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• ASP.NET MVC: Is it "wrong" to use HTTP 500 via an AJAX request to return invalid form content?

  - by Daniel Schaffer

  Here's the situation: I've got two partial views. One has a form. What needs to happen is when the form is posted via an AJAX request, if the operation succeeds, the area with the second partial is repopulated with the content. However, if the posted data was invalid, the original partial is repopulated with an error message. I'm using jQuery and the ajaxForm plugin to handle the form posts and responses. Would it be "wrong"/bad coding/wtf-worthy to conditionally use $.html() to replace the content in one area when it's a 200, and a different area if it's a 500? To me, this idea smells, but I'm not sure how else to accomplish the goal.

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• noscript tag appears even if javascript is turned on in IE8

  - by Gaurav Sharma

  ghost noscript tag more info here I am facing exactly this issue, how shall I handle this for Internet Explorer browsers :-( ? Explanation: I have included the following noscript tag in my application's layout <noscript style="background:#ffcc00;font-size:200%;font-family:verdana;text-align:center;text-transform:uppercase;font-weight:bold;padding:0.8em;">javascript is disabled, please enable it first.</noscript> Now when I view this layout in IE8 the noscript tag CSS is displaying at the top of the page without the content in it, making the layout look faulty. Please help...

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• Sending UDP Packet in C#

  - by DOminik

  Hello everybody! I have a game server (WoW). I want my players to download my custom patches to the game. I've done a program that checks for update/downloading things. I want my program to send a packet to my game server if player have all my patches. I dont need any response from the server, it will handle it, but its another story. So I want to know, how to send a packet to a server. Thank you!

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• Using Mate's RemoteObjectInvoker with C# classes

  - by FigBug

  I'm using the Mate framework for Flex and communicating with a server running C#. I'm having trouble mapping C# classes to ActopnScript classes. I've got it working fine for simple classes and built in datatypes. If I have a C# method in my API that returns a API.Foo.Result what name do I use for my RemoteClass alias? Do I need to make a separate ActionScript class for each variation of the API.Foo.Result? How do I call C# method that takes a class as a parameter? Making an ActionScript class with members with the same names doesn't seem to work. What is the best way to handle C# classes that contain arrays of objects? The seem to get converted to ArrayCollections of Object. Is there a way to get them converted to an ArrayCollection of my specific class?

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• Rails ActiveRecord BigNum to JSON

  - by Jon Hoffman

  Hi, I am serializing an ActiveRecord model in rails 2.3.2 to_json and have noticed that BigNum values are serialized to JSON without quotes, however, javascript uses 64 bits to represent large numbers and only ~52(?) of those bits are available for the integer part, the rest are for the exponent. So my 17 digit numbers become rounded off, grrr. Try the following in the Firebug console: console.log(123456789012345678) So, I'm thinking that the json encoder should be smart enough to quote numbers that are too big for the javascript engines to handle. How do I fix up rails to do that? Or, is there a way to override the encoding for a single property on the model (I don't want to_s elsewhere)? Thanks.

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• custom Copy Responder in iphone

  - by sagar

  Hello ! I have a webview in my application. I want to handle when user copies something from web view, my custom method - should be triggered. I have tried following. I have placed following method in myViewCtr.m file -(void)copy:(id)sender{ NSLog(@"hi ! Hello "); } But nothing working - What should I do to implement the same ? Thanks in advance for sharing your great knowledge. Sagar

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• How to make TWebBrowser ignore accelerator chars of others controls?

  - by douglaslise

  I have a TWebBrowser placed on a form with the designMode enabled. Bellow the browser I have a close button with the Caption set to 'Clos&e'. When I am editing the contents of a document inside the WebBrowser and I press the key E the button close is called. It appears that it is treating TWebBrowser like other controls that don't handle keys and/or don't accept chars (e.g. TButton). How can I solve this? Thanks in advance.

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• Google App Engine - Blob Store Service with a Dispatcher Servlet

  - by Rahul

  I have a central dispatcher servlet that has a servlet mapping of : <servlet-mapping> <servlet-name>dispatcher</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> When i try to use the blob store service's createUploadUrl("/uploadComplete") it maps to a URL for e.g *'/_ah/upload/agp0d2VldG15cGljchsLEhVfX0Jsb2JVcGxvYWRTZXNzaW9uX18YEgw'*. Before the Blob store service can handle the upload and redirect to /uploadComplete; my dispatcher servlet gets called and i am therefore not being able to upload anything. Is there a servlet/ filter that i can map to /_ah/upload/* in my web.xml ? How do i avoid the dispatcher servlet from getting called before the Blob store service can do its thing?

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• iphone Core Data Unresolved error while saving

  - by Ahmed Kotb

  I am getting a strange error message from the core data when trying to save but the problem that the error is not reproducible ( it appears at different times when doing different tasks) the error message: Unresolved error Domain=NSCocoaErrorDomain Code=1560 UserInfo=0x14f5480 "Operation could not be completed. (Cocoa error 1560.)", { NSDetailedErrors = ( Error Domain=NSCocoaErrorDomain Code=1570 UserInfo=0x5406d70 "Operation could not be completed. (Cocoa error 1570.)", Error Domain=NSCocoaErrorDomain Code=1570 UserInfo=0x14f9be0 "Operation could not be completed. (Cocoa error 1570.)" ); } and the method that generates the error is: - (IBAction)saveAction:(id)sender { NSError *error; if (![[self managedObjectContext] save:&error]) { // Handle error NSLog(@"Unresolved error %@, %@, %@", error, [error userInfo],[error localizedDescription]); exit(-1); // Fail } } any idea for the reason of this message ? giving that it appears at random times

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• Java ServerSocket Multiple Listen Instances

  - by ikurtz

  i have a java game app that uses sockets to communicate with each other. the issue is when i do a socket listen (server), i can run another instance of the game on the same machine using the same port as before to listen, and it results in listening again. now i have two instances of the application both listening on the same port. you can imagine only one connects when a connection comes through. the question is: how do i prevent the app from listening on the same port as another instance is already listening to? thanks in advance. EDIT: serverSocket = new ServerSocket(serverPort, backlog); im using this. should i try to use: ServerSocket(int port, int backlog, InetAddress bindAddr) instead? EDIT: SOLVED! i did not handle the exception only trapped it. now it is working well. thanks for your inputs.

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• jQuery UI dialog + Ajax fails with IE 6-7-8

  - by user252849

  hey i have problem with jQuery-ui Dialog when using ajax $.ajax({ url: "folders.php", cache: false, data: { 'do' : 'Ajax' ,'_a' : 'ChangeMoviesFolder' ,'MovieIDS' : MovieIDS ,'toFolderID' : toFolderID ,'fromFolderID' : fromFolderID }, context: document.body, open: function(event, ui) { alert('open'); }, error : function(XMLHttpRequest, textStatus, errorThrown){ // Handle the beforeSend event // alert("responseText: "+errorThrown.message); }, success: function(data){ $('input.checkMovie').attr('checked',0); $("#resultsTable").find('tr.selectable-row').removeClass('active'); if (data == '1') { window.location = WWW_ROOT+'movies.php?do=List&FolderID='+toFolderID; } $dialog.dialog("close"); }}); when using IE ajax never get to success option in error i got "This method cannot be called until the open method has been called" Its happen only in IE. Does any one may know what the problem might be ? (all vars are ok and works perfectly in FF & chrome) thanks.

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• What is the life cycle of the XNA GraphicsDevice on the Xbox 360?

  - by David Brown

  I'm working on an XNA project that doesn't use the built-in Game class, mostly for learning purposes (so I can mess with different game loop types, etc). It's only designed for the Xbox 360, because the hardware is consistent and I don't have to worry about compatibility among different PC hardware configurations. So far, it's working well and I can clear the screen to a color, but I'd like to make sure I handle the GraphicsDevice correctly before moving on. What exactly is the life cycle for the GraphicsDevice on the Xbox 360? Is it ever lost or reset automatically? I know that on Windows, it's lost when the window loses focus, but the Xbox obviously doesn't manage focus. It appears to even keep the graphics device when the Guide pops up, which is the closest thing I can find to "losing focus" on the Xbox. I'd like to think it's simply a matter of "fire and forget," which would make a lot of other things much easier (only needing to load content once, for instance). But I want to make sure.

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• PHP - Opening uploaded DOCX files with the correct MIME TYPE

  - by user270797

  I have users uploading DOCX files which I make available for download. The issues we have been experiencing is the unknown mime types of DOCX files which causes IE to open these docs as Zip files. It is running on a Windows/IIS server. Because this is a shared host, I cannot change any server settings. I was thinking that I could just write some code that would handle DOCX files, perhaps custom output: if (extension=docx) { header("Content-Disposition: attachment; etc) header('Content-Type: application/application/vnd.openxmlformats-officedocument.wordprocessingml.document'); Output the file contents etc } Would this be a viable solution?? If so, can someone help fill in the gaps? (PS I know the above syntax is not correct, just a quick example)

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• How to automatically fix MISSING reference in a dll when a referenced library is broken in VB6?

  - by systempuntoout

  What do you do when you break compatibility on a common library used by many other libraries? What i usually do is: For every dll that reference the broken one Checkout dll Checkout vbp project Open vpb project with VB6 Ide Click on References button Uncheck MISSING reference and OK Click on References button Check references and OK Click on Make dll Close project This can be a pita activity, when you have many Dll to recompile and it can be error prone because you could miss some Dll (anyway we have continuous integration that alert this cases). What's your best practice to handle this scenario?

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• solution for COMET and PHP

  - by codemaker

  Is there a real solution for COMET AND PHP combination? Basically, I've come to a point that I need to update a user home page periodically whenever there is new data in the database. As far as I understand, I need to open a persistent connection between my server and my clients browsers to update the contents of their home page as soon as new info. available without dedicating a lot of resources but I had no luck finding anything clear about this issue. I read many articles suggests that PHP is not a good language to implement COMET. My web application is completely programmed in PHP and I don't want to learn another language but if I'm forced to, Would you suggest a good language to start with? Do you think that I can program an interface just to handle this issue? Thanks in advance.

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• How to stop nant exec task putting ( ) around command line

  - by Sam

  I have looked through the nant documentation and sourceforge faq and can't find the answer to this question. The exec task in nant puts ( ) around the command line parameters it generates, so for example this task below would generate: mallow ( -1 ) <exec program="${build.tools.wix}\mallow.exe" workingdir="${build.out.xxx}"> <arg value="-1" /> </exec> The other open source tool I'm using - mallow - cannot handle this. Does anyone know of a way to stop nant putting the ( ) around the arguments? Thanks.

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• Empty list in appengine datastore: java vs python

  - by lOranger

  I have the following java model class in AppEngine: public class Xyz ... { @Persistent private Set<Long> uvw; } When saving an object Xyz with an empty set uvw in Java, I get a "null" field (as listed in the appengine datastore viewer). When I try to load the same object in python (through remote_api), as defined by the following python model class: class Xys(db.Model): uvw = db.ListProperty(int) I get a "BadValueError: Property uvw is required". When saving another object of the same class in python with an empty uvw list, the datastore viewer print a "missing" field. Apparently empty lists storage handling differs between Java and python and lead to "incompatible" objects. Thus my question: Is there a way to, either: force Java to store an empty list as a "missing" field, force Python to gracefully accept a "null" list as an empty list when loading the object? Or any other suggestion on how to handle empty list field in both languages. Thanks for your answers!

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• Bluehost internal server error

  - by Aditya

  Hello everyone, When i am creating the setup of my rails application on bluehost,it throw following error:- Internal Server Error The server encountered an internal error or misconfiguration and was unable to complete your request. Please contact the server administrator, [email protected] and inform them of the time the error occurred, and anything you might have done that may have caused the error. More information about this error may be available in the server error log. Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request. Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.8l DAV/2 mod_auth_passthrough/2.1 FrontPage/5.0.2.2635 Server at team.cipher-tech.com Port 80 Please help me.It's urgent. Thanks in advance..

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• Perl equivalent to Java's "throws" clause

  - by Konerak

  Is there a way in Perl to declare that a method can throw an error (or die)? EDIT: What interests me the most is a way to get the compiler or IDE to tell me I have an unchecked exception somewhere in my code. I always loved how in Java, a method could handle an Exception and/or throw it. The method signature allows to put "throws MyException", so a good IDE/compiler would know that if you use said method somewhere in your code, you'd have to check for the Exception or declare your function to "throws" the Exception further. I'm unable to find something alike in Perl. A collegue of mine wrote a method which "dies" on incorrect input, but I forget to eval-if($@) it... offcourse the error was only discovered while a user was running the application. (offcourse I doubt if there is any existing IDE that could find these kind of things for Perl, but atleast perl -cw should be able to, no?)

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• Perl: catch error without die

  - by Pmarcoen

  I'm playing around with error handling and got a little problem. I connect with a database using the DBI module. I do my own error handling by using a subroutine that I call upon an error. I can catch my own dies and handle them just fine but when my database connection fails, the DBI module apparently prints out it's own die : DBI connect(...) failed: ORA-12154: TNS:could not resolve the connect identifier specified (DBD ERROR: OCIServerAttach) at ... How would I go about catching this ? I tried using $SIG{DIE} like so : local $SIG{__DIE__} = sub { my $e = shift; print "Error: " .$e; }; This is on the bottom of my main file, in this file I also call the connect subroutine that is available in a module of my own. I also tried putting this piece of code on the bottom of my module but it still prints the error without the "Error:" in front of it.

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• Access to Apache::DBI from DBI

  - by hpavc

  Is it possible to access a Apache::DBI database handle from a perl script (that isn't running under mod_perl). What I am looking for is database pooling for my perl scripts, I have a fair number of database sources (oracle/mysql) and a growing number of scripts. Some ideas like SQLRelay, using Oracle10XE with database links and pooling, and or convert all scripts to SOAP calls, etc are becoming more and more viable. But if there was a mechanism for reusing Apache::DBI I could fight this a bit. I have no non-perl requirements, so we don't have a php/jdbc implementation or similar to deal with. Thanks

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• Embedded media player gets inconsistent currentPosition on both IE8 and Firefox3

  - by logoin

  I have a embedded media player in the browser that is controlled by javascript to handle all the mediaChange event. The code looks like mediaChangeHandler: function(media) { if (media && this.offset && !this.offsetJumpPerformed) { if (parseFloat(media.duration) > this.offset) { pos = parseInt(pos); this.getPlayer().controls.currentPosition = pos; alert("jump to position: " + this.getPlayer().controls.currentPosition); this.play(); this.offsetJumpPerformed = true; alert("currentPosition:" + this.getPlayer().controls.currentPosition); } } } The first alert indicates the currentPosition is where I want it to be. However, the second alert would get currentPosition that's couple seconds less than what I have set up. Does anyone have idea why? I tried googled it but haven't found anything useful. Thanks!

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• How far does Dependency Injection reach?

  - by Baddie

  My web app solution consists of 3 projects: Web App (ASP.NET MVC) Business Logic Layer (Class Library) Database Layer (Entity Framework) I want to use Ninject to manage the lifetime of the DataContext generated by the Entity Framework in the Database Layer. The Business Logic layer consists of classes which reference repositories (located in the database layer) and my ASP.NET MVC app references the business logic layer's service classes to run code. Each repository creates an instance of the MyDataContext object from the Entity Framework Repository public class MyRepository { private MyDataContext db; public MyRepository { this.db = new MyDataContext(); } // methods } Business Logic Classes public class BizLogicClass { private MyRepository repos; public MyRepository { this.repos = new MyRepository(); } // do stuff with the repos } Will Ninject handle the lifetime of MyDataContext despite the lengthy dependency chain from the Web App to the Data Layer?

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• Black background while copying image from Firefox

  - by Eduardo Mauro

  An image is copied from Firefox into the Clipboard. My program gets it from clipboard and saves as a JPEG image. For some reason the image is saved with a black background. If I open the same URL in IE and copy the image into the Clipboard, the image is saved correctly by my program. I am using Delphi 7. I also tried to copy the image from Firefox into Microsoft Paint and again the black background. Does anyone has a tip in how to handle such problem.

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• IntelliSense based snippet handling with Visual Studio 2010 SDK MEF Based text editor

  - by Nicolai Ustinov

  Using the new Visual Studio 2010 SDK developing against the MEF based editor structure there's a question: How can I use the MEF editor interfaces to handle snippet behavior in IntelliSense? The ICompletionSession itself is not a problem (e.g. get the available snippets) rather filling the snippet, handling the subsequently expected actions like tab, enter behavior, text replacement, etc. Is there any way to do that without a language service? Checking the built-in behavior in Visual Studio base editor implementation they built the MEF interfaces on top of a set of language service based objects.

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