World"); btn.setOnAction(new EventHandler() { public void handle(ActionEvent event) { System.out.println("Hello World"); } }); root.getChildren().add(btn); primaryStage.setScene(scene); primaryStage.show(); } } Running this program will set the Stage boundaries to visible bounds of the main screen. -- Scott Hommel

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• secure offline PC storage accessible through javascript

  - by turbo2oh

  I'm attempting to build a browser-based HTML5 application that has the ability to store data locally on a PC (not mobile device) when offline. This data is sensitive and must be secure. Of course the trick is trying to find a way to be able to access the secure data with Javascript. I've ruled out browser local storage since its not secure. Could this be accomplished with a local database? If so, where could the DB credentials be stored? Javascript obviously doesn't seem like a good option to store them since its user-readable.

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• Web Animations - the next generation

  Web Animations - the next generation The GDL event page for this event: developers.google.com Ask and vote for questions at www.google.com Browser developers are designing the next generation of animation features that will enhance HTML5 with rich, powerful new animation primitives. Designers and web app developers will all benefit from improved methods of animating content. Hear from developers of Google Chrome and Mozilla Firefox how this works, and learn how to try out the new animation features now in your favorite browser. From: GoogleDevelopers Views: 0 3 ratings Time: 30:00 More in Science & Technology

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• Recovering data from a corrupted disk

  - by r_honey

  I use an external harddisk to backup my data (it had 3 partitions). Last week when I plugged it in, the OS (Win 7) hung up and I had to force re-boot the machine. When I turned it back on, the system just did not detect the hard-disk. It was last Sunday and I had to give up after sometime. Now I return back next Sunday (today) and when I plug it back-in to the machine, the OS detects the disk as well as all the 3 partitions on it. But it says all 3 are unformatted and I cant access any of them. Is there any way to recover data from the 3 partitions (I tried PC File Recovery and Recuva from PiriForm but neither detected these partitions).

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• Installed Ubuntu 11.10, getting hard disk health warnings

  - by Brad

  I'm getting hard disk health problem warnings... When I click the "examine" button the disk utility pops up. None of my drives are reporting any major issues, and the very first drive doesn't even have a SMART button. I don't really care if one of the drives is crashing, I've got everything backed up, but I just want to know how to stop these god forsaken message boxes from popping up randomly. I have already gone into the Disk Utility and checked "do not notify me if this drive is failing" on all of them except the one that doesn't have the SMART button. I've googled about as much as I can for one day.

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• Angular JS - shop data disapears after using external payment script

  - by rZaaaa

  Im building a shopping cart in angular JS. till now all goes good but now i am at the checkout phase of y project. The problem is that im using external payment gateways such as ideal etc. when i checkout using for example Ideal the page redirects to the login page of the bank. All i have is a return url When i get to the return url al angular data is gone... I dont know how to do this properly. Also when i checkout and from the back page hit BACK again. the data is also gone and i have to do all the steps again, fill cart etc. So i gues i have to do something with sessions but what is the best way with angular JS how can i do this? The php backend is a slim framework. In the php version of my website i use the session generate id for the "lost" carts. is a user comes back, this session would be the same so i can retrieve his data (other session variables) ...

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• Inverted Cursor with ARM OpenJDK 7 in Chromium, and clicking issues?

  - by Espionage724

  So I have a strange issue. When using Chromium on the Nexus 7 port of Ubuntu, Java apps in the browser have the cursor flipped, literally (not just inverted movement, but the cursor itself flipped too). Also, clicking in java apps, both in the web browser and standalone, clicks don't register when using a USB mouse. I have to tap the screen itself to click. And another issue with the mouse; it seems Minecraft is unable to run, and freezes with an error similar to being unable to "GetInput", possibly related to the clicking issue above.

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• Vote for bugs which impact you!

  - by Sveta Smirnova

  Matt Lord already announced this change, but I am so happy, so want to repeat. MySQL Community Bugs Database Team introduced new button "Affects Me". After you click this button, counter, assigned to each of bug reports, will increase by one. This means we: MySQL Support and Engineering, - will see how many users are affected by the bug. Why is this important? We have always considered community input as we prioritize bug fixes, and this is one more point of reference for us. Before this change we only had a counter for support customers which increased when they opened a support request, complaining they are affected by a bug. But our customers are smart and not always open support request when hit a bug: sometimes they simply implement workaround. Or there could be other circumstances when they don't create a ticket. Or this could be just released version, which big shops frighten to use in production. Therefore, sometimes, when discussing which bug to prioritize and which not we can not rely only on "Affects paying customers" number, rather need to make guess if one or another bug can affect large group of our users. We used number of bug report subscribers, most recent comments, searched forums, but all these methods gave only approximation. Therefore I want to ask you. If you hit a bug which already was reported, but not fixed yet, please click "Affects Me" button! It will take just a few seconds, but your voice will be heard.

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• Make taskbar buttons fixed on Windows 7

  - by Tchypp

  Sometimes the application buttons on the Windows 7 taskbar change position by themselves. For example, if I have two windows of the same application opened, the first opened window should be the first button on the taskbar (to the left of the other) and the second opened window should be the second button on the taskbar (to the right of the other), but they switch places sometimes. I don't like this. How can I fix / configure this not to get rearranged? I am not using Aero, and the buttons of the same application are not grouped under a single button. !

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• IE Use Continues to Drop

  Perhaps because of security concerns, use of Microsoft's Internet Explorer browser has continued to drop worldwide.

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• How to prevent computer from automatically sleeping and/or hibernating?

  - by mehaase

  I'm running Ubuntu 12.04, and my laptop* won't wake from sleep/suspend/hibernate. (Is sleep the same thing as suspend?) I'm not even sure which of these things it's doing. When I am done working for the day, I lock my screen (Control-Alt-L). When I come back the next day, the screen is in power saving mode, and no amount of typing or clicking (on the usb keyboard/mouse or the builtin keyboard/trackpad) nor tapping the power button will bring it back to life. The only way I can get my machine to work is to hold down the power button until it shuts off, then press the power button again to turn it back on. Obviously, anything I had open from the previous day is pretty much gone -- in particular, my VMs all get rudely shut down without any warning. This is driving me INSANE. I spend the first hour of every work day trying to figure out how to get my computer to stop locking up over night. What I've tried: Editing the org.freedesktop.upower.policy to disable suspend and hibernate. Setting power management options in "Power" section of "System Settings". Looking at all power management options in the BIOS (none appear to be relevant to sleep/suspend/hibernate). Reading every forum post/askubuntu post that I can find that's even tangentially related to the subject. My question: how to disable the automatic sleep and/or hibernate (and/or anything similar) in Ubuntu 12.04. I don't care if it's still possible to sleep/suspend/hibernate/whatever by pushing buttons or running some command or reciting led zeppelin lyrics backwards. I just want my laptop to be ready for work in the morning. *The laptop is a Dell Latitude something or other. I don't want to get too specific because I've seen a lot of similar questions get closed for being too specific. I think my question is generic enough to stand -- it's a question about the latest, stable version of Ubuntu.

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• How can I reset windows 7 file permissions?

  - by ssb

  I looked at this post and it seemed to be close to what I want, but my case might be a little worse: How can I reset my windows 7 file permissions to a rational state? Basically a while back I (very stupidly) changed the permissions on all sorts of system folders, and eventually rendered my computer virtually unusable. I managed to hack administrator privileges back onto key folders and getting it working, but in doing so I only modified permissions a lot more away from the natural state. I'm looking at this icacls stuff, but ultimately I need to reset EVERYTHING back to what it was in The Beginning, before I messed with it, from the C: directory all the way down. Right now application data is what's giving me problems, and I can't get it to work no matter how much I fiddle with those specific permissions. I will be forever grateful for help on how to do this without having to reformat.

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• Is there an intuitive way to reopen Empathy's contact list?

  - by aef

  Since a short while I'm using Ubuntu Oneiric Ocelot (11.10) with gnome-shell (Gnome 3) and I'm trying to get accustomed to the default Empathy Instant Messaging client. When I hit the close button of Empathy's contact list the window disappears as expected. When I now start Empathy over the Gnome Activities menu the contact list reappears. That's not as easy as clicking a system tray icon back in Psi on Gnome 2 but it works for now. But when I start a conversation first and have an open conversation window, then close the contact list, and try to regain access to it by using Gnome Activities, I only get the conversation window into focus and no contact list appears. I only seem to be able to get the contact list back if I close the conversation window (and thereby signal the conversations to be over) and then use Gnome Activities again to get my contact list back. That's horrible. Is this intended? Is there something I'm missing?

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• Has anyone seen an HTTP 500 error when HTTPS traffic going through Pound Proxy forwards to an HTTP page?

  - by scientastic

  We have Varnish as our load balancer and reverse proxy cache for normal HTTP traffic. For HTTPS traffic, we use Pound proxy to unwrap the SSL and forward to Varnish, which then forwards to the back-end servers. This is used for our "checkout" process to encrypt credit card info in transition. However, on the last stage of checkout, users are always getting an HTTP 500 (Internal Server) error. It doesn't seem to be due to our back-end app server, by all tests I've tried. Does anyone know anything about how that transition works-- the transition back from HTTPS to HTTP and the interaction between Pound and Varnish-- and why it might cause 500 errors?

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• Java Preferential Treatment

  - by Jay

  I have icedtea6-plugin installed on my Ubuntu box. The weird thing is, when I am browsing the internet, certain website are able to use the Java and some websites are not. For instance, I am able to log in to my bank at nordea.dk. They use a Java applet to authenticate the user. But when I try to use keepvid.com, it says "Loading Java Applet". And then after a minute or two it says "Error: Please click here to download Java. If you already have Java, please restart your browser and try again." The thing is I've restarted my computer, closed and opened my browser(chromium) and none of it seems to help. Could someone please point me in the right direction to solve this problem? Thanks.

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• How to undelete files in TFS

  - by Tarun Arora

  Have you accidently deleted files from TFS and are looking at a way to undelete the file? You don’t have to undo your previous check in to get the files back, there is a simpler way. 01 – View Deleted items in Team Explorer Have you been wondering how you can view deleted items in Team Explorer? Well, go to tools, options, Source Control. From Visual Studio Team Foundation check ‘show deleted items in the Source Control Explorer’.  02 – Undelete files from TFS Simply right click the deleted file or folder and from the context menu select ‘Undelete’. This will roll back the files to the version before the delete operation was committed on them.  The undeleted changes now show up as pending changes in your workspace. You need to right click the folder and select Check In Pending changes from the context menu to restore the files. Add a comment and check in the files back to TFS to undelete them Right click the folder and view history. You’ll see both the check in that deleted the file/folder and the check in that restored it. So, that’s how you can restoring deleted files in TFS… Nice and simple… Right?

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• Rewritten NetBeans Platform Feed Reader Tutorial

  - by Geertjan

  The next tutorial that has been thoroughly restructured and rewritten is: NetBeans Platform Feed Reader Tutorial Originally written by Rich Unger, it was one of the very first NetBeans Platform tutorials that ever existed. In this particular rewrite, the entire structure of the tutorial has changed, in an attempt to make the flow more "bite size", rather than a big lump. Also, thanks to recent NetBeans Platform changes, there are no Bundle files anymore, all Strings are declared via @Messages annotations. Theoretically, the browser in the application could be a JavaFX WebView, though the browser part of the application isn't a central theme of the tutorial, hence only a reference is made to the JavaFX alternative. Here's what it looks like: Comments to the NetBeans Platform Feed Reader Tutorial are, as always, very welcome. 

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• How can I guarantee a solvable Fifteen Puzzle shuffle?

  - by Codemiester

  I am making a 15 Puzzle game in C# that allows the user to enter a custom row and column value up to a maximum of a 10 x 10 puzzle. I am having problems with the shuffle method. I want to make it so the puzzle is always solvable by first creating a winning puzzle then shuffling the empty space. The problem is it is too inefficient to call every click event each time. I need a way to invoke the click event of a button adjacent to the empty space but not diagonal. I also use an invisible static button for the empty spot. The PuzzlePiece class inherits from Button. I am not too sure how to do this. Here is what I have: private void shuffleBoard() { //5 is just for test purposes for (int i = 0; i < 5; i++) { foreach (Control item in this.Controls) { if (item is PuzzlePiece) { ((PuzzlePiece)item).PerformClick(); } } } } void PuzzlePiece_Click(object sender, EventArgs e) { PuzzlePiece piece = (PuzzlePiece)sender; if (piece.Right == puzzleForm.emptyPiece.Left && piece.Top == puzzleForm.emptyPiece.Top) { movePiece(piece); } else if (piece.Left == puzzleForm.emptyPiece.Right && piece.Top == puzzleForm.emptyPiece.Top) { movePiece(piece); } else if (piece.Top == puzzleForm.emptyPiece.Bottom && piece.Left == puzzleForm.emptyPiece.Left) { movePiece(piece); } else if (piece.Bottom == puzzleForm.emptyPiece.Top && piece.Left == puzzleForm.emptyPiece.Left) { movePiece(piece); } }

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• Insanity Day 3

  - by D'Arcy Lussier

  So on Tuesday (Sept 25th) I did my 2nd Insanity workout (for those keeping track, I’m not counting the fit test as #1) and it was MURDER on my legs. I wasn’t able to get to it yesterday, and I’m noticing a trend in this first week – I can easily push to do it every 2nd day, but life is just too crazy busy right now (yeah yeah, excuses right? I look at it more like priorities – I have a tech conference I’m running next week, crazy days right now). Today I moved to the 3rd workout – but honestly I couldn’t get into it. It was the cardio recovery day, which is a lot of stretching and stuff. I think if I had been doing the first two sessions back to back I’d need it, but I didn’t want to cool down today – I wanted to push! So I moved to the next DVD in the series but for some reason couldn’t get it to run on my computer, even with SlyDVD. So – back to Disc 1 and the Plyometric Cardio Circuit! Fantastic workout again this morning. Don’t get me wrong, I’m not all of a sudden in amazing shape, but I am noticing already that I seem to be somewhat better – I’m really looking forward to my next fit test at the end of the month!

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• Ubuntu works in try out but not when installed, how to fix?

  - by QVaren

  I've got quite a problem with it, perhaps the problem lies with me but I thought I fixed it, I believe the opposite now... Anyhow, I started off with a 64-Bit Windows 7 platform and I wanted something new then the same boring windows, I heard about Ubuntu before but I didn't see a reason to change it. Now I had found my reason, so what did I do was do the installation via an USB, I went "try out before installation" first and it worked perfectly, however... When I installed it, deleted my Window 7 and tried to reboot with my fresh oh-so-clean new OS, it didn't want to load. At a certain point it said to boot up from a bootable option or something like that. Where it came to was that I couldn't load it up. Now, I wanted to switch back to Windows 7 because it didn't work and now I can't switch back because my harddrive switched modus because of Linux files (From NTFS to 4ex or something, I forgot). I'm currently typing this in the try out version of Ubuntu since I can't switch back to either Windows 7 or to the installed version of Ubuntu. So, my question follows: Can I fix it by keeping Ubuntu? Because I like Ubuntu. Also a side note: I'm a total noob when it comes down to this sort of things.

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• Mozilla Prism

  Prism is an application that lets users split Web applications out of their browser and run them directly on their desktop

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• Apache/2.4.7 (Ubuntu) Server at localhost Port 80

  - by w3coder

  I am new at Ubuntu and LAMP. This problem is going on during making local server. Please help me. I have made local server. It is working on my browser : localhost/phpmyadmin But whhen I try localhost/joompark/installation/index.php on browser....... it show the Port 80 error. joompark is my folder name. All file and folder are right place var/www/joompark The Result is: Not Found The requested URL /joompark/installation/index.php was not found on this server. Apache/2.4.7 (Ubuntu) Server at localhost Port 80 Thanks in advance

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• How to use HTTP Handler to make a client2client communication? [closed]

  - by meorfi

  I'm new to Web programming! I try to make an app (something like Client to Client communication with C# Handlers and jQuery). I.E.: When 1Client make a click on his clientSide(browser), there paints one point, and on the same time the 2Client sees what 1Client did. And, in turn, where 2Client make a click on his browser, there paints one point, and the 1Client also sees what 2Client did. I could done already the configuration of IIS, I made an simple show Hello World and it run OK. And, further, what should i done.... Can you advice me, please, with some exemples, or tutorials, how to do this job. Sorry for my questions which seems to be not studied.

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• Include new rows in autofilter range

  - by user9645

  I am working with an excel 2007 worksheet that has the "filter" applied so that each column heading has a pull-down menu for sorting. When I add new rows to the end of the table by cut-n-paste from the last row, these new rows are not included in the sorting. I can't seem to get the newly added rows to be included in the filter range. I tried un-selecting and re-selecting the "filter" button and also tried the "reapply" button. The "clear" button is always greyed out. I can't seem to find any relevant help for this online anywhere. Not sure if it matters, but the heading row and the first column are set to be "sticky" (they don't scroll with the rest of the table.)

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