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  • WPF Designer Error "Could not create an instance of type"

    Suppose that in a WPF application there are some custom User Controls implemented. During development in some windows that use the custom User Control you may find that the designer cannot load them and instead it gives the following error: "Could not create an instance of type YOURCONTROLHERE" This happens because the designer runs the constructor for the User Control whenever it needs to display it in design mode. Within the constructor something throws an exception. Sometimes this does not mean Διαβάστε περισσότερα »...
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  • Free 1st episode of Tales of Monkey Island pirate game for just one day

    For only one day, at " Play like a Pirate " webpage from Telltale Games you can register to download for free the first episode of the new " Tales of Monkey Island " game sequel. Available through midnight (PST) September 19th only so hurry up if you're a fan of pirate adventure games. Διαβάστε περισσότερα »...
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  • Xaf tip # 6 Linq your Session queries

    Pretty silent these days eh? I am working on a big refactoring on DictionaryDifference and have not much time to blog. But have another tip for my Xaf Tips series today maybe not strictly Xaf but is an XPO tip that you can use with your Xaf applications . The Problem Suppose your are a strongly typed fun like me or you want to use linq to query objects inside a transaction. In order linq to be used with XPO DevExpress provides XPQuery<T> class but unfortunately this do not support transactions. So the following test fails var work = new UnitOfWork(); new User(work){UserName = "Sam" }; User firstOrDefault = new XPQuery<User>(work).Where(user => user.UserName == "Sam" ).FirstOrDefault(); Assert.IsNotNull(firstOrDefault); The solution Διαβάστε περισσότερα »...
    17-09-2009, 16:07 από A.Bekiaris's .Net / Xaf Blog στο A. Bekiaris's Blog
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  • Too much power management can kill you

    QUIZ You can tell that something is wrong when: Something that usually takes half an hour is not finished after 5 hours OR Yet another piece of technology is functioning in unintended ways. A couple of days ago I read... Διαβάστε περισσότερα »...
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  • Free Websites in Moments - The DevHub Platform!

    A while ago, while browsing, i came up to a great platform that gives you the ability to create a free website in moments! Everyone can argue that this can be done with blogs also. Yes it can but with DevHub you have a much richer set of choices and also you can monetize easily! Because i am lazy to write much you can have a look here ......
    16-09-2009, 22:04 από το μέλος Pak στο Pak's Technical Blog
  • Updating WDF on Vista checked build

    I had some trouble today with the Windows 7 WDK when I tried to install a driver on the checked build of Windows Vista x86. Actually I found the answer after searching around a little bit, but since all the... Διαβάστε περισσότερα »...
  • Visual Studio Debugging Tip

    More than words can say... ntStatus is declared as DWORD or anything equivalent to unsigned long. Works both for Visual Studio 2008 and Visual Studio 2005. Fare well Error Lookup ;-) Have Fun! Dimitris Staikos Διαβάστε περισσότερα »...
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  • Δωρεάν αποστολή με Courier για το ΟΛΥΜΠΙΑ PASS

    Μέχρι 15 Σεπτεμβρίου 2009 (σήμερα!) με ένα τηλεφώνημα στο 22960-95555 (ίσως χρειαστεί να περιμένετε αρκετή ώρα στην αναμονή!) η ΟΛΥΜΠΙΑ ΟΔΟΣ σας στέλνει ΔΩΡΕΑΝ με courier αν είστε ιδιώτης το ΟΛΥΜΠΙΑ PASS (ηλεκτρονικό μηχάνημα για εύκολη και γρήγορη διέλευση από την ειδική λωρίδα διοδίων στον άξονα Ελευσίνα-Κόρινθος-Πάτρα - του προσθέτετε μονάδες είτε στους σταθμούς εξυπηρέτησης διοδίων, Διαβάστε περισσότερα »...
  • New Look !

    This Blog has now a new look ! Hope you like it. Διαβάστε περισσότερα »...
  • Microsoft Windows 7, Windows Server 2008 R2 and Exchange Server 2010 virtual launch event

    Microsoft is launching three new versions of its well known Desktop and Server OS/apps at a virtual launch event . Also, if you're in the US, you can sign up for a live event near you for a free copy of Windows 7 (only one gift per person). Terms and Conditions * Offer good only in the 50 United States (includes D. of C.) to attendees of the Microsoft New Efficiency Launch. Limit one Διαβάστε περισσότερα »...
  • Google uses ClickOnce to download Google Chrome!

    I had a little problem today accessing a web resource and I decided to download Google Chrome "to get a second opinion". The last time I did the same thing was quite some time ago and since I got a new laptop recently I hadn't installed it yet. And guess what I found out? Ok, you don't have to guess... you read the title... Yes, Google uses Microsoft .NET's ClickOnce technology to download and automatically upgrade Google Chrome in Windows Environment! If this is not a surprise what is!? Check it out... ! However... Διαβάστε περισσότερα »...
    14-09-2009, 15:06 από papadi.gr Development Blog στο papadi DevBlog
  • letrec

    Ο Bart de smet συνεχίζει την πολύ καλή σειρά από posts, και αυτή την φορα μας παρουσιάζει ένα cache Enumerable , μαζί με έναν "let" binder. Φυσικά λείπει το αδελφάκι "letrec", όπου έμεινε ως άσκηση για τον αναγνώστη. (η αφορμή που έψαχνα για να ξυπνήσει Ο old schemer μέσα μου) delegate Func<A, R> Recursive<A, R>(Recursive<A, R> r); static Func<A, R> Y<A, R>(Func<Func<A, R>, Func<A, R>> f) { Recursive<A, R> rec = r => a => f(r(r))(a); return rec(rec); } public static IEnumerable<U> Let<T, U>( this IEnumerable<T> source, Func<IEnumerable<T>, IEnumerable<U>> function) { using (var mem = new MemoizeEnumerable<T>(source)) { foreach (var item in function(mem)) yield return item; } } public static IEnumerable<U> LetRec<T, U>( this IEnumerable<T> source, Func<Func<IEnumerable<T>, IEnumerable<U>>, Func<IEnumerable<T>, IEnumerable<U>>> function) { Func<Func<IEnumerable<T>,...
    13-09-2009, 22:44 από το μέλος PALLADIN στο Thoughts and Code
  • My favorite cat rescuing game on the PC

    Super Granny from Sandlot Games is a series of 2D platform games I really love. You control a granny cartoon-like character, trying to collect various stray cats and lead them to a safe place, while avoiding or fighting (or trapping into holes you dig with your shovel) various vicious opponents. You can play a version of it online in Flash, but I prefer running the downloadable version Διαβάστε περισσότερα »...
  • I now am a DX-Squad member

    Great Saturday today cause I just received my DX-Squad membership today :) and I am very happy. I wanted to say a big thanks and that i am honored by that invitation. DX-Squad is a similar program than Microsoft MVP. If you want also to be a member read more about it here Διαβάστε περισσότερα »...
    12-09-2009, 01:49 από A.Bekiaris's .Net / Xaf Blog στο A. Bekiaris's Blog
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  • Latest MySQL .NET Connector missing features?

    I noticed that if one installs the latest (version 6.0.4) MySQL .NET Connector, Server Explorer pane in Visual Studio 2008 doesn't show the "Browse or Edit Data" action in the context menu for a table anymore. Uninstalling it and installing a previous version (tried with version 5.2.7) makes that action show up again OK. Διαβάστε περισσότερα »...
  • Τώρα που πλησιάζουν και οι εκλογές...

    Από το τεύχος 2 (άνοιξη 2009) του "ΤΑΧΥΔΡΟΜΙΚΟ ΤΑΜΙΕΥΤΗΡΙΟ magazine" (τριμηνιαία έκδοση), διαβάζω σε άρθρο-συνέντευξη του προέδρου (τη στιγμή της συνέντευξης) της Ένωσης Δικαστών κ' Εισαγγελέων, Αεροπαγίτη, κ. Χ. Αθανασίου: Αφορμή της συνέντευξης αυτής στάθηκε το επιτυχημένο προϊόν του 2008 με την ονομασία "Προσωπικό Δάνειο Προεξόφλησης Αναδρομικών Δημοσίου", με Διαβάστε περισσότερα »...
  • Featured at MSDN home page

    What a great honor this is, I’m featured at the home page of the Greek MSDN site ;-). Διαβάστε περισσότερα »...
    11-09-2009, 12:19 από K# στο K#
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  • New Silverlight Resources in Faculty Resource Center!

    You can find these newly-added Silverlight resources on Faculty Resource Center ( www.facultyresourcecenter.com ) · Introduction to Silverlight – Lab 1 of 5 · Key Features of Silverlight – Lab 2 of 5 · Designer & Developer Collaboration – Lab 3 of 5 · Media, Ink, & Deep Zoom – Lab 4 of 5 · Navigation Framework – Lab 5 of 5 Μοιραστείτε τη δημοσίευση: email-it! | Share on Facebook Διαβάστε περισσότερα »...
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  • Παρουσίαση στο PCI 2009 – Eureka 2009

    Εδώ μπορείτε να βρείτε τη σημερινή παρουσίασή μου στα πλαίσια των χαιρετισμών στα 13ο Πανελλήνιο Συνέδριο Πληροφορικής (PCI, http://pci2009.ionio.gr/ ) και 3ο Πανελλήνιο Επιστημονικό Φοιτητικό Συνέδριο Πληροφορικής (ΕΥΡΗΚΑ, http://eureka09.ceid.upatras.gr/ ). Ευχαριστώ πολύ τις οργανωτικές επιτροπές των δύο συνεδρίων για την ευγενική πρόσκλησή τους! Μοιραστείτε τη δημοσίευση: email-it! Διαβάστε περισσότερα »...
  • Irrational By Design

    Compared to the average person I would probably rank as a pretty experienced computer user. This unfortunately means (and that’s not Windows specific) that I am often expected to take irrational actions in order to produce the desired outcome. Lately,... Διαβάστε περισσότερα »...
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  • Uploading your database to SQL Azure

    Ok you’ve developed your cloud application and you’re ready to publish it to Azure, wait a minute how are you going to upload your database to SQL Azure? Of course you just can’t do a backup – restore to the cloud so what are your options? Well actually there are two ways you could deploy a database to SQL Azure. With the first one you manually create your db schema installation script Διαβάστε περισσότερα »...
    08-09-2009, 15:46 από K# στο K#
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  • Connect to SQL Azure

    A few weeks back Microsoft announced the first CTP of SQL Azure, its new cloud relational persistence offering. In this post I will show you how you can connect and query your SQL Azure DBs from your PC. There are two ways you can interact with SQL Azure, one is through the SQLCMD command line program and the other is through SQL Server Management studio. To connect to SQL Azure using Διαβάστε περισσότερα »...
    08-09-2009, 15:44 από K# στο K#
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  • Xaf tip #5 Running Controllers everywhere

    I recently being asked a lot about a way of making Xaf front end (that is your Solution.Win,Solution.Web) able to host controllers. To many of them i answered that is not possible cause of the Xaf architecture but haven’t thought of it, It was a rushed answer. Anyway i do not have to make a lot of thoughts on it since my friend Panagiotis Kefalidis share that trick with us. First lets give an example of why you want to run controller in your front end. Many security systems need to have access to your executable and through it to your main form. For Xaf the only way to get access to your form is through a controller. So the trick is to fool Xaf front end to make it behave like a module. Modules are capable to run controllers. And how you can do that? It is really Διαβάστε περισσότερα »...
    08-09-2009, 01:12 από A.Bekiaris's .Net / Xaf Blog στο A. Bekiaris's Blog
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  • List of ASP.NET Content Management Systems (CMS)

    Here is a small list of some content management systems written in ASP.NET. I’ll appreciate to notify me if you find more of them! http://www.kentico.com/ http://www.visitmix.com/Lab/Oxite http://umbraco.org/ http://www.axcms.net/ http://www.sitefinity.com/ http://n2cms.com/ http://www.dotnetnuke.com http://www.telligent.com Μοιραστείτε τη δημοσίευση: email-it! | Share on Facebook | Διαβάστε περισσότερα »...
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  • Linq To SQL Caching Adventures Part 2

    Before picking up where I left off yesterday , I have to first make a small disclaimer. I received a couple of comments stating that the caching solution I presented wasn’t that sophisticated or complete or that the cache keys that I’ve used were not the right and the answer is of course “yes”. The solution I presented was far from perfect but it served well as a simplified demonstration Διαβάστε περισσότερα »...
    06-09-2009, 00:25 από K# στο K#
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