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Articles indexed Friday June 18 2010

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  • How do you add a row to a databound datagridview using the datagridview in the gui?

    - by IsaacB
    Hi guys, I've bound a datagridview to a collection of objects. It's giving me a null reference exception when I try to add a new row to a collection (empty or otherwise) using the gui. More specifically, when there is a write event it does this. How can I override the behavior of the write event and manually add all of the columns contents to the object collection? I could disable the add new row feature and make an add button, but the built in datagridview row add looks so much more slick.

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  • match strings in python

    - by mesun
    Write a function, called constrainedMatchPair which takes three arguments: a tuple representing starting points for the first substring, a tuple representing starting points for the second substring, and the length of the first substring. The function should return a tuple of all members (call it n) of the first tuple for which there is an element in the second tuple (call it k) such that n+m+1 = k, where m is the length of the first substring. Complete the definition def constrainedMatchPair(firstMatch,secondMatch,length):

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  • Where to place a debug log files for my daemon app?

    - by sasayins
    Hi, I am using C language and Linux as my programming platform. I am learning how to create a daemon, and I want to create a log file so that I write a debug message in my daemon. My question is where should I put the log file in my system. Should I put it in the var folder? Please advice. Many thanks.

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  • JAX-WS Consuming web service with WS-Security and WS-Addressing

    - by aurealus
    I'm trying to develop a standalone Java web service client with JAX-WS (Metro) that uses WS-Security with Username Token Authentication (Password digest, nonces and timestamp) and timestamp verification along with WS-Addressing over SSL. The WSDL I have to work with does not define any security policy information. I have been unable to figure out exactly how to add this header information (the correct way to do so) when the WSDL does not contain this information. Most examples I have found using Metro revolve around using Netbeans to automatically generate this from the WSDL which does not help me at all. I have looked into WSIT, XWSS, etc. without much clarity or direction. JBoss WS Metro looked promising not much luck yet there either. Anyone have experience doing this or have suggestions on how to accomplish this task? Even pointing me in the right direction would be helpful. I am not restricted to a specific technology other than it must be Java based.

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  • Error creating new user by Admin

    - by rahul
    I am creating a web application using Form Authentication of Asp.Net with C# and back end Sql Server. Here in my application administrator login and creates new users. I am using the create user wizard under login controls. My problem is when the new user is created by Admin he is automatically logged out and logged in with new user credentials which he has just created. Any help would be highly appreciated.

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  • Why Rails.cache is not thread safe?

    - by Freewind
    I know Rails.cache is ActiveSupport::Cache::MemoryStore, and it is not thread safe. I don't understand, why rails use a thread-unsafe cache as its default? Why not use ActiveSupport::Cache::SynchronizedMemoryStore? In my opinion, in a web site, if a cache is not thread-safe, it almost useless, because the requests are not handled in ONE thread. Do you use Rails.cache in you webapp? And how do you use it?

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  • Pros / Cons displaying list of users at login page

    - by Radu094
    We seem to have a lot of clients asking us to change the login screen in this manner: Display a list of all available users (thumbnail picture + name) User selects a username from the list A password prompt appears near the username User enters password then presses enter This sounds remarcably similar to the Windows XP login, which is probably where they got the ideea in the first place. There are only about 4 - 5 different users that can login at any given station, so implementing that list on one screen is feasable. So I was wondering if there are any usability experts with some word on this method of login. As far as I can tell, MS droped this behaviour in Vista/Win7, didn't they?

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  • Problem with building with csc task in Ant

    - by Wing C. Chen
    I have an ant build target using csc: <target name="compile"> <echo>Starting compiling ServiceLauncher</echo> <csc optimize="true" debug="true" warnLevel="1" unsafe="false" targetType="exe" failonerror="true" incremental="false" mainClass = "ServiceLauncher.Launcher" srcdir="ServiceLauncher/Launcher/" outputfile="ServiceLauncher.exe" > <reference file="libs/log4net.dll"/> <define name="RELEASE"/> </csc> </target> When I run it, the following exception comes up: csc failed: java.io.IOException: Cannot run program "csc": CreateProcess error=2, The system cannot find the file specified However, it runs without the exception but never correctly builds the .exe file, when I manually add in an empty ServiceLauncher.exe. How can I correctly build this .Net project "ServiceLauncher"?

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  • Twitter like status message using jquery...

    - by Pandiya Chendur
    I am using this jquery javascript function to show status message, function topBar(message) { $("<div />", { 'class': 'topbar', text: message }).hide().prependTo("body") .slideDown('fast').delay(4000).slideUp(function() { $(this).remove(); }); } and my css: .topbar { background: #476275; border-bottom: solid 2px #EEE; padding: 3px 0; text-align: center; color: white; font-family:Arial,Helvetica,sans-serif; font-size:135%; font-weight:bold; }? I am getting my status message but what it does it inserts a div within the body tag instead i want the message to display out of the body(z index) exactly like twitter (ie) just flow my message from top and hide it... Any suggestion.... Hope you got my question..

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  • Shopping Cart in Flex 4

    - by chchrist
    I am trying to code a shopping cart using Flex 4. I am at the design process and I need to figure out which design pattern to use. I am thinking of using the Singleton pattern. I will have a Product Value Object where I'll save each product's values and the I'll push each product to an array variable in my Singleton class. Is my logic OK? Is there a better way? Thanks in advance

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  • Inability to detect the Output from inside a SSIS script component

    - by Danaja
    In the script of the script components the Output buffer is not being detected as an existing component. I am trying to use the following piece of code Output0Buffer.AddRow(); within the public override void Input0_ProcessInputRow(Input0Buffer Row) method. I know it should be available within this method because at the moment I am copying and using a component from a previous project that has this code and it works. but when I create a new component and put the same code in it doesn't Can any one explain why this is happening?

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  • Which Oracle table uses a sequence?

    - by Jaú
    Having a sequence, I need to find out which table.column gets its values. As far as I know, Oracle doesn't keep track of this relationship. So, looking up for the sequence in source code would be the only way. Is that right? Anyone knows of some way to find out this sequence-table relationship?

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  • mod_rewrite: no access to real files and directories

    - by tshabalala
    Hello. I use mod_rewrite/.htaccess for pretty URLs. I forward all the requests to my index.php, like this: RewriteRule ^/?([a-zA-Z0-9/-]+)/?$ /index.php [NC,L] The index.php then handles the requests. I'm also using this condition/rule to eliminate trailing slashes (or rather rewrite them to the URL without a trailing slash, with a 301 redirect; I'm doing this to avoid duplicate content and because I like no trailing slashes better): RewriteCond %{HTTP_HOST} !^\.localhost$ [NC] RewriteRule ^(.+)/$ http://%{HTTP_HOST}/$1 [R=301,L] This works well, except that I now get an infinite loop when trying to access a (real) directory (the rewrite rule removes the trailing slash, the server adds it again, ...). I solved this by setting the DirectorySlash directive to Off: DirectorySlash Off I don't know how good this solution is, I don't feel too confident about it tbh. Anyway, what I'd like to do is completely ignore "real" files and directories, since I don't need them and I only use pretty URLs with "virtual" files/directories anyway. This would allow me to avoid the DirectorySlash workaround/hack too. Is this possible? Thanks!

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  • Windows (7 & Vista) laptop monitor does not come back after closing lid

    - by Scott Vercuski
    I'm experiencing an issue with Windows Vista (and now Windows 7) with my laptop. When I close the laptop lid the monitor goes blank but will not come back on after I re-open the laptop. The screen stays blank and nothing that I do will get it to come back. The laptop is an HP DV9000 series. Has anyone else ran into this issue? One of the solutions I've seen online is to go into the device manager and replace the lid driver with something nonsensical (the website suggested pointing the driver at the sound recorder). This does solve the problem by disabling the lid but doesn't really resolve the root issue. I'm asking if anyone has any method I can use to debug what's going on. How do I tell if it is an operating system issue vs. a malfunction within the lid itself. I'd actually like the lid to function as it's meant to. Thank you!

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  • How do I prevent a curve snapping to a straight line in Flash CS4?

    - by Kelix
    I am trying to do some vector drawing in Flash but am having trouble when "curving" lines. At the moment, unless the curve is significant, it snaps back to a straight line meaning I am finding it impossible to draw shallow curves. Any idea how to turn this snapping off? I have tried turning everything off in View Snapping and it makes no difference.

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  • Nouveau forum d'entraide Qualimétrie : posez vos questions sur les pratiques d'analyse de code et d'

    Bonjour, Le forum Qualimétrie se destine à toutes vos questions concernant les pratiques et outils touchant à la qualité du code et de l'architecture du logiciel. Il se destine également à accueillir vos questions sur l'intégration et l'utilisation (ex. Plugin Maven) des outils de qualimétrie dans les outils de build. N'hésitez pas, avant de poser votre question, à consulter la documentation de l'outil concerné, ainsi que les ressources à votre disposition. Pour toute contribution sur le sujet, vous pouvez contacter l'équipe bénévole par mail via conception [at] redaction [dash] developpez [dot] com...

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  • UISearchBar in a UITableView

    - by petert
    I'm trying to mimic the behaviour of a table view like one in the iPod app for Artists - it's a sectioned table view with a section index on the right and with a search bar at the top, but initially hidden when view shown. I am using sdk 3.1.2 and IB, so simply dragged a UISearchDisplayController in to my NIB - it does wire everything up ready for searching. The problem starts because I'm adding the UISearchBar in to the first section of the UITableView, because if I understand correctly I must do this so I can jump to the search bar by touching the search icon in the section index directly? When the table view appears I see the search bar but it has resized and I now have a white block behind the section index at the top. It does'nt take the color of the UISearchBar's surround which interestingly is different to that shown in Interface Builder. Searching around, I did find a tip to add a small navigation bar and a UISearchBar in a UIView, then add this to the table view cell - this works.. BUT the color of the navigation bar's background is what you'd expect normally (gray), not the different color as noted above?! More interesting, if I click the search bar to start a search, then click Cancel, all is fixed!!! The background along the whole tableview cell when the search bar is, is the same!!?! Thanks for any tips.

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  • A problem happened during install the ruby

    - by Alex
    I’m a freshman on Ruby and now trying to install ruby on my machine according to the Tutorial on http://wiki.openqa.org/display/WTR/Tutorial However, after I installed the ruby186-26, and run the command “gem update --system”, the following error occurred: C:\Documents and Settings\e482090\Desktopgem update --system c:/ruby/lib/ruby/site_ruby/1.8/rubygems/config_file.rb:51:in initialize': Inval id argument - <Not Set>/.gemrc (Errno::EINVAL) from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/config_file.rb:51:inopen' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/config_file.rb:51:in initi alize' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:36:innew' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:36:in do_con figuration' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:25:inrun' from c:/ruby/bin/gem:23 C:\Documents and Settings\e482090\Desktopgem install watir c:/ruby/lib/ruby/site_ruby/1.8/rubygems/config_file.rb:51:in initialize': Inval id argument - <Not Set>/.gemrc (Errno::EINVAL) from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/config_file.rb:51:inopen' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/config_file.rb:51:in initi alize' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:36:innew' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:36:in do_con figuration' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:25:inrun' from c:/ruby/bin/gem:23 Meanwhile, we have tried this on other machines and the result turned out ok. Thus, my question is why the error happened on my pc? Have you met this kind of error before?

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  • Can't build full html table in QTextEdit with std::for_each...

    - by mosg
    Hi. Here is my code function: void ReportHistory::update(void) { ui.output->clear(); ui.output->setCurrentFont(QFont("Arial", 8, QFont::Normal)); QString title = "My Title"; QStringList headers = QString("Header1,Header2,Header3,Header4,Header5,Header6").split(","); QString html = QString( "<html>" \ "<head>" \ "<meta Content=\"Text/html; charset=Windows-1251\">" \ "<title>%1</title>" \ "</head>" \ "<body bgcolor=#ffffff link=#5000A0>" \ "<p>%1</p>" \ "<table border=1 cellspacing=0 cellpadding=2>" \ "<tr bgcolor=#f0f0f0>" ).arg(title); foreach (QString header, headers) { html.append(QString("<th>%1</th>").arg(header)); } html.append("</tr>"); struct Fill { QString html_; Analytics::NavHistory::History::value_type prev_; Fill(QString html) : html_(html) {} void operator ()(const Analytics::NavHistory::History::value_type& entry) { QStringList line = (QString( "%1|%2|%3|%4|%5|%6" ).arg(value1, 15) .arg(value2 ? ' ' : 'C', 8) .arg(value3, 15) .arg(value4, 15, 'f', 4) .arg(value5, 15) .arg(value6, 15, 'f', 4)).split("|"); html_.append("<tr>"); foreach (QString item, line) { html_.append("<td bkcolor=0>%1</td>").arg(item); } html_.append("</tr>"); prev_ = entry; } }; std::for_each(history_->data().begin(), history_->data().end(), Fill(html)); html.append( "</table>" \ "</body>" \ "</html>"); ui.output->setHtml(html); } Where: ui.output is a pointer to QTextEdit. Question: the ui.output just show me the headers, and not the full table, what is wrong? Thanks.

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