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Articles indexed Wednesday April 21 2010

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  • How to get NSFormatter subclass to work with NSTableColumn sort key and selector?

    - by Andrew
    My setup: I have a sqlite database from which I populate a NSMutableArray of NSDictionary objects this is the DataSource for my NSTableView. One of the columns holds "time", the time is a float that holds seconds. I would like to display the values in this column as minutes:seconds. For instance my data would be 123.4329387 I want to display 2:03 which I have no problem doing with a subclass of NSFormatter (or NSNumberFormatter) applied to my NSTextField in the column. I have sorting set up by using the Table Column Attributes in IB, I just have the sort key set to "time" and the selector set to "compare:" which works fine without the formatter. Currently this gives me something like this when I sort (descending) 1:37, 1:31, 0:10, 0:10, 0:09, 1:30, 1:30, 1:26, 0:09 and similar nonsense, it looks like something is going on but it's definitely not sorted. How do I get the sort to look at the underlying data instead of the formatted value? Alternately, how do I specify a custom sort method and where do I put the code for said method? I have searched around quite a bit and have not found anything to help me out with this problem, any help with this is most appreciated.

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  • How to rollback in EF4?

    - by Jaxidian
    In my research about rolling back transactions in EF4, it seems everybody refers to this blog post or offers a similar explanation. In my scenario, I'm wanting to do this in a unit testing scenario where I want to rollback practically everything I do within my unit testing context to keep from updating the data in the database (yeah, we'll increment counters but that's okay). In order to do this, is it best to follow the following plan? Am I missing some concept or anything else major with this (aside from my SetupMyTest and PerformMyTest functions won't really exist that way)? using (var ts = new TransactionScope()) { // Arrange SetupMyTest(context); // Act PerformMyTest(context); var numberOfChanges = context.SaveChanges(false); // if there's an issue, chances are that an exception has been thrown by now. // Assert Assert.IsTrue(numberOfChanges > 0, "Failed to _____"); // transaction will rollback because we do not ever call Complete on it }

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  • Approximate timings for various operations on a "typical desktop PC" anno 2010

    - by knorv
    In the article "Teach Yourself Programming in Ten Years" Peter Norvig (Director of Research, Google) gives the following approximate timings for various operations on a typical 1GHz PC back in 2001: execute single instruction = 1 nanosec = (1/1,000,000,000) sec fetch word from L1 cache memory = 2 nanosec fetch word from main memory = 10 nanosec fetch word from consecutive disk location = 200 nanosec fetch word from new disk location (seek) = 8,000,000 nanosec = 8 millisec What would the corresponding timings be for your definition of a typical PC desktop anno 2010?

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  • Why does deploying a .NET Compact Framework assembly cause .NET Desktop Framework assemblies to be d

    - by Matthew Belk
    I am trying to get one of my developers set up to work on a fairly large .NETCF project. When we try to simply deploy the solution and all of its projects to a target device, deploying one of the projects triggers several assemblies from the desktop framework to be copied from the GAC to the device. What on earth could cause this? The assemblies from the "big" framework are ones like System.DirectoryServices, System.Design, and a bunch of others.

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  • Does Extreme Programming Need Diagramming Tools?

    - by Ygam
    I have been experimenting with some concepts from XP, like the following: Pair Programming Test First Programming Incremental Deliveries Ruthless Refactoring So far so good until I had a major stump: How do I design my test cases when there aren't any code yet? From what basis do I have to design them? From simple assumptions? From the initial requirements? Or is this where UML diagrams and the "analysis phase" fits in? Just had to ask because in some XP books I've read, there was little to no discussion of any diagramming tool (there was one which suggested I come up with pseudocodes and some sort of a flowchart...but it did not help me in writing my tests)

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  • SQL Server 2008 R2 Hits RTM, Release in May

    Microsoft today announced that SQL Server 2008 R2 has achieved release-to-manufacturing status and will be released in May worldwide....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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  • Microsoft confirme la sortie mondiale de SQL Server 2008 R2 début mai, et annonce sa mise en product

    Mise à jour du 29.03.2010 par Katleen Microsoft dévoile les prochaines dates de sortie de SQL Server, version 2005 (SP4) et 2008 (SP2) L'équipe travaillant sur SQL Serveur vient de publier un billet assez succinct sur son blog, à propos des prochains services packs à sortir. Ces road maps indiquent uniquement les dates de sortie, et pas encore les contenus. SQL Server 2005 (SP4) sera disponible au cours du dernier trimestre 2010, il s'agira du dernier service pack pour cette version. SQL Server 2008 (SP2) devrait sortir lors du troisième trimestre 2010 Plus d'informations à venir sur ces deux sorties bientôt, notamment à propos de leurs contenus. A...

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  • Javascript Document.bgColor does not work

    - by Icarus
    Hi, In the below code, I get the two dialog boxes, but the bgColor of the page is never changed. Is there any standard that font / color changes are not honored in JavaScript ? <html> <head> </head> <body bgColor="GRAY"> <script type="text/javascript"> document.write("This message is written by JavaScript"); alert('Am here'); alert('Am here again'); document.bgcolor="WHITE"; </script> </body> </html>

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  • Problem with character encoding on email sent via PHP?

    - by cosgrove
    Hi everybody, Having some trouble sending properly formatted HTML e-mail from a PHP script. I am running PHP 5.3.0 and Apache 2.2.11 on Windows XP Professional. The output looks like this: Agent Summary for Support on Tuesday April 20 2010=20 Ext. Name Time Volume 137 Agent Name 01:27:25 1 138 =09 00:00:00 0 139 =09 00:00:00 0 You see the =20 and =09 in there? If you look at the HTML you also see = signs being turned into =3D. I figure this is a character encoding issue as I read the following at Wikipedia: ISO-8859-1 and Windows-1252 confusion It is very common to mislabel text data with the charset label ISO-8859-1, even though the data is really Windows-1252 encoded. In Windows-1252, codes between 0x80 and 0x9F are used for letters and punctuation, whereas they are control codes in ISO-8859-1. Many web browsers and e-mail clients will interpret ISO-8859-1 control codes as Windows-1252 characters in order to accommodate such mislabeling but it is not standard behaviour and care should be taken to avoid generating these characters in ISO-8859-1 labeled content. This looks like the problem but I don't know how to fix. My code looks like this: ob_start(); report_queue_summary($yesterday,$yesterday,$first_extension,$last_extension,$queue); $body_report = ob_get_contents(); ob_end_clean(); $body_footer = "This is an automatically generated e-mail."; $message = new Mail_mime(); $html = $body_header.$body_report.$body_footer; $message->setHTMLBody($html); $body = $message->get(); $extraheaders = array("From"=>"***redacted***","To"=>$recipient, "Subject"=>"Agent Summary for $yesterday [$queue]", "Content-type"=>"text/html; charset=iso-8859-1"); $headers = $message->headers($extraheaders); # setup e-mail; $host = "*********"; $port = "26"; $username = "*****"; $password = "*****"; # Send e-mail $smtp = Mail::factory('smtp', array ('host' => $host, 'port' => $port, 'auth' => true, 'username' => $username, 'password' => $password)); $mail = $smtp->send($recipient, $extraheaders, $body); if (PEAR::isError($mail)) { echo("" . $mail->getMessage() . ""); } else { echo("Message successfully sent!"); } Is the problem that I'm using output buffering?

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  • C# - null vs "Could not evaluate expression"

    - by Vaccano
    I have code like this: private Box mCurBox; public Box CurBox { get { return mCurBox; } set { if (mCurBox != value) { mCurBox = value; } } } When mCurBox is null then CurBox the debugger says "Could not be evaluated". If it knows that the value underneath is null then how come it can't figure it out?

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  • Is there a way to create a SyndicationFeed from a String?

    - by Roberto Bonini
    Hi, I'm trying to recreate a SyndicationFeed object (System.ServiceModel.Syndication) from XML data that has been stored locally. If I were working with XMLDocument, this would be easy.I'd call LoadXml(string). The SyndicationFeed will only load from an XMLReader. The XMLReader will only take a Stream or another XMLReader or a TextReader. Since XMLDocument will load a string, I've tried to do this as follows (in the form of a Extension Method): public static SyndicationFeed ToSyndicationFeed(this XmlDocument document) { Stream thestream = Stream.Null; XmlWriter thewriter = XmlWriter.Create(thestream); document.WriteTo(thewriter); thewriter.Flush(); XmlReader thereader = XmlReader.Create(thestream); SyndicationFeed thefeed = SyndicationFeed.Load(thereader); return thefeed; } I can't get this to work. The Stream is always empty even though the XMLDocument is populated with the Feed to be loaded into the SyndicationFeed. Any help or pointers you can give would be most helpful. Thanks, Roberto

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  • Using a Time Zone Conversion When Dynamically Generating Results

    - by John
    Hello, If I understand correctly, the code below converts $row["datesubmitted"] from one timezone to another. I would like to print the converted $row["datesubmitted"] dynamically in an HTML table. Is there a way that I can apply the conversion below for each row that is pulled from MySQL? I assume that I can't just plug $row["dt"] into the code since there is no field called "dt" in the MySQL that I am using. Thanks in advance, John $dt = new DateTime($row["datesubmitted"], $tzFrom); $dt->setTimezone($tzTo);

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  • Validating call to web service against schema before sending request

    - by Cen
    I am calling a web service (written in Java) in my web app. I use the WSDL to generate proxy classes using the wsdl.exe command line tool. Everything is working fine. However, I have found out that the web service is not doing any data validation at all when they receive a request from my app. Hence, if I happen to send one minute piece of data that isn't exactly what they want, I receive a general fault error in return, with no specifics at all of what the incorrect (if any) piece of data is. So, before I make the request, I'd like to validate my request against the schema they have provided. Is this possible, and if so, how do I go about this? Thanks in advance

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  • How to access the stage from an AS3 class in Adobe Flash

    - by Graphithy
    The problem I've encountered is that I am using a keyboardEventListener to make a movieclip run around. As I'm a college student, I'm creating this for an assignment but we are forced to use as3 classes. When I run the code in the maintimeline, there is no problem. But when I try to access it from another class (with an 'Export for ActionScript' on the movieclip in question) I get an error he can't address the stage. this.stage.addEventListener(KeyboardEvent.KEY_DOWN, dostuff);

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  • How do I tile and overlay images in WPF?

    - by imnlfn
    I'm very new to WPF and trying to port an application from VB6 to C# and XAML. What I need to do now is create one big image out of a number of small ones, arranged like a series of "tiles." Some of these smaller ones will have overlays superimposed on them. In VB6, accomplishing both the tiling and overlaying would simply be a matter of using the PaintPicture method with the PictureBox control. This is my attempt at the tiling and overlaying in one step (though really the overlaying could occur beforehand): ImageDrawing Drawing1 = new ImageDrawing(new BitmapImage(new Uri(@"c:\one.bmp", UriKind.Absolute)), new Rect(0, 0, 40, 130)); ImageDrawing Drawing2 = new ImageDrawing(new BitmapImage(new Uri(@"c:\two.bmp", UriKind.Absolute)), new Rect(40, 0, 45, 130)); ImageDrawing Drawing3 = new ImageDrawing(new BitmapImage(new Uri(@"c:\overlay.bmp", UriKind.Absolute)), new Rect(40, 0, 45, 130)); DrawingGroup myDrawingGroup = new DrawingGroup(); myDrawingGroup.Children.Add(Drawing1); myDrawingGroup.Children.Add(Drawing2); myDrawingGroup.Children.Add(Drawing3); myImage.Source = new DrawingImage(myDrawingGroup); The tiling works fine, but the overlay is a no-go. I was wondering if someone could point me towards a means of accomplishing the overlays and someone could indicate whether this is the best way to do the tiling. Thanks!!

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  • Change webserver used by Flex in FlexBuilder to .NET Framework 3.5

    - by Simon_Weaver
    I just had to reformat and reinstall Flex and reconstruct a project. The problem is i am using ASP.NET as my server side technology and using LINQ in my files. The version of WebDev.Webserver.exe that FlexBuilder starts up is the wrong version so I get this error : Compiler Error Message: CS0234: The type or namespace name 'Linq' does not exist in the namespace 'System' (are you missing an assembly reference?) Microsoft (R) Visual C# 2005 Compiler version 8.00.50727.3053 for Microsoft (R) Windows (R) 2005 Framework version 2.0.50727 Copyright (C) Microsoft Corporation 2001-2005. All rights reserved. I know that changing to the latest version of ASP.NET / Framework will fix this - but I just can't figure out HOW to make that change in Flexbuilder. I cant even remember if i ever successfully did it before or if I just created a virtual directory in IIS7. Where would I change the version?

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  • How to Place DialogBar or Dialog box into pane in vc 2008 or vc 2010 Beta

    - by gbalajimecse
    Hi now i am working in 2003 vc++ and i am converting(migrating) my project in to vc 2008 or new vc 2010 Beta,i saw the feature pack of 2008,2010 regards CDockable Pane(Auto Hode,floating),so i require this features ,i want to place a dialogbox or dialog bar into pane(CDockable Pane class), so i done this in my following code Myframe Code snippet is : if (!m_MyPane.Create(L"MyPane", this, CRect(0,0,0,0), true, IDD_DIALOG1, WS_CHILD|WS_VISIBLE)) return -1; AddDockSite(); EnableDocking(CBRS_ALIGN_ANY); EnableAutoHidePanes(CBRS_ALIGN_ANY); m_MyPane.EnableDocking(CBRS_ALIGN_ANY); DockPane(&m_MyPane, AFX_IDW_DOCKBAR_RIGHT); MyPane class Definition is : include "stdafx.h" include "Pane.h" include "Resource.h" include "MainFrm.h" include "soft1.h" ifdef _DEBUG undef THIS_FILE static char THIS_FILE[]=FILE; define new DEBUG_NEW endif CPane1::CPane1() { } CPane1::~CPane1() { } BEGIN_MESSAGE_MAP(CPane1, CDockablePane) ON_WM_CREATE() ON_WM_SIZE() END_MESSAGE_MAP() int CPane1::OnCreate(LPCREATESTRUCT lpCreateStruct) { if (CDockablePane::OnCreate(lpCreateStruct) == -1) return -1; return 0; } void CPane1::OnSize(UINT nType, int cx, int cy) { CDockablePane::OnSize(nType, cx, cy); } when i build it wont shows any error and executed without error in the output the frame show the mypane but mypane didn't show IDD_DIALOG1 So is it anything am i missed please rectify my code and how to place a IDD_DIALOG1 dialogbox in to mypane PLEASE HELP ME REGARDS G.BALAJI

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  • ASP.Net partially ignoring my Custom error section in web.config

    - by weevie
    Here's my web.config customErrors section (you'll notice I've switched the mode to 'On' so I can see the redirect on my localhost): <customErrors defaultRedirect="~/Application/ServerError.aspx" mode="On" redirectMode="ResponseRewrite"> <error statusCode="403" redirect="~/Secure/AccessDenied.aspx" /> </customErrors> and here's the code that throws: Catch adEx As AccessDeniedException Throw New HttpException(DirectCast(HttpStatusCode.Forbidden, Integer), adEx.Message) End Try and here's what I end up with: Which is not my pretty AccessDenied.aspx page but it is a forbidden error page so at least I know my throw is working. I've removed the entry for 403 in IIS (7.0) as a desperate last attempt and unsuprisingly that made no difference. I've run out of ideas now so any suggestions will be gratefully appreciated!

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  • Best practices for using Amazon SQS - Polling the queue

    - by alex
    I'm designing a service for sending out emails for our eCommerce site (order confirmations, alerts etc...) The plan is to have a "SendEmail" method, that generates a chunk of XML representing the email to be sent, and sticks it on an Amazon SQS queue. My web app(s) and other applications will use this to "send" emails. I then require a way of checking the queue, and physically sending out the email messages. (I know how I'm going to be dispatching emails) I'm curious as to what the best way to "poll" the queue would be? Should I create a windows service, and use something like Quartz.net to schedule it to check the queue every x number of minutes for example? Is there a better way of doing this?

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  • How to use Console with a Winform App ?

    - by asksuperuser
    Let's say I have some code inside a Winform. I'd also like to output to Console like this: Reader = command.ExecuteReader(); while (Reader.Read()) { string thisrow = ""; for (int i = 0; i < Reader.FieldCount; i++) thisrow += Reader.GetValue(i).ToString() + ","; Console.WriteLine(thisrow); } connection.Close(); It doesn't crash but I can't see any console. Why ?

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  • Unix: replace every odd | with \left| and every even | with \right|

    - by HH
    An enormous equation. You need to add \left| on the left side of corresponding |. The corresponding | you need to replace with \right|. Equation \begin{equation} | \Delta w_{0} | = \frac{|w_{0}|}{2} \left( |\frac{\Delta g}{g}|+|\frac{\Delta (\Delta r)}{\Delta r}| + |\frac{\Delta r}{r}| +|\frac{\Delta L}{L}| \right) \end{equation}

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