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• How to break whenever any line of code executes

  - by Aequitarum Custos

  I have a very strange bug, which I believe is caused by some code we have executing, but I'm not sure where. We can reproduce it to the point it happens whenever we click Tab, but short of putting a break point at the beginning of every method in the project to find out what is executing. Is there a way to set visual studio to break whenever anything executes? For those curious about the problem, every now and then, we have a few Rich Text Boxes that refuse to lose focus. You can't click out of it or tab out of it. We have no On Validation or On Text Changed events attached to the control, and believe it's an event attached somewhere else to something we just aren't noticing.

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• In WPF, how do I update the object that my custom property is bound to?

  - by Timothy Khouri

  I have a custom property that works perfectly, except when it's bound to an object. The reason is that once the following code is executed: base.SetValue(ValueProperty, value); ... then my control is no longer bound. I know this because calling: base.GetBindingExpression(ValueProperty); ... returns the binding object perfectly - UNTIL I call base.SetValue. So my question is, how do I pass the new "value" on to the object that I'm bound to?

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• Upload and preview image in client side without posting back

  - by Ahmy

  I need to upload an image and then preview it without posting back as i need to have a file upload control(even HTMLinputfile or ASPfileupload) then the user will browse to select image after selecting (browsing) there will a button(HTMLInputButton) that will save the uploaded image and preview it. I have the following code : <div> <input id="UploadInput" type="file" value="Upload" /> <br /> <input id="PreviewBtnInput" type="button" value="Preview" onclick="ShowPreview()" /> <br /> <img id="ImgUploaded" /> </div> So how can i do this task ? Thanks in advance for any reply but please if any one has a link for article that talk about this issue please i need a clear code not article details.

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• How to determine ASP.NET's generated ID's from codebehind?

  - by Matthew Scharley

  In ASP.NET, when you give a tag an ID it generates a unique HTML id for the element based on the control hierachy, ie. <asp:Panel ID="test" runat="server"> ... </asp:Panel> <!-- Becomes... --> <div id="plc_lt_zoneContent_PagePlaceholder_PagePlaceholder_lt_test_test"> ... </div> Is there some way of determining the generated id in the codebehind file? I need to generate some Javascript that uses the id.

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• No progress bar in IE8 while executing the download using PHP

  - by user292918

  I am giving downloads to user using the PHP code below but when user downloading they are not able to see the progressbar in IE8 when clicked on save button. Please solve this. Thanks in advance. header('Content-Description: Songsbin.com - Downlaod'); header('Content-type: audio/mpeg'); header('Content-Disposition: attachment; filename='.$filename1); header('Content-Transfer-Encoding: binary'); header('Expires: 0'); header('Cache-Control: must-revalidate, post-check=0, pre-check=0'); header('Pragma: public'); header('Content-Length: '.filesize($file)); ob_clean(); flush(); readfile($file);

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• Which tool can list writing access to a specific variable in C?

  - by Lichtblitz

  Unfortunately I'm not even sure how this sort of static analysis is called. It's not really control flow analysis because I'm not looking for function calls and I don't really need data flow analysis because I don't care about the actual values. I just need a tool that lists the locations (file, function) where writing access to a specific variable takes place. I don't even care if that list contained lines that are unreachable. I could imagine that writing a simple parser could suffice for this task but I'm certain that there must be a tool out there that does this simple analysis. As a poor student I would appreciate free or better yet open source tools and if someone could tell me how this type of static analysis is actually called, I would be equally grateful! EDIT: I forgot to mention there's no pointer arithmetic in the code base.

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• RMI client tracking

  - by 0000

  I'm building a Client / Server app that has some very specific needs. There are 2 kinds of servers: the first kind provide most of the remote procedures and clients connect to these directly, while the second kind is a single server that should keep track of what users are active (clients) and how many servers of the first kind are active when a method is called. The main thing is that the monitor should ONLY connect to the servers and not the clients directly. My first idea was to implement a simple login/logout rmi method when a client connects/ disconnects and keep track of those in a list but the main problem is when a client or server end abnormally. For example, if a client goes offline abruptly the server should somehow be notified and update the list accordingly, while if a server goes out all of the clients connected to it should be marked as not active in the control server. Any ideas of how to implement this functionality would be appreciated.

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• What would you like to see in a book about Rails 3?

  - by Ryan Bigg

  Hello, I'm thinking of writing a book about Rails 3 and I have a basic idea of what I want to write about, but really what I need is that little bit of polish from the community. The book is planned to cover: A little bit of Ruby Version control using Git Testing using RSpec & Cucumber Life without Rails (Rack) Developing an application in Rails (vague, I know, sorry! Work in progress) Javascript testing using Selenium Background processing Document databases (a tentative maybe, at this stage) Monitoring an application And a little more. So, I leave this question for you: What do you want to see in a book about Rails 3, which goes from "This is Rails" to "This is how Rails scales"?

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• The cost of finalize in .Net

  - by Jules

  (1) I've read a lot of questions about IDisposable where the answers recommend not using Finalize unless you really need to because of the process time involved. What I haven't seen is how much this cost is and how often it's paid. Every millisecond? second? hour, day etc. (2) Also, it seems to me that Finalize is handy when its not always known if an object can be disposed. For instance, the framework font class. A control can't dispose of it because it doesn't know if the font is shared. The font is usually created at design time so the user won't know to dispose it, therefore finalize kicks in to finally get rid of it when there are no references left. Is that a correct impression?

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• C#: split a string into runs of characters, numbers and delimited strings and process it

  - by nrkn

  OK my regex is a bit rusty and I've been struggling with this particular problem... I need to split and process a string containing any number of the following, in any order: Chars (lowercase letters only) Quote delimited strings Ints The strings are pretty weird (I don't have control over them). When there's more than one number in a row in the string they're seperated by a comma. They need to be processed in the same order that they appeared in the original string. For example, a string might look like: abc20a"Hi""OK"100,20b With this particular string the resulting call stack would look a bit like: ProcessLetters( new[] { 'a', 'b', 'c' } ); ProcessInts( 20 ); ProcessLetters( 'a' ); ProcessStrings( new[] { "Hi", "OK" } ); ProcessInts( new[] { 100, 20 } ); ProcessLetters( 'b' ); What I could do is treat it a bit like CSV, where you build tokens by processing the characters one at a time, but I think it could be more easily done with a regex?

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• How to get the selected item from UL using jQuery?

  - by Vibin Jith

  I am creating a tab control using Ul and Divs. Ul is used to display the tab heads. When the user selects one Tab (ie , 'Li') ,the tab back color get changed with respect to others. I want to get the Selected and not selected li in that Ul . I used $(".tab li:selected").css("background-color","red"); $(".tab li:deselected").css("background-color","white"); It 's not working, I know the code does not work .just guess it. Now may you understood my problem,right?

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• how to hightlight a div if the page.isvalid=false.

  - by Nimesh

  I wanna high light particular div when the page.isvalid=false. on the pageload i am able to get display the error message. But the issue is that i am not able to highlight the control which is required. I have a js function which sets the error class to the div. Its working fine when i click on a button. On the page load i wanna set this as well. can i do this using some jquery??? or something other way.. Please let me know how to do this.... share your ideas.... Thanks

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• How to diagnose, and reverse (not prevent) Unicode mangling

  - by Steve Bennett

  Somewhere upstream of me, "something" happened that looks like unicode mangling. One symptom is that a lowercase u umlaut (ü) gets converted to "ü" (ie, character FC gets converted to C3 BC). Assuming that I have no control over this upstream process, how can I reverse-engineer what's going on? And if that is possible, can I crank the sausage machine backwards and get the original text back? (If it helps to understand this case, the text I received was in the form of a MySQL dump. I think somwewhere in the dump/transport process it got mangled.)

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• When to rewrite vs. upgrade?

  - by MrGumbe

  All custom legacy software needs changing, or so say our users. Sometimes they want a feature or two added and all that is necessary to change a bit of code, add a control, or some other minor upgrade task. Sometimes they want to ditch their error-prone VB5 desktop solution and rewrite the whole thing as a rich Web 2.0 ASP.NET MVC application. More often, however, the scope of changes to legacy functionality lies somewhere between these two extremes. What rules of thumb to you use to decide whether you should upgrade an existing application or start from scratch?

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• Cloud Apps and Single Sign-On (AD integration)

  - by Pablo Alvim

  I've been investigating some cloud vendors and the ability to implement single sign-on with them, especially when it comes to AD (Active Directory) integration. So far I've learned that with Azure this is possible through ADFS and the AppFabric Access Control offer. In AWS, since it is possible to create a VPN and see EC2 instances as a natural extension of a private datacenter, I believe implementing SSO would be rather simple (not sure if I'm right on this one... Please correct me if I'm wrong). With App Engine though, even though there is some documentation on AD synchronization (not full integration) for Google Apps, I'm struggling to find out whether AD integration would be possible... Is there any strategy for that? Any bit of information on cloud apps and AD integration will be appreciated!

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• Controlling a browser from Python

  - by Noio

  I am looking for a way to control a browser from Python, i.e. fill out form fields and submit them, possibly call JS functions. I've looked around a bit, but as far as I could see PyWebKitGtk only lets you show the browser as a GUI element, not interface with it. Is there a way to do this easily? I wrote my program logic in Python, and I would hate to port it to JS. Besides that, even if I'd use pure JS "bookmarklets", those wouldn't be able to read/write to my local filesystem, would they? P.S. to quell your suspicions, I'm not trying to automatically fill out forum account creation forms or something similarly spammious, though the task is technically similar. I need to crawl/scrape sites for my research project.

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• iPad UiTableView concatenate question

  - by rasputin

  Hi! I need make a application for iPad. The App need a control seem to Twitter iPad App that show tables and when you push a cell open other table and put the table over. You can make horizontal scroll with these tables. In this link can see the App Twitter and tableviews function: http://www.youtube.com/watch?v=RIJTXNfGHuM I don't know how make a similar functionality. Can you help me or you know how can make that functionality? Thank you very much!!

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• controlling the order of submitted futures

  - by mac

  In this example, i am submitting a few files to my comparator object. It all works fine, except that i noticed that order in which files are submitted is not always teh same order in which they are returned. Any suggestions on how i can better control this? ExecutorService pool = Executors.newFixedThreadPool(5); CompletionService<Properties> completion = new ExecutorCompletionService<Properties>(pool); for (String target : p.getTargetFiles()) { completion.submit(new PropertiesLoader(target, p)); } for (@SuppressWarnings("unused") String target : p.getTargetFiles()) { Properties r = null; try { r = completion.take().get(); } catch (InterruptedException e) { e.printStackTrace(); } catch (ExecutionException e) { e.printStackTrace(); } p.addTargetFilesProperties(r); } pool.shutdown();

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• CF - DataGrid onClick event (or similar) for the cell / row ?

  - by no9

  I want to use DataGrid. I parse the data from an XML. In the XML for each row i have a tag that holds a specific command. I want that the user can click on any cell of the row (or a specific one), and i need to catch the click event execute the command and redirect to another form... I can do this with custom control made of panels and buttons and such ... but can u use DataGrid to achieve this? Also i tested Datagrid and i noticed that on some emulators (like 6.5 VGA) clicking the cells dont work. I can click the first cell in a row, but i cannot click the second... third... etc. Any suggestions?

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• What is wrong in this json string?

  - by bala3569

  My json string looks like this, {"id" : "38","heading" : "Can you also figure out how to get me back the 10 hours I sp.....","description" : "Im having a very similar problem with the Login control - again it always generates a default style containing border -collapse -only in this case .....","img_url" : "~/EventImages/ EventImages1274014884460.jpg","catogory" : "News","doe" : "15-05-2010 "} But get the error, unterminated string literal.... EDIT: I used this but it didn't work, var newjson = cfreturn( """" & ToString( HfJsonValue ).ReplaceAll( "(['""\\\/\n\r\t]{1})", "\\$1" ) & """" ) ; var jsonObj = eval('(' + newjson + ')'); Error: missing ) after argument list Source Code: var newjson = cfreturn( """" & ToString( HfJsonValue ).ReplaceAll( "(['""\\\/\n\r\t]{1})", "\\$1" ) & """" ) ;

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• How to access Dispatcher in Silverlight tests?

  - by bluebit

  I am using the SL unit test framework for tests (http://code.msdn.microsoft.com/silverlightut). My code is heavily client-server communications dependant, and I access the GUI dispatcher in several places to make sure important data is only accessed on a single thread (ie. the GUI thread). This dispatcher seems unavailable in the unit tests - I have tried using Deployment.Current.Dispatcher and even created an instance of a blank control to try use its own dispatcher, but both don't work. The code inside of Dispatcher.BeginInvoke() just never executes, even if I include a Thread.Sleep afterwards.

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• Cannot connect to MySQL 4.1+ using old authentication

  - by B T

  I'm trying to connect to a mySQL database at http://bluesql.net, but when I try to connect, it gives this error: Connect Error (2000) mysqlnd cannot connect to MySQL 4.1+ using old authentication I've looked into this, and it has to do with some old password scheme used before MySQL 4.1. Newer versions have the option to use old passwords, which I've read may cause this problem. I'm running php 5.3, and connecting with mySQLi (new mysqli(...)). I'm hoping I can do something in the code to connect to the DB at bluesql.net - clearly I don't control how their database is set up. Downgrading php versions isn't an option. Anyone have any ideas?

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• is opening and closing of factory contolled by web.xml?

  - by akshay

  This post is related to post InvalidStateException while trying to enter data into DB. Do i need to put some entries in web.xml?Does web.xml control opening and closing of factory?I saw folloing entries in web.xml of another similar project . <resource-ref> <res-ref-name>jms/XYConnectionFactory</res-ref-name> <res-type>javax.jms.ConnectionFactory</res-type> <res-auth>Container</res-auth> <res-sharing-scope>Unshareable</res-sharing-scope></resource-ref> <resource-env-ref> <resource-env-ref-name>rep/xyAppConfig</resource-env-ref-name> <resource-env-ref-type>java.util.Map</resource-env-ref-type></resource-env-ref> What does this entries do?

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• Add Wordpress Video Gallery from YouTube User account to template

  - by Derek Organ

  I'm trying to create a small gallery of my youtube videos in wordpress. I need to have full control of style though. What i'm looking to do is have one big video (latest) and the next three as small thumbs underneath that. Can anyone recommend the best way to do this. I've can get use RSS feed from my youtube page to get a list of the videos. I now need a simple way to embed this info in my template.

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• Architecture of a secure application that encrypts data in the database.

  - by Przemyslaw Rózycki

  I need to design an application that protects some data in a database against root attack. It means, that even if the aggressor takes control over the machine where data is stored or machine with the application server, he can't read some business critical data from the database. This is a customer's requirement. I'm going to encrypt data with some assymetric algorithm and I need some good ideas, where to store private keys, so that data is secure as well as the application usability was quite comfortable? We can assume, for simplicity, that only one key pair is used.

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