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  • How to get around the Circular Reference issue with JSON and Entity

    - by DanScan
    I have been experimenting with creating a website that leverages MVC with JSON for my presentation layer and Entity framework for data model/database. My Issue comes into play with serializing my Model objects into JSON. I am using the code first method to create my database. When doing the code first method a one to many relationship (parent/child) requires the child to have a reference back to the parent. (Example code my be a typo but you get the picture) class parent { public List<child> Children{get;set;} public int Id{get;set;} } class child { public int ParentId{get;set;} [ForeignKey("ParentId")] public parent MyParent{get;set;} public string name{get;set;} } When returning a "parent" object via a JsonResult a circular reference error is thrown because "child" has a property of class parent. I have tried the ScriptIgnore attribute but I lose the ability to look at the child objects. I will need to display information in a parent child view at some point. I have tried to make base classes for both parent and child that do not have a circular reference. Unfortunately when I attempt to send the baseParent and baseChild these are read by the JSON Parser as their derived classes (I am pretty sure this concept is escaping me). Base.baseParent basep = (Base.baseParent)parent; return Json(basep, JsonRequestBehavior.AllowGet); The one solution I have come up with is to create "View" Models. I create simple versions of the database models that do not include the reference to the parent class. These view models each have method to return the Database Version and a constructor that takes the database model as a parameter (viewmodel.name = databasemodel.name). This method seems forced although it works. NOTE:I am posting here because I think this is more discussion worthy. I could leverage a different design pattern to over come this issue or it could be as simple as using a different attribute on my model. In my searching I have not seen a good method to overcome this problem. My end goal would be to have a nice MVC application that heavily leverages JSON for communicating with the server and displaying data. While maintaining a consistant model across layers (or as best as I can come up with).

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  • PHP : deux correctifs pour le bogue des nombres à virgule flottante, l'équipe de PHP recommande de l'appliquer immédiatement

    PHP : deux correctifs pour le bogue des nombres à virgule flottante L'équipe de PHP recommande de l'appliquer immédiatement Mise à jour du 07/01/2011 L'équipe de développement de PHP vient de publier des patchs pour corriger le bogue étrange découvert cette semaine. Un bogue capable de provoquer le crash du système par le passage d'un simple paramètre dans l'URL des sites hébergés sur des systèmes x86 (pour plus de détails, lire ci-avant) Après analyse, il s'agit vraisemblablement d'un bogue sur le code optimisé pour les x86 du GCC (le compilateur du projet GNU) à l'origine d'une incompatibilité avec x87, l'Unité de calc...

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  • Keyword Usage For Maximum SEO

    After analyzing and ranking your keywords for profitability you now need to know what to do with them. The keywords you choose are only useful if you use them correctly. You don't need to know computer programming or even how the search engines work, just follow these simple tips and you will get the maximum search engine optimization benefit from your keywords.

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  • Link Tracking

    Finding the correct way to utilize your link tracking software is actually a very simple task for even the green SEO learner. Everyone knows that you want to have as many links as possible pointing to your site to increase your rankings in the SERP's thus increasing the amount of traffic coming to your site via major search engines.

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  • Ajouter l'accès RDP à une application LightSwitch 2011 déployée sur Windows Azure, un article d'Avkash Chauhan, traduit par Deepin Prayag

    Citation: Visual Studio LightSwitch 2011 propose des « starter kits » et des options de déploiement flexibles qui vous aident à créer et à facilement publier des applications métier personnalisées à l'aspect professionnel et distingué, sans nécessité de code. Visual Studio LightSwitch propose une manière simple de développer des applications métier de type bureau ou Cloud. LightSwitch gère toute la plomberie pour vous, afin que vous puissiez vous concentrer sur la création de valeurs métier. Partie 3 :

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  • High Search Engine Ranking Optimization Tips - Do it Yourself

    Have you been looking for a simple way to learn high search engine ranking optimization techniques that works? Look no further as I reveal the little secrets of increasing my page rank on Google within 30 days for virtually all my websites. After you are through with reading this article, you will be able to optimize your web pages with the right keywords without much hassle.

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  • ADO.NET Data Services business logic processing

    a simple approach that provides business logic processing before forwarding data to the clients with ADO.NET Data Services.  read moreBy Siyamand AyubiDid 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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  • The Doorway to a Quality SEO Company

    To figure out what we saw in the short breather, let us try to make a synopsis from a bird's eye point of view. An SEO service comprises of some simple yet mandatory basics which should not be refuted for the quality maintenance. From the professional aspect, it is a rare combination of database management, application of programming logic, statistical analysis and innovative marketing.

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  • Getting Started With Knockout.js

    - by Pawan_Mishra
    Client side template binding in web applications is getting popular with every passing day. More and more libraries are coming up with enhanced support for client side binding. jQuery templates is one very popular mechanism for client side template bindings. The idea with client side template binding is simple. Define the html mark-up with appropriate place holder for data. User template engines like jQuery template to bind the data(JSON formatted data) with the previously defined mark-up.In this...(read more)

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  • Stairway to SQL PowerShell Level 4: Objects in SQL PowerShell

    This far, we have learned about installation and setup of the PowerShell environment. You should now have a foundation of SQL Server PowerShell. We now are ready to learn about Objects in SQL PowerShell. Schedule Azure backupsRed Gate’s Cloud Services makes it simple to create and schedule backups of your SQL Azure databases to Azure blob storage or Amazon S3. Try it for free today.

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  • Ubuntu 12.10 : la recherche sur Amazon maintenue, mais elle peut être désactivée à partir des options de confidentialité

    Ubuntu 12.10 : les utilisateurs agacés par un "adware" Amazon Intégré à la recherche de bureau, Canonical tente de rassurer les mécontents La prochaine version en gestation d'Ubuntu (12.10 ou Quetzal Quantal) intègre une nouvelle fonctionnalité polémique qui affiche des suggestions de produits à acheter sur Amazon via une simple recherche de bureau. Mais comment ça marche ? Lorsqu'un utilisateur lance une recherche ordinaire d'un fichier ou d'une application sur son bureau, des liens Amazon vers des articles rattachés aux mot-clés saisis apparaissent avec les résultats du Launchpad.

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  • Phone number mask in a DataView WebPart (DVWP)

    - by PeterBrunone
    This came up today on the [sharepointdiscussions] list.  A user needed to display a read-only field in a phone number format; it's pretty simple, but it may be just what you need.Assuming your list item contains a field called "Phone Number" (with a space), the following XPath will give you a number in the classic US telephone format: <xsl:value-of select="concat('(',substring(@Phone_x0020_Number,1,3),')',substring(@Phone_x0020_Number,4,3),'-',substring(@Phone_x0020_Number,7,4))" /> If you need to mask an input, try this jQuery solution.

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  • Model format for small game

    - by DeadMG
    I'm writing my own small-time game from scratch, and now I'm looking to start creating models. I've been wondering- what is the best model format to use? Given that I will be writing the model loading code myself and using whatever program generates them. Ideally, I'd look for a format that has fairly wide support between modelling programs, so I can pick the one I like most to actually perform the building, and the format itself would be relatively simple to load, rather than having all of the latest features.

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  • Analyze Your SEO Competition

    It is vital to analyze your Search Engine Optimization or SEO competition as part of running any business. With your online business technology has made it a relatively simple task, but it is essential to verify regularly where you stand against your competition.

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  • Website - 5 Mistakes to Avoid

    Usually, the first thing new internet marketers think of is having their own website to sell their products and communicate with visitors. Here are five simple mistakes to avoid.

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  • Securing the Tabular BI Semantic Model

    This paper introduces the security model for tabular BI semantic models in SQL Server 2012. You will learn how to create roles, implement dynamic security, configure impersonation settings, manage roles, and choose a method for connecting to models that works in your network security context. New! SQL Monitor 3.0 Red Gate's multi-server performance monitoring and alerting tool gets results from Day One.Simple to install and easy to use – download a free trial today.

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  • Display system information

    - by Robottinosino
    I would like output akin to that of OSX's system_profiler (https://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man8/system_profiler.8.html) On Ubuntu, I have to string a few utilities togeter: uname -a, lshw, ifconfig, etc... and then extract the list of installed software packages... Is there a single, simple facade to getting human readable system info from the CLI?

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  • Organization &amp; Architecture UNISA Studies &ndash; Chap 13

    - by MarkPearl
    Learning Outcomes Explain the advantages of using a large number of registers Discuss the way in which compilers optimize register usage Discuss the evolution of CISC machines Describe the characteristics of RISC architecture Discuss the RISC vs. CISC controversy Describe the way in which RISC and CISC design principles can be combined Instruction Execution Characteristics To understand the the line of reasoning of RISC advocates, we need a brief overview of instruction execution characteristics. These include… Operations Operands Procedure Calls These three sections can be studied in depth in the textbook at pages 503 - 505 A number of groups have come up with the conclusion that the attempt to make the instruction set architecture closer to HLLs (High Level Languages) is not the most effective design strategy. Rather HLL’s can be best supported by optimizing performance of the most time-consuming features of typical HLL programs. Generally 3 main characteristics came up to improve performance… Use a large number of registers or use a compiler to optimize register usage Careful attention needs to be paid to the design of instruction pipelines A simplified (reduced) instruction set is indicated The use of a large register optimization One of the most important design principles of RISC machines is the use of a large number of registers. The concept of register windows and the use of a large register file versus the use of cache memory are discussed. On the face of it, the use of a large set of registers should decrease the need to access memory. The design task is to organize the registers in such a fashion that this goal is realized. Read page 507 – 510 for a detailed explanation. Compiler-based register optimization   Reduced Instructions Set Architecture There are two advantages to smaller programs… Because the program takes up less memory, there is a savings in that resource (this was more compelling when memory was more expensive) Smaller programs should improve performance, and this will happen in two ways – fewer instructions means fewer instruction bytes to be fetched and in a paging environment smaller programs occupy fewer pages, reducing page faults. Certain characteristics are common to RISC processors… One instruction per cycle Register-to-register operations Simple addressing modes Simple instruction formats RISC vs. CISC After initial enthusiasm for RISC machines, there has been a growing realization that RISC designs may benefit from the inclusion of some CISC features CISC designs may benefit from the inclusion of some RISC features

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  • SQL SERVER Create Primary Key with Specific Name when Creating Table

    It is interesting how sometimes the documentation of simple concepts is not available online. I had received email from one of the reader where he has asked how to create Primary key with a specific name when creating the table itself. He said, he knows the method where he can create the table and then [...]...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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