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  • Fix: jqGrid search operator menu items jumping around on hover

    A colleague noticed earlier on today, that on the Chrome browser they were using, the search operator menu items of a jqGrid on a web app’s UI were jumping around on hover, making it practically impossible to select one.    Seems this had started occurring on that ASP.net MVC web application, after a recent update […]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Νοεμβρίου 6, 2018
  • HowTo: change color of validation messages in ASP.net MVC

    If you need to customize the colors (or do more restyling) of validation messages in ASP.net MVC, the following snippet from a discussion on ASP.net forums should be useful: Add to Content/Site.css: /* styles for validation helpers */ .field-validation-error {     color: #b94a48; } .field-validation-valid {     ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Νοεμβρίου 2, 2018
  • OpenStreetMaps as an alternative to Google Maps in Joomla!

    If you use Joomla! (CMS / Content Management System), you could switch to the free OpenStreetMaps instead of the recently-turned-much-more-expensive Google Maps, thanks to the OSModul extension for Joomla!: https://extensions.joomla.org/profile/extension/maps-a-weather/maps-a-locations/osmodul/ At the bottom of this page there is an example that ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Οκτωβρίου 26, 2018
  • HowTo: Fix DVD/CD with Live filesystem (Packet/UDF) on Windows

    The other day I found how easy it is to use a Live CD/DVD (where packet writing occurs when adding stuff) instead of a Mastered one (where all is kept to be written when you close the disk) on Windows. It feels more like using a USB flash disk and should be more safe regarding […]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Οκτωβρίου 10, 2018
  • HowTo: include MVC model property Display name in Required validation message

    Just came across this validation error display in an MVC app I’ve recently started maintaining. The required input field validation seemed to not be localized, resulting in a mixed English and Greek (from the field’s Display name) message: Looking at the MVC model I noticed they were using [Required] attributes for the userName and password ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Οκτωβρίου 4, 2018
  • Fix: jQuery’s jqGrid search UI custom styling

    Lately, I’ve got the task of maintaining/extending an ASP.net MVC web application that is using jQuery’s jqGrid for data grids on its UI. First thing I noticed was how confusing the search UI on the grid’s header was: Those symbols on the left-side of each column’s searchbox are for the type of search (e.g. contains, […]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Οκτωβρίου 3, 2018
  • Getting resulting SQL string from parametric ADO.net SqlCommand

    Microsoft is suggesting to always use Named parameters with SqlCommands for security reasons (to avoid SQL injection exploits), but they haven’t thought of providing a property at SqlCommand to give you back the result SQL so that you can have your app log it without resorting to SQL Server for that logging. Found a solution […]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Σεπτεμβρίου 19, 2018
  • Gotcha: VBScript DropHandler doesn’t support Unicode filenames

    It seems VBScript (.vbs) script file’s DropHandler on Windows is broken regarding Unicode filenames, as described at https://stackoverflow.com/a/4366906/903783 A workaround suggested by user DG there (https://stackoverflow.com/a/13587850/903783) was to use a batch file to accept the dropped file, then pass the filename(s) to the VBScript script ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Σεπτεμβρίου 9, 2018
  • Gotcha: use parentheses around ternary op conditional expressions

    Just came across the following case in C# that puzzled me momentarily, especially since the strings involved were long enough and the expression was broken on multiple lines: bool flag = true; string test1 = flag? "xa" : "xb"; string test2 = "x" + (flag? "a" : "b"); string test3 = "x" + flag? ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Αυγούστου 25, 2018
  • Fix: Temporary or Local roaming profile message after Windows login

      Researching how to solve a “You have been logged on with a temporary profile” message on a system set up to use a roaming profile (and after I had first checked/fixed the filesystem for errors which is the classic cause for that when using local profiles) I came across this article: ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Αυγούστου 18, 2018
  • Fix: Windows 10 laptops with AMD graphics adapter going really slow

    Quoting my comment from a discussion thread on the AMD Community website Actually the drivers back from 2015 that Microsoft serves for AMD laptop graphics adapters seem to make Windows 10 crawl (at everything, not just in graphics stuff). Installing the newest ones from AMD (in this case the beta driver) makes laptops work decently […]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Ιουνίου 27, 2018
  • Καταχρηστικές πρακτικές από Δημοτικές Επιχειρήσεις Ύδρευσης / Αποχέτευσης

    Θαυμάστε παρακάτω ένα έγγραφο (από ΔΕΥΑ Αγρινίου, έτους 2015) που δείχνει το αίσχος με πολλές επιχειρήσεις ύδρευσης / αποχέτευσης που καταχρηστικά ορίζουν ως τριτεγγυητή για χρέη του ενοικιαστή προς αυτές τον ιδιοκτήτη ενός ακινήτου. Αναφέρει: Δηλώνω δε με την παρούσα, ότι είμαι υπεύθυνος εξ’ ολοκλήρου για την εξόφληση των λογαριασμών, σε ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Ιουνίου 12, 2018
  • Twitter #bot or not? Posing as Automation/AI specialist & Python guru

    I just came across this strange thing on twitter: Received a notification that some “Virginia A. Osborn” liked a tweet of mine that was a) in Greek b) totally of a subset of Greek residents interest, highly unlikely it would have meant anything to a person with a foreign name. Then I saw that twitter […]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Ιουνίου 5, 2018
  • HowTo: Download and install Windows Live Movie Maker

    Unfortunately, Microsoft seems to have gone to extra lenghts to make the Windows Live suite of software go away, without anyone thinking that there were people who were using them and without offering file/project-level compatible replacements for user-friendly tools like Windows Live Movie Maker. Only Windows Live Writer was at some point ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Μαρτίου 28, 2018
  • HowTo: Install Skype desktop on Windows 10 (for older webcams)

    On Windows 10, Microsoft (they’ve acquired Skype some years ago) provide a Windows Store app for Skype, however Universal Windows Platform (UWP) apps like that one don’t support older webcams (even the ones embedded in not-that-old laptops). Unfortunately, Microsoft hasn’t bothered to provide some frame grabber driver to bridge with ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Μαρτίου 22, 2018
  • Workarround: IE11 changing download file extension to .zip

    At ClipFlair Gallery, apart from opening a ClipFlair activity in ClipFlair Studio, downloading of an activity (.clipflair) file is also supported. However, because the component serialization file format of ClipFlair Studio is XML plus media assets packed in .zip archive (with nesting allowed, where components and whole activities can be placed in ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Φεβρουαρίου 21, 2018
  • HowTo: Show block on anchor hover and click to keep open with CSS

    I was looking for a way to show a hidden HTML element with just CSS (no Javascript) when mouse hovers over an anchor (say over a “more…” note), while at the same time also supporting touch-only (no mouse) clients, where clicking should show (and keep open) that same element. I ended up combining solutions and […]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Νοεμβρίου 25, 2017
  • Fix: Windows Update 0x8e5e03fa, 0x800703fa errors

    Sometime ago, I was receiving errors 0x8e5e03fa and 0x800703fa on several pending updates at Windows 10’s Update pane (found at Settings / Updates & Security / Windows Update from the Start menu). The updates history wasn’t showing many more details, but could see Knowldege Base article numbers (KBxx) for some pending cummulative updates. ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Νοεμβρίου 20, 2017
  • HowTo: open older Pi SD card via USB multi-reader on Raspberry Pi

    After doing sudo apt-get update sudo apt-get upgrade on an older Raspbian installation (at a 4GB SD Card), some corruption occured (probably due to lack of space, since I see newer NOOBS asks for an 8GB SD Card), making it unbootable. Would only show the NOOBS splash screen, but couldn’t boot into Raspbian. I just […]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Νοεμβρίου 18, 2017
  • Fix: WordPress administration UI content area showing up blank

    Some time ago, at a WordPress 3.3 blog, a friend was getting a blank main area at the administration UI (just the menu was showing up there) when they visited the classic URL of the form http://somesite/wp-admin/. Here is a writeup of some notes I had kept while troubleshooting that issue and then upgrading to […]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Νοεμβρίου 16, 2017
  • Robot modelling formats for simulation

    Several XML-based formats have surfaced over the years that can be used to describe a robot. Apart from URDF (and SRDF) of ROS origin, the Gazebo simulator has been promoting SDF (an evolution of URDF with emphasis on physics simulation), while MJCF apart from being available as URDF extensions, also has its own format with […]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Ιουνίου 17, 2017
  • Background info on libpng warning: iCCP: known incorrect sRGB profile

    I was just checking some log file saved from Buildbox and seems Qt framework was logging the error: libpng warning: iCCP: known incorrect sRGB profile Did some quick research on Google (sorry dear Bing) and added the following background info to the respective question on StackOverflow: ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Απριλίου 14, 2017
  • Fix: Delphi error MSBuildToolsPath is not specified for the ToolsVersion …

    This is my answer at: http://stackoverflow.com/questions/32936544/delphi-10-seattle-trial-fails-to-compile-anything-gives-an-msbuild-error for the issue of Delphi showing on build the error MSBuildToolsPath is not specified for the ToolsVersion "12.0" defined at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSBuild\ToolsVersions\12.0", or ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Μαρτίου 6, 2017
  • Nested LINQ Aggregate queries vs Nested Foreach statements example

    At Trafilm project’s Metadata (http://github.com/zoomicon/Trafilm.Metadata) I have a linked data structure where a Film contains multiple Conversations which contain multiple L3SToccurrences, which in turn contain multiple L3TToccurrences. I had the need to calculate a list of all unique L2language values of L3TToccurrence grand-grand-children for ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Μαΐου 29, 2016
  • HowTo: Hide HTML markup from non-signedin users at MonoX Social CMS

    At MonoX Social CMS, which I use at both ClipFlair Social and Trafilm websites, I was in the need of hiding some HTML markup when the user is not signed-in. The solution for this is to add runat="server" to the HMTL element one wants to hide and then set the Visible property that the object […]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Μαΐου 26, 2016
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