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  • Running a Silverlight application in the Google App Engine platform

    - by rajbk
    This post shows you how to host a Silverlight application in the Google App Engine (GAE) platform. You deploy and host your Silverlight application on Google’s infrastructure by creating a configuration file and uploading it along with your application files. I tested this by uploading an old demo of mine - the four stroke engine silverlight demo. It is currently being served by the GAE over here: http://fourstrokeengine.appspot.com/ The steps to run your Silverlight application in GAE are as follows: Account Creation Create an account at http://appengine.google.com/. You are allocated a free quota at signup. Select “Create an Application”   Verify your account by SMS   Create your application by clicking on “Create an Application”   Pick an application identifier on the next screen. The identifier has to be unique. You will use this identifier when uploading your application. The application you create will by default be accessible at [applicationidentifier].appspot.com. You can also use custom domains if needed (refer to the docs).   Save your application. Download SDK  We will use the  Windows Launcher for Google App Engine tool to upload our apps (it is possible to do the same through command line). This is a GUI for creating, running and deploying applications. The launcher lets you test the app locally before deploying it to the GAE. This tool is available in the Google App Engine SDK. The GUI is written in Python and therefore needs an installation of Python to run. Download and install the Python Binaries from here: http://www.python.org/download/ Download and install the Google App Engine SDK from here: http://code.google.com/appengine/downloads.html Run the GAE Launcher. Select Create New Application.   On the next dialog, give your application a name (this must match the identifier we created earlier) For Parent Directory, point to the directory containing your Silverlight files. Change the port if you want to. The port is used by the GAE local web server. The server is started if you choose to run the application locally for testing purposes. Hit Save. Configure, Test and Upload As shown below, the files I am interested in uploading for my Silverlight demo app are The html page used to host the Silverlight control The xap file containing the compiled Silverlight application A favicon.ico file.   We now create a configuration file for our application called app.yaml. The app.yaml file specifies how URL paths correspond to request handlers and static files.  We edit the file by selecting our app in the GUI and clicking “Edit” The contents of file after editing is shown below (note that the contents of the file should be in plain text): application: fourstrokeengine version: 1 runtime: python api_version: 1 handlers: - url: /   static_files: Default.html   upload: Default.html - url: /favicon.ico   static_files: favicon.ico   upload: favicon.ico - url: /FourStrokeEngine.xap   static_files: FourStrokeEngine.xap   upload: FourStrokeEngine.xap   mime_type: application/x-silverlight-app - url: /.*   static_files: Default.html   upload: Default.html We have listed URL patterns for our files, specified them as static files and specified a mime type for our xap file. The wild card URL at the end will match all URLs that are not found to our default page (you would normally include a html file that displays a 404 message).  To understand more about app.yaml, refer to this page. Save the file. Run the application locally by selecting “Browse” in the GUI. A web server listening on the port you specified is started (8080 in my case). The app is loaded in your default web browser pointing to http://localhost:8080/. Make sure the application works as expected. We are now ready to deploy. Click the “Deploy” icon. You will be prompted for your username and password. Hit OK. The files will get uploaded and you should get a dialog telling you to “close the window”. We are done uploading our Silverlight application. Go to http://appengine.google.com/ and launch the application by clicking on the link in the “Current Version” column.   You should be taken to a URL which points to your application running in Google’s infrastructure : http://fourstrokeengine.appspot.com/. We are done deploying our application! Clicking on the link in the Application column will take you to the Admin console where you can see stats related to system usage.  To learn more about the Google Application Engine, go here: http://code.google.com/appengine/docs/whatisgoogleappengine.html

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  • Using the Katana Authentication handlers with NancyFx

    - by cibrax
    Once you write an OWIN Middleware service, it can be reused everywhere as long as OWIN is supported. In my last post, I discussed how you could write an Authentication Handler in Katana for Hawk (HMAC Authentication). Good news is NancyFx can be run as an OWIN handler, so you can use many of existing middleware services, including the ones that are ship with Katana. Running NancyFx as a OWIN handler is pretty straightforward, and discussed in detail as part of the NancyFx documentation here. After run the steps described there and you have the application working, only a few more steps are required to register the additional middleware services. The example bellow shows how the Startup class is modified to include Hawk authentication. public class Startup { public void Configuration(IAppBuilder app) { app.UseHawkAuthentication(new HawkAuthenticationOptions { Credentials = (id) => { return new HawkCredential { Id = "dh37fgj492je", Key = "werxhqb98rpaxn39848xrunpaw3489ruxnpa98w4rxn", Algorithm = "hmacsha256", User = "steve" }; } }); app.UseNancy(); } } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } This code registers the Hawk Authentication Handler on top of the OWIN pipeline, so it will try to authenticate the calls before the request messages are passed over to NancyFx. The authentication handlers in Katana set the user principal in the OWIN environment using the key “server.User”. The following code shows how you can get that principal in a NancyFx module, public class HomeModule : NancyModule { public HomeModule() { Get["/"] = x => { var env = (IDictionary<string, object>)Context.Items[NancyOwinHost.RequestEnvironmentKey]; if (!env.ContainsKey("server.User") || env["server.User"] == null) { return HttpStatusCode.Unauthorized; } var identity = (ClaimsPrincipal)env["server.User"]; return "Hello " + identity.Identity.Name; }; } } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } Thanks to OWIN, you don’t know any details of how these cross cutting concerns can be implemented in every possible web application framework.

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  • Retrieving only the first record or record at a certain index in LINQ

    - by vik20000in
    While working with data it’s not always required that we fetch all the records. Many a times we only need to fetch the first record, or some records in some index, in the record set. With LINQ we can get the desired record very easily with the help of the provided element operators. Simple get the first record. If you want only the first record in record set we can use the first method [Note that this can also be done easily done with the help of the take method by providing the value as one].     List<Product> products = GetProductList();      Product product12 = (         from prod in products         where prod.ProductID == 12         select prod)         .First();   We can also very easily put some condition on which first record to be fetched.     string[] strings = { "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine" };     string startsWithO = strings.First(s => s[0] == 'o');  In the above example the result would be “one” because that is the first record starting with “o”.  Also the fact that there will be chances that there are no value returned in the result set. When we know such possibilities we can use the FirstorDefault() method to return the first record or incase there are no records get the default value.        int[] numbers = {};     int firstNumOrDefault = numbers.FirstOrDefault();  In case we do not want the first record but the second or the third or any other later record then we can use the ElementAt() method. In the ElementAt() method we need to pass the index number for which we want the record and we will receive the result for that element.      int[] numbers = { 5, 4, 1, 3, 9, 8, 6, 7, 2, 0 };      int fourthLowNum = (         from num in numbers         where num > 5         select num )         .ElementAt(1); Vikram

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  • New Visual Studio 2012 Project Templates for DotNetNuke

    - by Chris Hammond
    Earlier this month Microsoft put the bits up for Visual Studio 2012 RTM out on MSDN Subscriber downloads, and during the first two weeks of September they will officially be releasing Visual Studio 2012. I started working with VS2012 late in the release candidate cycle, doing some DNN module development using my templates at http://christoctemplate.codeplex.com . These templates work fine in Visual Studio 2012 from my testing, but they still face the same problem that they had in Visual Studio 2008...(read more)

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  • Deferred vs Immediate execution in Linq

    - by Jalpesh P. Vadgama
    In this post, We are going to learn about Deferred vs Immediate execution in Linq.  There an interesting variations how Linq operators executes and in this post we are going to learn both Deferred execution and immediate execution. What is Deferred Execution? In the Deferred execution query will be executed and evaluated at the time of query variables usage. Let’s take an example to understand Deferred Execution better. Example: Following is a code for that. using System; using System.Collections.Generic; using System.Linq; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { var customers = new List<Customer>( new[] { new Customer{FirstName = "Jalpesh",LastName = "Vadgama"}, new Customer{FirstName = "Vishal",LastName = "Vadgama"}, new Customer{FirstName = "Tushar",LastName = "Maru"} } ); var newCustomers = customers.Where(c => c.LastName == "Vadgama"); customers.Add(new Customer {FirstName = "Teerth", LastName = "Vadgama"}); foreach (var c in newCustomers) { Console.WriteLine(c.FirstName); } } public class Customer { public string FirstName { get; set; } public string LastName { get; set; } } } } More on my personal blog @www.dotnetjalps.com

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  • Show #14 DotNetNuke 5.6.1, Razor/Webmatrix and WebCamps

    - by Chris Hammond
    Once again, it’s been far too long since the last show, this time just over 4 months, For Show #14 I am joined by Joe Brinkman. Take a listen and see what has been going on in the DNN world. Length: 47:56 Size: 43.8mb MP3 Download Welcome back to DNNVoice Welcome to guest Joe Brinkman ( http://blog.theaccidentalgeek.com/ ) Introduction to Joe and Welcome back from Chris Hammond ( http://www.chrishammond.com ) and what he's been doing DotNetNuke Training Free Extensions Module Development Templates...(read more)

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  • HUGE EF4 Inheritance Bug

    - by djsolid
    Well maybe not for everyone but for me is definitely really important. That is why I get straight into the point. We have the following model: Which maps to the following database: We are using EF4.0 and we want to load all Burgers including BurgerDetails. So we write the following query: But it fails. The error is : “The ResultType of the specified expression is not compatible with the required type. The expression ResultType is 'Transient.reference[SampleEFDBModel.Food]' but the required type is 'Transient.reference[SampleEFDBModel.Burger]'.Parameter name: arguments[0]”   So in the new version of EF there is no way to eager load data through Navigation Properties with 1-1 relationships defined in subclasses. Here is the relevant Microsoft Connect Issue. It is described through an other example but the result is the same.  Please if you think this is important vote up on Microsoft Connect.   EF 4.0 has many improvements. I am using it since v1 in large-scale projects and this version is faster,produces cleaner sql, more reliable and can be used for complicated business scenarios. That is why I believe this issue should be solved as soon as possible. I understand that release cycles are slow but I am hoping atleast for a hotfix. I also have uploaded the example project so you can test it. Download it from here. If anyone has found any workarounds please post it in the comments section. Thanks!

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  • All the posts in LINQ series

    - by vik20000in
    In Last few weeks I have done a few LINQ series Post. Here is a list of all the posts done.Filtering data in LINQ with the help of where clauseUsing Take and skip keyword to filter records in LINQ TakeWhile and SkipWhile method in LINQLINQ and ordering of the result setGrouping data in LINQ with the help of group keywordUsing set operation in LINQLINQ and conversion operatorsRetrieving only the first record or record at a certain index in LINQUsing Generation operator in LINQWorking with Joins in LINQLINQ and Aggregate function Vikram

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  • Func Delegate in C#

    - by Jalpesh P. Vadgama
    We already know about delegates in C# and I have previously posted about basics of delegates in C#. Following are posts about basic of delegates I have written. Delegates in C# Multicast Delegates in C# In this post we are going to learn about Func Delegates in C#. As per MSDN following is a definition. “Encapsulates a method that has one parameter and returns a value of the type specified by the TResult parameter.” Func can handle multiple arguments. The Func delegates is parameterized type. It takes any valid C# type as parameter and you have can multiple parameters and also you have specify the return type as last parameters. Followings are some examples of parameters. Func<int T,out TResult> Func<int T,int T, out Tresult> Now let’s take a string concatenation example for that. I am going to create two func delegate which will going to concate two strings and three string. Following is a code for that. using System; using System.Collections.Generic; namespace FuncExample { class Program { static void Main(string[] args) { Func<string, string, string> concatTwo = (x, y) => string.Format("{0} {1}",x,y); Func<string, string, string, string> concatThree = (x, y, z) => string.Format("{0} {1} {2}", x, y,z); Console.WriteLine(concatTwo("Hello", "Jalpesh")); Console.WriteLine(concatThree("Hello","Jalpesh","Vadgama")); Console.ReadLine(); } } } As you can see in above example, I have create two delegates ‘concatTwo’ and ‘concatThree. The first concat two strings and another concat three strings. If you see the func statements the last parameter is for the out as here its output string so I have written string as last parameter in both statements. Now it’s time to run the example and as expected following is output. That’s it. Hope you like it. Stay tuned for more updates.

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  • Fix: Azure Disabled over 49 cents? Beware of using a Java Virtual Machine on Microsoft Azure

    - by Ken Cox [MVP]
    I love my MSDN Azure account. I can spin up a demo/dev app or VM in seconds. In fact, it is so easy to create a virtual machine that Azure shut down my whole account! Last night I spun up a Java Virtual Machine to play with some Android stuff. My mistake was that I didn’t read the Virtual Machine pricing warning: “I have a MSDN Azure Benefit subscription. Can I use my monthly Azure credits to purchase Oracle software?” “No, Azure credits in our MSDN offers are not applicable to Oracle software. In order to purchase Oracle software in the MSDN Azure Benefit subscription, customers need to turn off their {0} spending limit and pay at the regular pay-as-you-go rate. Otherwise, Oracle usage will hit the {1} spending limit and the subscription will be immediately disabled.”  Immediately disabled? Yup. Everything connected to the subscription was shut off, deallocated, rendered useless - even the free Web sites and the free Sendgrid email service.  The fix? I had to remove the spending limit from my account so I could pay $0.49 (49 cents) for the JVM usage. I still had $134.10 in credits remaining for regular usage with 6 days left in the billing month.  Now the restoration/clean-up begins… figuring out how to get the web sites and services back online.  To me, the preferable way would be for Azure to warn me when setting up a JVM that I had no way of paying for the service. In the alternative, shut down just the offending services – the ones that can’t be covered by the regular credits. What a mess.

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  • Adding a website link to the Member Directory in DotNetNuke 6.2

    - by Chris Hammond
    In case you missed it, DotNetNuke 6.2 was released today, check out Will Morgenweck’s blog post for more details on the release . With some of the new features DotNetNuke 6.2 makes it easier to start to customize the listing of members on your site, and also the Profile display for users on the website. I started implementing DotNetNuke 6.2 on one of my racing websites last night (yeah, so I upgraded before the release happened, a benefit of working for the corp ). In doing so I configured the profile...(read more)

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  • Ms-PL Source Release for System.Web.Mvc 2

    Hot on the heels of the release of ASP.NET MVC 2 yesterday, Im happy to announce that we are releasing the source code to ASP.NET MVC 2 under the Ms-PL license, an OSI approved Open Source license. This continues the trend from nearly a year ago when we released ASP.NET MVC 1.0 under the Ms-PL. You can read my blog post there to learn more about the hard work that goes into such releases. While Im one who loves lawyer jokes, I do appreciate the work that they do (one of my best friends is a lawyer)...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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  • NoSQL is not about object databases

    - by Bertrand Le Roy
    NoSQL as a movement is an interesting beast. I kinda like that it’s negatively defined (I happen to belong myself to at least one other such a-community). It’s not in its roots about proposing one specific new silver bullet to kill an old problem. it’s about challenging the consensus. Actually, blindly and systematically replacing relational databases with object databases would just replace one set of issues with another. No, the point is to recognize that relational databases are not a universal answer -although they have been used as one for so long- and recognize instead that there’s a whole spectrum of data storage solutions out there. Why is it so hard to recognize, by the way? You are already using some of those other data storage solutions every day. Let me cite a few: The file system Active Directory XML / JSON documents The Web e-mail Logs Excel files EXIF blobs in your photos Relational databases And yes, object databases It’s just a fact of modern life. Notice by the way that most of the data that you use every day is unstructured and thus mostly unsuitable for relational storage. It really is more a matter of recognizing it: you are already doing NoSQL. So what happens when for any reason you need to simultaneously query two or more of these heterogeneous data stores? Well, you build an index of sorts combining them, and that’s what you query instead. Of course, there’s not much distance to travel from that to realizing that querying is better done when completely separated from storage. So why am I writing about this today? Well, that’s something I’ve been giving lots of thought, on and off, over the last ten years. When I built my first CMS all that time ago, one of the main problems my customers were facing was to manage and make sense of the mountain of unstructured data that was constituting most of their business. The central entity of that system was the file system because we were dealing with lots of Word documents, PDFs, OCR’d articles, photos and static web pages. We could have stored all that in SQL Server. It would have worked. Ew. I’m so glad we didn’t. Today, I’m working on Orchard (another CMS ;). It’s a pretty young project but already one of the questions we get the most is how to integrate existing data. One of the ideas I’ll be trying hard to sell to the rest of the team in the next few months is to completely split the querying from the storage. Not only does this provide great opportunities for performance optimizations, it gives you homogeneous access to heterogeneous and existing data sources. For free.

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  • TakeWhile and SkipWhile method in LINQ

    - by vik20000in
     In my last post I talked about how to use the take and the Skip keyword to filter out the number of records that we are fetching. But there is only problem with the take and skip statement. The problem lies in the dependency where by the number of records to be fetched has to be passed to it. Many a times the number of records to be fetched is also based on the query itself. For example if we want to continue fetching records till a certain condition is met on the record set. Let’s say we want to fetch records from the array of number till we get 7. For this kind of query LINQ has exposed the TakeWhile Method.     int[] numbers = { 5, 4, 1, 3, 9, 8, 6, 7, 2, 0 };     var firstNumbersLessThan6 = numbers.TakeWhile(n => n < 7);   In the same way we can also use the SkipWhile statement. The skip while statement will skip all the records that do not match certain condition provided. In the example below we are skiping all those number which are not divisible by 3. Remember we could have done this with where clause also, but SkipWhile method can be useful in many other situation and hence the example and the keyword.     int[] numbers = { 5, 4, 1, 3, 9, 8, 6, 7, 2, 0 };     var allButFirst3Numbers = numbers.SkipWhile(n => n % 3 != 0); Vikram

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  • Code refactoring with Visual Studio 2010 Part-2

    - by Jalpesh P. Vadgama
    In previous post I have written about Extract Method Code refactoring option. In this post I am going to some other code refactoring features of Visual Studio 2010.  Renaming variables and methods is one of the most difficult task for a developer. Normally we do like this. First we will rename method or variable and then we will find all the references then do remaining over that stuff. This will be become difficult if your variable or method are referenced at so many files and so many place. But once you use refactor menu rename it will be bit Easy. I am going to use same code which I have created in my previous post. I am just once again putting that code here for your reference. using System; namespace CodeRefractoring { class Program { static void Main(string[] args) { string firstName = "Jalpesh"; string lastName = "Vadgama"; Print(firstName, lastName); } private static void Print(string firstName, string lastName) { Console.WriteLine(string.Format("FirstName:{0}", firstName)); Console.WriteLine(string.Format("LastName:{0}", lastName)); Console.ReadLine(); } } } Now I want to rename print method in this code. To rename the method you can select method name and then select Refactor-> Rename . Once I selected Print method and then click on rename a dialog box will appear like following. Now I am renaming this Print method to PrintMyName like following.   Now once you click OK a dialog will appear with preview of code like following. It will show preview of code. Now once you click apply. You code will be changed like following. using System; namespace CodeRefractoring { class Program { static void Main(string[] args) { string firstName = "Jalpesh"; string lastName = "Vadgama"; PrintMyName(firstName, lastName); } private static void PrintMyName(string firstName, string lastName) { Console.WriteLine(string.Format("FirstName:{0}", firstName)); Console.WriteLine(string.Format("LastName:{0}", lastName)); Console.ReadLine(); } } } So that’s it. This will work in multiple files also. Hope you liked it.. Stay tuned for more.. Till that Happy Programming.

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  • Liberado Visual Studio 2010 Feature Pack y Power Tools

    - by carlone
      Estimados amig@s, El lunes recien pasado, fue liberado a la web (Release to Web RTW) el primer paquete de Visual Studio Feature Pack, el cual incluye Microsoft Visual Studio 2010 Visualization and Modeling Feature Pack y el Visual Studio 2010 Productivity Powertools. Realmente son dos herramientas muy poderosas de las cuales pueden obtener beneficio sobre todo en términos de eficiencia y productividad a la hora de estar haciendo programación. Visual Studio 2010 Productivity Powertools En palabras simples, esta herramienta es un conjunto de extensiones para visual studio (versión Professional para arriba), para mejorar la productividad de los programadores. Dentro de las muchas características que ofrece, podemos resaltar: Mejoras a la visualización dentro de los tabs en Visual Studio, lo cual incluye Scrollable Tabs Vertical Tabs Pinned Tabs Ventana de dialog para añadir referencias a un proyecto más eficiente y con capacidad de búsqueda Sobresaltar o marcar la línea actual (Muy útil para en monitores de alta resolución) HTML Copy, que permite copiar el código sin perder el formato Ctrl + Click Go to definition, esta es una característica que permite que al presionar la tecla control podamos ubicar hipervínculos para navegar a la definición de un símbolo. Alineación del código cuando hacemos asignación de valores Bien si de dan cuenta, son muchas las características que pueden aprovechar para mejorar su experiencia de programación dentro del entorno de Visual Studio 2010. Para descargar el instalador y obtener más información dirigirse al website: http://visualstudiogallery.msdn.microsoft.com/en-us/d0d33361-18e2-46c0-8ff2-4adea1e34fef   Microsoft Visualization and Modeling Feature Pack A través de esta herramienta podrás sacar mucho provecho para desarrollar modelos basados en UML. Nota: Este paquete esta limitado a suscriptores de MSDN y se puede descargar únicamente desde el sitio de descargas para suscriptores de MSDN. Es pre requisito tener la versión Visual Studio 2010 Ultimate para utilizar esta herramienta. Dentro de las muchas características ofrecidas, podemos resaltar: Generación de código a partir de diagramas UML Crear diagramas UML a partir del código (Ej: generar un diagrama de secuencia en base al código de su aplicación) Generar gráficas de dependencias de proyectos web Importar elementos de modelos de clase, secuencia y casos de uso de archivos XMI 2.1 Aunque esta limitada a la versión Ultimate, con esta herramienta los Arquitectos de Software y los jefes de desarrollo tendrán la posibilidad de poder controlar y diseñar mejor sus aplicaciones. Si desean ver la documentación, videos y descargar el pack pueden dirigirse a:  http://msdn.microsoft.com/en-us/vstudio/ff655021.aspx   Espero que estas herramientas les sean de mucho provecho!   Saludos, Carlos A. Lone Sigueme en Twitter @carloslonegt

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  • LINQ and conversion operators

    - by vik20000in
    LINQ has a habit of returning things as IEnumerable. But we have all been working with so many other format of lists like array ilist, dictionary etc that most of the time after having the result set we want to get them converted to one of our known format. For this reason LINQ has come up with helper method which can convert the result set in the desired format. Below is an example var sortedDoubles =         from d in doubles         orderby d descending         select d;     var doublesArray = sortedDoubles.ToArray(); This way we can also transfer the data to IList and Dictionary objects. Let’s say we have an array of Objects. The array contains all different types of data like double, int, null, string etc and we want only one type of data back then also we can use the helper function ofType. Below is an example     object[] numbers = { null, 1.0, "two", 3, "four", 5, "six", 7.0 };     var doubles = numbers.OfType<double>(); Vikram

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  • LINQ and ordering of the result set

    - by vik20000in
    After filtering and retrieving the records most of the time (if not always) we have to sort the record in certain order. The sort order is very important for displaying records or major calculations. In LINQ for sorting data the order keyword is used. With the help of the order keyword we can decide on the ordering of the result set that is retrieved after the query.  Below is an simple example of the order keyword in LINQ.     string[] words = { "cherry", "apple", "blueberry" };     var sortedWords =         from word in words         orderby word         select word; Here we are ordering the data retrieved based on the string ordering. If required the order can also be made on any of the property of the individual like the length of the string.     var sortedWords =         from word in words         orderby word.Length         select word; You can also make the order descending or ascending by adding the keyword after the parameter.     var sortedWords =         from word in words         orderby word descending         select word; But the best part of the order clause is that instead of just passing a field you can also pass the order clause an instance of any class that implements IComparer interface. The IComparer interface holds a method Compare that Has to be implemented. In that method we can write any logic whatsoever for the comparision. In the below example we are making a string comparison by ignoring the case. string[] words = { "aPPLE", "AbAcUs", "bRaNcH", "BlUeBeRrY", "cHeRry"}; var sortedWords = words.OrderBy(a => a, new CaseInsensitiveComparer());  public class CaseInsensitiveComparer : IComparer<string> {     public int Compare(string x, string y)     {         return string.Compare(x, y, StringComparison.OrdinalIgnoreCase);     } }  But while sorting the data many a times we want to provide more than one sort so that data is sorted based on more than one condition. This can be achieved by proving the next order followed by a comma.     var sortedWords =         from word in words         orderby word , word.length         select word; We can also use the reverse() method to reverse the full order of the result set.     var sortedWords =         from word in words         select word.Reverse();                                 Vikram

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  • Change default language settings in Visual Studio 2012

    - by sreejukg
    The first thing you need to do after the installation of Visual Studio 2012 is to choose the IDE preferences. Once you select your preferred collection of settings, the IDE will always choose dialogs and other options according to your selection. Nowadays developer’s needs to work with different programming environments and due to this, developers might need to reset the default settings. In this article, I am going to demonstrate how you can change the default settings in Visual Studio 2012. For the purpose of this demonstration, I have installed Visual Studio 2012 and selected C++ as my default environment settings. So now when I go to file -> new project, it will give me C++ templates by default as follows. If you want to select another language, you need to expand Other Languages section and select C# or VB. Now I am going to change these default settings. I am going to change the default language preference to C#. In Visual Studio 2012, go to tools menu and select Import and Export Settings. Here you have 3 options; one is to export the current settings so that the settings are saved for future use. Also you can import previously saved settings. The last option available is to reset it to default. It is a good Idea to export your settings and import it as you need in later stages. To reset the settings to default select the Reset option and click next. Now Visual Studio will ask you to whether you would like to save the settings, which can be used in future to restore. Select any one option and click next. For the purpose of this demo, I have selected not to save the settings. Click Next button to continue. Now Visual Studio will bring you the similar dialog that appears just after installation to select your IDE settings. Select the required settings from the available list and click Finish button. Click Finish once you are done. If everything OK, you will see the success message as below. Now go to file -> new Project, you will see the selected language appear by default. I selected C# in the previous step and the new project dialog appears as follows. Changing IDE settings in Visual Studio 2012 is very easy and straight forward.

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  • jQuery AJAX Validation Using The Validity Plugin

    - by schnieds
    Input validation is one of those areas that most developers view as a necessary evil. We know that it is necessary and we really do want to ensure that we get good input from our users. But most of us are lazy (me included) and input validation is one of those things that gets done but usually is a quick and dirty implementation. This is partly due to laziness and partly do to input validation being painful. Thanks to the amazing jQuery Validity plug in, input validation can be really slick, easy and robust enough to work any any scenario. I specifically like the Validity plugin because it supports jQuery AJAX input validation. Other input validation implementations that I have worked with require a form post to take place. However, if you are using jQuery.ajax methods then there isn’t a form and you need to validate the formless input. [Read More] Aaron Schniederhttp://www.churchofficeonline.com

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  • Part 5, Moving Forum threads from CommunityServer to DotNetNuke

    - by Chris Hammond
    This is the fifth post in a series of blog posts about converting from CommunityServer to DotNetNuke. A brief background: I had a number of websites running on CommunityServer 2.1, I decided it was finally time to ditch CommunityServer due to the change in their licensing model and pricing that made it not good for the small guy. This series of blog posts is about how to convert your CommunityServer based sites to DotNetNuke . Previous Posts: Part 1: An Introduction Part 2: DotNetNuke Installation...(read more)

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  • MammothVPS Signup Video

    - by stefan.sedich
    We have posted a video showing the process involved in signing up for a VPS at MammothVPS check it out. As a special offer if you use the voucher code 'VIDEO' you can signup and receive 10% off for the first 12 months of your service. Cheers Stefan

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  • Working with Joins in LINQ

    - by vik20000in
    While working with data most of the time we have to work with relation between different lists of data. Many a times we want to fetch data from both the list at once. This requires us to make different kind of joins between the lists of data. LINQ support different kinds of join Inner Join     List<Customer> customers = GetCustomerList();     List<Supplier> suppliers = GetSupplierList();      var custSupJoin =         from sup in suppliers         join cust in customers on sup.Country equals cust.Country         select new { Country = sup.Country, SupplierName = sup.SupplierName, CustomerName = cust.CompanyName }; Group Join – where By the joined dataset is also grouped.     List<Customer> customers = GetCustomerList();     List<Supplier> suppliers = GetSupplierList();      var custSupQuery =         from sup in suppliers         join cust in customers on sup.Country equals cust.Country into cs         select new { Key = sup.Country, Items = cs }; We can also work with the Left outer join in LINQ like this.     List<Customer> customers = GetCustomerList();     List<Supplier> suppliers = GetSupplierList();      var supplierCusts =         from sup in suppliers         join cust in customers on sup.Country equals cust.Country into cs         from c in cs.DefaultIfEmpty()  // DefaultIfEmpty preserves left-hand elements that have no matches on the right side         orderby sup.SupplierName         select new { Country = sup.Country, CompanyName = c == null ? "(No customers)" : c.CompanyName,                      SupplierName = sup.SupplierName};Vikram

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