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• Monitoring folders for changes

  - by blcArmadillo

  I'm working on a project that will require an application that watches a list of directories the user specifies for changes. Also, I'd like to give the users the option of running the application as a service or on an individual basis. Since users can choose to run it on an individual basis I don't think listening for some operating system event triggered by the addition or deletion of files (if such events exist) would be sufficient. I thought about maybe calculating a checksum for the deepest folder and then building up. I could then compare these checksums on subsequent scans to try and pinpoint where the changes have occurred. Would that be an appropriate solution; if not what would be the best way of doing this in an efficient manner? Also, I'm not quite sure what to tag this as so if you have any recommendations let me know and I'll as them as I see fit. EDIT: I'll need this method to work on Windows, OS X, and ideally Linux

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• What would you recommend for a large-scale Java data grid technology: Terracotta, GigaSpaces, Cohere

  - by cliff.meyers

  I've been reading up on so-called "data grid" solutions for the Java platform including Terracotta, GigaSpaces and Coherence. I was wondering if anyone has real-world experience working any of these tools and could share their experience. I'm also really curious to know what scale of deployment people have worked with: are we talking 2-4 node clusters or have you worked with anything significantly larger than that? I'm attracted to Terracotta because of its "drop in" support for Hibernate and Spring, both of which we use heavily. I also like the idea of how it decorates bytecode based on configuration and doesn't require you to program against a "grid API." I'm not aware of any advantages to tools which use the approach of an explicit API but would love to hear about them if they do in fact exist. :) I've also spent time reading about memcached but am more interested in hearing feedback on these three specific solutions. I would be curious to hear how they measure up against memcached in the event someone has used both.

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• MVVM (ICommand) in Silverlight

  - by Andrey Khataev

  Hello! Please, don't judge strictly if this question was discussed previously or indirectly answered in huge nearby prism and mvvm blogs. In WPF implementation of RelayCommand or DelegateCommand classes there is a such eventhandler /// <summary> /// Occurs whenever the state of the application changes such that the result of a call to <see cref="CanExecute"/> may return a different value. /// </summary> public event EventHandler CanExecuteChanged { add { CommandManager.RequerySuggested += value; } remove { CommandManager.RequerySuggested -= value; } } but in SL subset of namespaces there are no CommandManager class. And this is where I'm stuck. I haven't yet found an workaround for this in MVVM adoptation for SL (PRISM is so complex for me yet). Different simple HelloWorldMVVM apps don't deal with at all. Thanks in advance and sorry for my English -)

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• How to center map on marker and open marker's InfoWindow in one method

  - by sMariusz

  I'm using Google Map APIv2. On my webpage I've a sidebar containing a list of markers with onclick event executing showDetails method, that looks like: GMarker.prototype.showDetails=function() { map.panTo(this.getLatLng()); this.openInfoWindowHtml(this.details); }; The problem is that i cannot both panTo and openInfoWindowHtml in one method, it pans but won't open tooltip and when i change method to: GMarker.prototype.showDetails=function() { this.openInfoWindowHtml(this.details); map.panTo(this.getLatLng()); }; it opens tooltip but won't center map to the marker's anchor coordinates. Even using wait function doesn't solve my problem. What am I doing wrong?

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• ASP.Net Javascript integration

  - by tcables

  I am trying to use the following script in asp.net: <script language="javascript" type="text/javascript"> function checktext() { var txt = document.getElementById('tbComments'); if (txt.Text.Length > 0) { alert('Thank you for submitting feedback.'); return true; } else { alert('Sorry, you must enter text before submitting.') return false; } } </script> <asp:Button ID="btnSave" runat="server" Text="Submit" onclick="btnSave_Click" OnClientClick="checktext();" /> I have tried using it on the onclick event.. the script will just not work at all. Any Ideas?

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• Triggers in Entity Framework - Need advice

  - by jaklucky

  Hi all, I am new to Entity Framework and please pardon my ignorance. We have a simple application written using SQL Server and ADO.Net. Now we have got a new requirement that, whenever a particular rows get updated by our application, some business logic has to happen. I have been looking into Triggers in SQL server and it looks like we can do it using triggers. I am also looking at Entity Framework's OnPropertyChange capability. Is it possible to do it with "OnPropertyChange"? I mean, Can I create a model and implement "OnPropertyChange" method? And when our application modifies the rows using ADO.Net, then will it fire "OnPropertyChange" event so that my custome code in "OnPropertyChange" excutes? Thank you in advance for your inputs, Suresh

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• Actionscript problems with social share encoding

  - by Rittmeyer

  Hi, I'm trying to make some "social share" buttons at my site, but the urls I generate just don't get decoded by this services. One example, for twitter: private function twitter(e:Event):void { var message:String = "Message with special chars âõáà"; var url:String = "http://www.twitter.com/home?status="; var link:URLRequest = new URLRequest( url + escape(message) ); } But when twitter opens up, the message is: Message with special chars %E2%F5%E1%E0 Something similar is happening with Facebook and Orkut (but these two hide the special chars). Someone know why is this happening?

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• CAsyncSocket and ThreadPool problem

  - by zabulus

  I have a server application with such structure: There is one object, call him Server, that in endless cycle listens and accepts connections. I have descendant class from CAsyncSocket, that has overriden event OnReceive, call him ProxySocket. Also I have a thread pool with early created threads. When connection is received by server object he accepts the new connection on the new object ProxySocket. When data arrives to the ProxySocket, he creates a command object and gives it to thread pool. In this command object I giving the socket handle of a ProxySocket. When new object of command is creating - I creating a new Socket in working thread and attach handle to it. My issue is next: When command ends, socket doesn't close, I just detach handle it and set CSocket handle to INVALID_SOCKET value, as planned. But my first ProxySocket object doesn't receives messages of new data receiving after that. How can I solve this?

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• Custom roles in ASP.NET

  - by MainMa

  Hi, I am working on an ASP.NET website which uses forms authentication with a custom authentication mechanism (which sets e.Authenticated programmatically on protected void Login_Authenticate(object sender, AuthenticateEventArgs e)). I have an ASP.NET sitemap. Some elements must be displayed only to logged in users. Others must be displayed only to one, unique user (ie. administrator, identified by a user name which will never change). What I want to avoid: Set a custom role provider: too much code to write for a such basic thing, Transform the existing code, for example by removing sitemap and replacing it by a code-behind solution. What I want to do: A pure code-behind solution which will let me assign roles on authenticate event. Is it possible? How? If not, is there an easy-to-do workaround?

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• Question about how to read the Safari/Chrome developer tool result

  - by richard

  Hi, I am using the developer tool in chrome (i think it is the same as safari). I did a timeline when I load wwww.yahoo.com. I attached the screen shot: http://yfrog.com/4jpicture2yyp You see: * Send Request (http://www.yahoo.com) * Receive Response (http://www.yahoo.com) * Receive Response (http://www.yahoo.com) * Event (unload) * Function Call * Recalculate Style * Recalculate Style * Recalculate Style * Parse What I don't understand is why 'Parse' happens AFTER Function call and Recalculate Style? Shouldn't it need to parse HTML source FIRST Before it parses CSS file (I assume which triggers the 'Recalculate Style') and Java Script file (I assume which triggers the 'Function Call')

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• How do you keep yourself and your co-workers from creating huge classes

  - by PieterG

  Stackoverflow users, How do you keep yourself from creating large classes with large bodied methods. When deadlines are tight, you end up trying to hack things together and it ends up being a mess which would need to be refactored. For me, the one way was to start with test driven development and that lends itself to good class design as well as the SRP (Single Responsibility Principle). I also see developers just double clicking on controls and typing out line after line in the event method that gets fired. What are your suggestions?

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• Best way to implement a 404 in ASP.NET

  - by Ben Mills

  I'm trying to determine the best way to implement a 404 page in a standard ASP.NET web application. I currently catch 404 errors in the Application_Error event in the Global.asax file and redirect to a friendly 404.aspx page. The problem is that the request sees a 302 redirect followed by a 404 page missing. Is there a way to bypass the redirect and respond with an immediate 404 containing the friendly error message? Does a web crawler such as Googlebot care if the request for a non existing page returns a 302 followed by a 404?

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• Android x86 porting, unable to make it work

  - by Mr G

  I'm kind of new to the whole porting issue and I got to it because of the slowness in the emulator provided with the Android SDK. I downloaded the android-x86-3.2-RC2-eeepc and android-x86-3.2-RC2-tegav2 ISO-es (from this site) and tried them on the VirtualBox but have no internet connection on the eeepc version and the tegev2 wont event start. I tried the VirtualBoxHowTo but got nothing, on both Windows and Linux platforms. the only thing I managed to understand is that to use this on a VM you need to build it for VM. Can anyone help me on this? P.S.: I need the HoneyComb version (3.2) and the pc I have is a AMD 6 core on and Asus Crosshair Extreme motherboard, Windows 7 or Ubunutu 11.10. (both OS are 64bit)

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• Subscribing to MSMQ over the internet

  - by Nathan Palmer

  I haven't been able to find a clear answer to this problem. Is there a good way to subscribe to a MSMQ through the internet? Ideally I need security both in authentication and encryption for this connection. But I would like the subscriber to act just like any other client that would be subscribed on the local network. I believe I have a couple of options here Expose the MSMQ ports publicly Put the MSMQ behind some type of WCF service (not sure if that works for a subscriber) What other options do I have? We're sitting in a .NET environment and the main problem domain that is trying to be solved is to change the remote connections from a pulling system to an event based system to reduce the load on the main server.

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• Programmatically press "Left" key in a text input

  - by Anurag

  I am trying to programmatically fire a key event to go left in a text box, but not having any luck. The input element has focus and the cursor is at the end. I'm trying to get the cursor to move left one step - before the letter "F". ABCDEF| Here's the code so far: HTML <input id="a" type="text" /> Javascript var keyEvent = document.createEvent("KeyboardEvent"); var keyLocation = '0x00'; var keyIdentifier = "Left"; keyEvent.initKeyboardEvent("keypress", true, true, window, keyIdentifier, keyLocation, false); $("a").dispatchEvent(keyEvent); Saved a quick demo on jsfiddle if you want to see the whole code - http://jsfiddle.net/Vsafv/ I am not interested in making this cross-browser (just get it working in Chrome). Thanks for any help.

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• embed multiple youtube videos to chromeless player cue

  - by Quaze

  So in the project ive been working on i use the youtube API to add a video to a chromeless player (got custom buttons, everything works no problems). It loads the youtube id which it gets from the database (Codeigniter, PHP). But what i would like to see is: instead of loading 1 video, id like to add all the videos i get from the database in the cue of that one player. So only one screen, first video retrieved from dbase gets played first, when its done second get loaded preferably also looped. Is there any way i can achieve this? My first guess would be to save the array with youtube id's somewhere and on state change (when the 'video stop'-event gets fired) load the next id from the array. Havent tried this yet because id prefer if the cue gets just gets filled on the init, so it doesnt have to load after a video has been ended. Is This possible?

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• How to change the layout of the CreateUserWizard control?

  - by Bazzz

  How to change just the layout (template) of the CreateUserWizard control programmatically? I would to define another layout (not using the horrid table) but continue to use all the event handling and the creation of the user of the CreateUserWizard control. Just for reference, the following code doesn't work, and produces an unexpected result not representing my Template at all. The "InstantiateIn" method of the ITemplate is not called. public partial class b : System.Web.UI.Page { protected void Page_Init(object sender, EventArgs e) { CreateUserWizard createUserWizard = new CreateUserWizard(); createUserWizard.CreateUserStep.ContentTemplate = new Template(); Panel1.Controls.Add(createUserWizard); } } public class Template : ITemplate { void ITemplate.InstantiateIn(Control container) { container.Controls.Add(new TextBox() { ID = "UserName" }); container.Controls.Add(new TextBox() { ID = "Password" }); container.Controls.Add(new TextBox() { ID = "ConfirmPassword" }); container.Controls.Add(new TextBox() { ID = "Email" }); container.Controls.Add(new PlaceHolder() { ID = "ErrorMessage" }); } } }

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• simile exhibit ie7 bug

  - by two7s_clash

  'm using to Exhibit to, pretty simply, display some data on historical events and book publication dates: http://f1shw1ck.com/timeline3/exhibit.html Everything works fine, and I have been able to get the timeline running as wanted, until I try to take control of the timeline with a timelineConfig script. After I add this, my timeline continues to work as expected on all browsers, except for IE. Curiously enough, band 0 initializes and is rendered correctly, but band 1 shows no events and does not sync to the band above. But it is picking up the width: 10%", intervalUnit: Timeline.DateTime.DECADE, intervalPixels: 60 specifications, as they are rendered correctly. Since everything works until I call ex:configuration="timelineConfig", since everything works in the other browsers, and since everything almost works in IE, up to the event painting, I have to imagine this is a javascript coding error on my part, but I just can't see it. All I get in my console is Failed to create view View As Timeline." Incidentally, having or not having the gotoYear function seemingly does nothing to change... Thanks for any tips.

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• "No context-sensitive help installed" , "user32.dll" and "uxtheme.dll" AV errors on Delphi with no reason

  - by Javid

  This is very strange guys. I wrote a simple application. When I make my commands executed fast by moving mouse (event is on mouse move), I experience the following errors if I run my application without debugger (if I do, application just hangs and nothing happens): 1- "No context-sensitive help installed" however i haven't used help in my app. 2- Access violation errors from "uxtheme.dll" and "user32.dll" libraries! well, i think these errors happen when Windows Messages are sent quickly one after another. I came across these errors a while ago in a huge application. In both application I used SendMessage command, but what am i doing wrong? I'm now using Delphi 2010 Has anyone ever experienced this?!

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• jQuery exclude elements with certain class in selector

  - by Alex Crooks

  I want to setup a click event trigger in jQuery for certain anchor tags. I want to open certain links in a new tab while ignoring ones with a certain class (before you ask I cannot put classes on the links I am trying to catch as they come from a CMS). I want to exclude links with class "button" OR "generic_link" I have tried $(".content_box a[class!=button]").click(function (e) { e.preventDefault(); window.open($(this).attr('href')); }); But that doesn't seem to work, also how do I do an OR statement to include "generic_link" in the exclusion? Many thanks

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• Refresh a jQuery function

  - by Toro

  Is possible refresh a function every x seconds or refresh it on single event? I explain: I have a function that make pagination on my website, inside every div that are "pages" I have some pictures where I have added LightBox. Everything works nice on the first div (page) but when I change the page it doesnt' work anymore. I tried to fix in this way: $('.pagination a').click(function () { initShadow(); }); In this way it work on the pageLoad and on the first page that I change, than it stop again. So I need to fix this issue, everytime I change the "page" I would like it works fine. Is possible to refresh a function every x second or to refresh it everytime I click on the pagination buttons?

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• On Edit Grid view Multiple row edit validation

  - by franics

  I am using a telerik radgrid so there are around 5 columns each column edittemplate contains a control along with a required field validator and also a property called AllowMultiRowEdit is set to true so i am able to multiple rows in edit mode. If any of the values are cleared the for multiple rows I want only those to be validated on update of that particular row. So i implemented the Grids item data bound event find each and every validator along with the update button and set a unique validation group. The above implementation most times but fails at some time. Is there any other way of going about this ?

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• SDP media field format

  - by TacB0sS

  Hey, I would like to create a SDP media field with its attributes, and there are a few things I don't understand. I've skimmed and read the relevant RFC and I understand most of what each field means, but what I don't understand is how do I derive from the Audio/Video Format of the JMF, which parameters of the format compose the rtpmap registry entries I need to use. I see many times the fields m=audio 12548 RTP/AVP 0 8 101 a=rtpmap:0 PCMU/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20 a=sendrecv these are received from the pbx server I'm connecting to, what do they mean in the terms of the JMF audio format properties. (I do understand these are standard audio format commonly used in telecommunication) UPDATE: I was more wondering about the format parameter '0 8 101' at the end of m=audio 12548 RTP/AVP 0 8 101 Thanks in advance, Adam Zehavi.

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• Use JavaScript to Replace Classname Value

  - by user1515425

  I want to replace every occurrence of the numbers with the string: ???. Here is an example string: <em>Chelsea</em> 1-4 Atletico Madrid How can I do this in JavaScript? <a href="https://www.google.com/url?sa=t&amp;source=web&amp;cd=9&amp;cad=rja&amp;ved=0CFEQtwIwCA&amp;url=http%3A%2F%2Fwww.whoateallthepies.tv%2Fchelsea%2F137070%2Fsuper-cup-chelsea-1-4-atletico-madrid-falcao-on-fire-as-blues-flop-in-monaco-photos-highlights.html&amp;rct=j&amp;q=chelsea&amp;ei=1odBUImpBIWA0AWM1oC4BA&amp;usg=AFQjCNEwdCCckt15XTkHSAf2fsUnGk9IJg&amp;sig2=IOrD6hfMrviW9ods0DG2dw" class="l" onmousedown="return rwt(this,'','0','','9','AFQjCNEwdCCckt15XTkHSAf2fsUnGk9IJg','IOrD6hfMrviW9ods0DG2dw','0CFEQtwIwCA',null,event)" title="Super Cup: Chelsea 1-4 Atletico Madrid – Falcao On Fire As Blues Flop In Monaco (Photos ...">Super Cup: <em>Chelsea</em> 1-4 Atletico Madrid – Falcao On <b>...</b></a> Thanks in advance.

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• Slow page unload in IE

  - by ForYourOwnGood

  I am developing a site which creates many table rows dynamically. The total amount of rows right now is 187. Everything works fine when creating the rows, but in IE when I leave the page, there is a large amount of lag. I do not know if this is some how related to the heavy DOM manipulation I am doing in the page? I do not create any function closures when building the dynamic content's event handlers so I do not believe this problem is related to memory leaks. Any insight is much appreciated.

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