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  • The Presentation Secrets of Steve Jobs

    - by guybarrette
    A few years go, I got interested in presentation styles after reading Cliff Atkinson’s Beyond Bullet Points book.  At that time, it was obvious that the Microsoft presentation culture was kind of missing the point by having far too many bullet points. I recently picked up Carmine Gallo’s The Presentation Secrets of Steve Jobs.  I enjoyed this short read (238 pages) book full of presentation tips.  The best advise that I got from reading this book is that you must have an antagonist in your presentation.  This will help the audience visualize and understand the problem (antagonist) and the solution (what you present).  When presenting a technical topic, it is easy to forget to explain what problem is being solved by using this new technology/technique/pattern/API. This is a great read for anyone giving presentations, technical or not.     var addthis_pub="guybarrette";

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  • Amazon CloudFront Cache Invalidation – Fill out the Survey!

    - by joelvarty
    Amazon have come up with a survey regarding how cache can be invalidated on object stored in their CloudFront servers. http://survey.amazonwebservices.com/survey/s?s=1369   This is a key feature for Agility CMS, and for a lot of other applications. If it’s important to you, I suggest you spend a few minutes and fill it out. more later - joel

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  • [WP7] How to decompile WP7 assemblies

    - by Benjamin Roux
    The other day I wanted to check the source code of the ScrollViewer of WP7. I started Reflector (profit while its still free) and I opened the System.Windows.dll assembly located at C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\Silverlight\v4.0\Profile\WindowsPhone. When Reflector did the job I was surprised to see that all the methods/properties were empty ! After some investigations, I found out that these assemblys are used by Visual Studio for the Intelisense (among others) and so, for develoment. The thing is I still couldn’t check the ScrollViewer’s source code. Finally after new investigations, I discovered a link on the XDA forum which provide the WP7 emulator dump. I downloaded it and decompiled the GAC_System.Windows_v2_0_5_0_cneutral_1.dll assembly located this time at /SYS/SILVERLIGHT. Et voila, the ScrollViewer’s source code is available. Hope this helps.

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  • Programmatically reuse Dynamics CRM 4 icons

    - by gperera
    The team that wrote the dynamics crm sdk help rocks! I wanted to display the same crm icons on our time tracking application for consistency, so I opened up the sdk help file, searched for 'icon', ignored all the sitemap/isv config entries since I know I want to get these icons programatically, about half way down the search results I see 'organizationui', sure enough that contains the 16x16 (gridicon), 32x32 (outlookshortcuticon) and 66x48 (largeentityicon) icons!To get all the entities, execute a retrieve multiple request. RetrieveMultipleRequest request = new RetrieveMultipleRequest{    Query = new QueryExpression    {        EntityName = "organizationui",        ColumnSet = new ColumnSet(new[] { "objecttypecode", "formxml", "gridicon" }),    }}; var response = sdk.Execute(request) as RetrieveMultipleResponse;Now you have all the entities and icons, here's the tricky part, all the custom entities in crm store the icons inside gridicon, outlookshortcuticon and largeentityicon attributes, the built-in entity icons are stored inside the /_imgs/ folder with the format of /_imgs/ico_16_xxxx.gif (gridicon), with xxxx being the entity type code. The entity type code is not stored inside an attribute of organizationui, however you can get it by looking at the formxml attribute objecttypecode xml attribute. response.BusinessEntityCollection.BusinessEntities.ToList()    .Cast<organizationui>().ToList()    .ForEach(a =>    {        try        {            // easy way to check if it's a custom entity            if (!string.IsNullOrEmpty(a.gridicon))            {                byte[] gif = Convert.FromBase64String(a.gridicon);            }            else            {                // built-in entity                if (!string.IsNullOrEmpty(a.formxml))                {                    int start = a.formxml.IndexOf("objecttypecode=\"") + 16;                    int end = a.formxml.IndexOf("\"", start);                     // found the entity type code                    string code = a.formxml.Substring(start, end - start);                    string url = string.Format("/_imgs/ico_16_{0}.gif", code);Enjoy!

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  • Joins in LINQ to SQL

    - by rajbk
    The following post shows how to write different types of joins in LINQ to SQL. I am using the Northwind database and LINQ to SQL for these examples. NorthwindDataContext dataContext = new NorthwindDataContext(); Inner Join var q1 = from c in dataContext.Customers join o in dataContext.Orders on c.CustomerID equals o.CustomerID select new { c.CustomerID, c.ContactName, o.OrderID, o.OrderDate }; SELECT [t0].[CustomerID], [t0].[ContactName], [t1].[OrderID], [t1].[OrderDate]FROM [dbo].[Customers] AS [t0]INNER JOIN [dbo].[Orders] AS [t1] ON [t0].[CustomerID] = [t1].[CustomerID] Left Join var q2 = from c in dataContext.Customers join o in dataContext.Orders on c.CustomerID equals o.CustomerID into g from a in g.DefaultIfEmpty() select new { c.CustomerID, c.ContactName, a.OrderID, a.OrderDate }; SELECT [t0].[CustomerID], [t0].[ContactName], [t1].[OrderID] AS [OrderID], [t1].[OrderDate] AS [OrderDate]FROM [dbo].[Customers] AS [t0]LEFT OUTER JOIN [dbo].[Orders] AS [t1] ON [t0].[CustomerID] = [t1].[CustomerID] Inner Join on multiple //We mark our anonymous type properties as a and b otherwise//we get the compiler error "Type inferencce failed in the call to 'Join’var q3 = from c in dataContext.Customers join o in dataContext.Orders on new { a = c.CustomerID, b = c.Country } equals new { a = o.CustomerID, b = "USA" } select new { c.CustomerID, c.ContactName, o.OrderID, o.OrderDate }; SELECT [t0].[CustomerID], [t0].[ContactName], [t1].[OrderID], [t1].[OrderDate]FROM [dbo].[Customers] AS [t0]INNER JOIN [dbo].[Orders] AS [t1] ON ([t0].[CustomerID] = [t1].[CustomerID]) AND ([t0].[Country] = @p0) Inner Join on multiple with ‘OR’ clause var q4 = from c in dataContext.Customers from o in dataContext.Orders.Where(a => a.CustomerID == c.CustomerID || c.Country == "USA") select new { c.CustomerID, c.ContactName, o.OrderID, o.OrderDate }; SELECT [t0].[CustomerID], [t0].[ContactName], [t1].[OrderID], [t1].[OrderDate]FROM [dbo].[Customers] AS [t0], [dbo].[Orders] AS [t1]WHERE ([t1].[CustomerID] = [t0].[CustomerID]) OR ([t0].[Country] = @p0) Left Join on multiple with ‘OR’ clause var q5 = from c in dataContext.Customers from o in dataContext.Orders.Where(a => a.CustomerID == c.CustomerID || c.Country == "USA").DefaultIfEmpty() select new { c.CustomerID, c.ContactName, o.OrderID, o.OrderDate }; SELECT [t0].[CustomerID], [t0].[ContactName], [t1].[OrderID] AS [OrderID], [t1].[OrderDate] AS [OrderDate]FROM [dbo].[Customers] AS [t0]LEFT OUTER JOIN [dbo].[Orders] AS [t1] ON ([t1].[CustomerID] = [t0].[CustomerID]) OR ([t0].[Country] = @p0)

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  • Exception:Cannot Start your application.The Workgroup information file is missing or opened exclusiv

    - by Jeev
    We were getting this error when trying   to connect  to a password protected access file. This is what the connection string looked likestring conString =@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source="Path to your access file";User Id=;Password=password";To fix the issue this is what we didstring conString =@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source="Path to your access file";Jet OLEDB:Database Password=password";  We removed the User id and changed the password to Jet OLEDB:Database Password Hope this helps someone   

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  • Testing Mobile Websites with Adobe Shadow

    - by dwahlin
    It’s no surprise that mobile development is all the rage these days. With all of the new mobile devices being released nearly every day the ability for developers to deliver mobile solutions is more important than ever. Nearly every developer or company I’ve talked to recently about mobile development in training classes, at conferences, and on consulting projects says that they need to find a solution to get existing websites into the mobile space. Although there are several different frameworks out there that can be used such as jQuery Mobile, Sencha Touch, jQTouch, and others, how do you test how your site renders on iOS, Android, Blackberry, Windows Phone, and the variety of mobile form factors out there? Although there are different virtual solutions that can be used including Electric Plum for iOS, emulators, browser plugins for resizing the laptop/desktop browser, and more, at some point you need to test on as many physical devices as possible. This can be extremely challenging and quite time consuming though especially when you consider that you have to manually enter URLs into devices and click links on each one to drill-down into sites. Adobe Labs just released a product called Adobe Shadow (thanks to Kurt Sprinzl for letting me know about it) that significantly simplifies testing sites on physical devices, debugging problems you find, and even making live modifications to HTML and CSS content while viewing a site on the device to see how rendering changes. You can view a page in your laptop/desktop browser and have it automatically pushed to all of your devices without actually touching the device (a huge time saver). See a problem with a device? Locate it using the free Chrome extension, pull up inspection tools (based on the Chrome Developer tools) and make live changes through Chrome that appear on the respective device so that it’s easy to identify how problems can be resolved. I’ve been using Adobe Shadow and am very impressed with the amount of time saved and the different features that it offers. In the rest of the post I’ll walk through how to get it installed, get it started, and use it to view and debug pages.   Getting Adobe Shadow Installed The following steps can be used to get Adobe Shadow installed: 1. Download and install Adobe Shadow on your laptop/desktop 2. Install the Adobe Shadow extension for Chrome 3. Install the Adobe Shadow app on all of your devices (you can find it in various app stores) 4. Connect your devices to Wifi. Make sure they’re on the same network that your laptop/desktop machine is on   Getting Adobe Shadow Started Once Adobe Shadow is installed, you’ll need to get it running on your laptop/desktop and on all your mobile devices. The following steps walk through that process: 1. Start the Adobe Shadow application on your laptop/desktop 2. Start the Adobe Shadow app on each of your mobile devices 3. Locate the laptop/desktop name in the list that’s shown on each mobile device: 4. Select the laptop/desktop name and a passcode will be shown: 5. Open the Adobe Shadow Chrome extension on the laptop/desktop and enter the passcode for the given device: Using Adobe Shadow to View and Modify Pages Once Adobe Shadow is up and running on your laptop/desktop and on all of your mobile devices you can navigate to a page in Chrome on the laptop/desktop and it will automatically be pushed out to all connected mobile devices. If you have 5 mobile devices setup they’ll all navigate to the page displayed in Chrome (pretty awesome!). This makes it super easy to see how a given page looks on your iPad, Android device, etc. without having to touch the device itself. If you find a problem with a page on a device you can select the device in the Chrome Adobe Shadow extension on your laptop/desktop and select the remote inspector icon (it’s the < > icon): This will pull up the Adobe Shadow remote debugging window which contains the standard Chrome Developer tool tabs such as Elements, Resources, Network, etc. Click on the Elements tab to see the HTML rendered for the target device and then drill into the respective HTML content, CSS styles, etc. As HTML elements are selected in the Adobe Shadow debugging tool they’ll be highlighted on the device itself just like they would if you were debugging a page directly in Chrome with the developer tools. Here’s an example from my Android device that shows how the page looks on the device as I select different HTML elements on the laptop/desktop: Conclusion I’m really impressed with what I’ve to this point from Adobe Shadow. Controlling pages that display on devices directly from my laptop/desktop is a big time saver and the ability to remotely see changes made through the Chrome Developer Tools (on my laptop/desktop) really pushes the tool over the top. If you’re developing mobile applications it’s definitely something to check out. It’s currently free to download and use. For additional details check out the video below:  

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  • Analysis of nopCommerce

    - by chanva
    More and more medium-sized and small enterprises would like eCommerce website to sell their products or services.  Free and open source project should be the first choice.  I found out the nopCommerce is a good option, you could see the detailed analysis.

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  • Transactions in LINQ to SQL applications

    - by nikolaosk
    In this post I would like to talk about LINQ to SQL and transactions.When I have a LINQ to SQL class I always get asked this question, "How does LINQ treat Transactions?". When we use the DeleteOnSubmit() method or the InsertOnSubmit() method, all of those commands at some point are translated into T-SQL commands and then are executed against the database. All of those commands live in transactions and they follow the basic rules of transaction processing. They do succeed together or fail together...(read more)

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  • NHibernate 2 Beginner's Guide Book

    - by Ricardo Peres
    Packt Publishing has recently released a new book on NHibernate: NHibernate 2 Beginner's Guide, by Aaron Cure. I am now reading the final version, which Packt Publishing was kind enough to provide me, and I will soon write about it. I can tell you for now that Fabio Maulo was one of the reviewers, which certainly raises the expectations. In the meanwhile, there's a free chapter you can download, which hopefully will get you interested in it; you can get it from here.

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  • Visual Studio IntelliSense for URL Rewrite

    - by OWScott
    Visual Studio doesn’t have IntelliSense support for URL Rewrite by default.  This isn’t a show stopper since it doesn’t result in stop errors. However, it’s nice to have full IntelliSense support and to get rid of the warnings for URL Rewrite rules. RuslanY has released a Visual Studio schema update for URL Rewrite 2.0 which is available as a free quick download.  The installation instructions (they are quick and easy) can be found here, which also include the schema for URL Rewrite 1.1.   The install takes effect immediately without restarting Visual Studio. A side question commonly comes up.  Can you get URL Rewrite support for Visual Studio Web Server (aka Cassini).  The answer is no.  To get URL Rewrite support in your development environment, use IIS7.  You can set your Visual Studio projects to use IIS7 though, so you can have full debug, F5 or Ctrl-F5 support for IIS.

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  • Changing the Module title in DotNetNuke on the Fly

    - by grant.barrington
    This is an extremely short post, buy hopefully it will help others in the situation. (Also if I need to find it again I know where to look) We have recently completed a project using DotNetNuke as our base. The project was for a B2B portal using Microsoft Dynamics NAV as our back-end. We had a requirement where we wanted to change the title of a Module on the fly. This ended up being pretty easy from our module. In our Page_Load event all we had to do was the following. Control ctl = DotNetNuke.Common.Globals.FindControlRecursiveDown(this.ContainerControl, "lblTitle"); if ((ctl != null)) { ((Label)ctl).Text += "- Text Added"; } Thats it. All we do it go up 1 control (this.ContainerControl) and look for the Label called "lblTitle". We then append text to the existing Module title.

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  • Invariant code contracts – using class-wide contracts

    - by DigiMortal
    It is possible to define invariant code contracts for classes. Invariant contracts should always hold true whatever member of class is called. In this posting I will show you how to use invariant code contracts so you understand how they work and how they should be tested. This is my randomizer class I am using to demonstrate code contracts. I added one method for invariant code contracts. Currently there is one contract that makes sure that random number generator is not null. public class Randomizer {     private IRandomGenerator _generator;       private Randomizer() { }       public Randomizer(IRandomGenerator generator)     {         _generator = generator;     }       public int GetRandomFromRangeContracted(int min, int max)     {         Contract.Requires<ArgumentOutOfRangeException>(             min < max,             "Min must be less than max"         );           Contract.Ensures(             Contract.Result<int>() >= min &&             Contract.Result<int>() <= max,             "Return value is out of range"         );           return _generator.Next(min, max);     }       [ContractInvariantMethod]     private void ObjectInvariant()     {         Contract.Invariant(_generator != null);     } } Invariant code contracts are define in methods that have ContractInvariantMethod attribute. Some notes: It is good idea to define invariant methods as private. Don’t call invariant methods from your code because code contracts system does not allow it. Invariant methods are defined only as place where you can keep invariant contracts. Invariant methods are called only when call to some class member is made! The last note means that having invariant method and creating Randomizer object with null as argument does not automatically generate exception. We have to call at least one method from Randomizer class. Here is the test for generator. You can find more about contracted code testing from my posting Code Contracts: Unit testing contracted code. There is also explained why the exception handling in test is like it is. [TestMethod] [ExpectedException(typeof(Exception))] public void Should_fail_if_generator_is_null() {     try     {         var randomizer = new Randomizer(null);         randomizer.GetRandomFromRangeContracted(1, 4);     }     catch (Exception ex)     {         throw new Exception(ex.Message, ex);     } } Try out this code – with unit tests or with test application to see that invariant contracts are checked as soon as you call some member of Randomizer class.

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  • NHibernate Pitfalls: Fetch and Paging

    - by Ricardo Peres
    This is part of a series of posts about NHibernate Pitfalls. See the entire collection here. NHibernate allows you to force loading additional references (many to one, one to one) or collections (one to many, many to many) in a query. You must know, however, that this is incompatible with paging. It’s easy to see why. Let’s say you want to get 5 products starting on the fifth, you can issue the following LINQ query: 1: session.Query<Product>().Take(5).Skip(5).ToList(); Will product this SQL in SQL Server: 1: SELECT 2: TOP (@p0) product1_4_, 3: name4_, 4: price4_ 5: FROM 6: (select 7: product0_.product_id as product1_4_, 8: product0_.name as name4_, 9: product0_.price as price4_, 10: ROW_NUMBER() OVER( 11: ORDER BY 12: CURRENT_TIMESTAMP) as __hibernate_sort_row 13: from 14: product product0_) as query 15: WHERE 16: query.__hibernate_sort_row > @p1 17: ORDER BY If, however, you wanted to bring as well the associated order details, you might be tempted to try this: 1: session.Query<Product>().Fetch(x => x.OrderDetails).Take(5).Skip(5).ToList(); Which, in turn, will produce this SQL: 1: SELECT 2: TOP (@p0) product1_4_0_, 3: order1_3_1_, 4: name4_0_, 5: price4_0_, 6: order2_3_1_, 7: product3_3_1_, 8: quantity3_1_, 9: product3_0__, 10: order1_0__ 11: FROM 12: (select 13: product0_.product_id as product1_4_0_, 14: orderdetai1_.order_detail_id as order1_3_1_, 15: product0_.name as name4_0_, 16: product0_.price as price4_0_, 17: orderdetai1_.order_id as order2_3_1_, 18: orderdetai1_.product_id as product3_3_1_, 19: orderdetai1_.quantity as quantity3_1_, 20: orderdetai1_.product_id as product3_0__, 21: orderdetai1_.order_detail_id as order1_0__, 22: ROW_NUMBER() OVER( 23: ORDER BY 24: CURRENT_TIMESTAMP) as __hibernate_sort_row 25: from 26: product product0_ 27: left outer join 28: order_detail orderdetai1_ 29: on product0_.product_id=orderdetai1_.product_id 30: ) as query 31: WHERE 32: query.__hibernate_sort_row > @p1 33: ORDER BY 34: query.__hibernate_sort_row; However, because of the JOIN, what happens is that, if your products have more than one order details, you will get several records – one per order detail – per product, which means that pagination will be broken. There is an workaround, which forces you to write your LINQ query in another way: 1: session.Query<OrderDetail>().Where(x => session.Query<Product>().Select(y => y.ProductId).Take(5).Skip(5).Contains(x.Product.ProductId)).Select(x => x.Product).ToList() Or, using HQL: 1: session.CreateQuery("select od.Product from OrderDetail od where od.Product.ProductId in (select p.ProductId from Product p skip 5 take 5)").List<Product>(); The generated SQL will then be: 1: select 2: product1_.product_id as product1_4_, 3: product1_.name as name4_, 4: product1_.price as price4_ 5: from 6: order_detail orderdetai0_ 7: left outer join 8: product product1_ 9: on orderdetai0_.product_id=product1_.product_id 10: where 11: orderdetai0_.product_id in ( 12: SELECT 13: TOP (@p0) product_id 14: FROM 15: (select 16: product2_.product_id, 17: ROW_NUMBER() OVER( 18: ORDER BY 19: CURRENT_TIMESTAMP) as __hibernate_sort_row 20: from 21: product product2_) as query 22: WHERE 23: query.__hibernate_sort_row > @p1 24: ORDER BY 25: query.__hibernate_sort_row); Which will get you what you want: for 5 products, all of their order details.

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  • Mercurial Conversion from Team Foundation Server

    - by mhawley
    I’m using Twitter. Follow me @matthawley One of my many (almost) daily tasks when working on the CodePlex platform since releasing Mercurial as a supported version control system, is converting projects from Team Foundation Server (TFS) to Mercurial. I'm happy to say that of all the conversions I have done since mid-January, the success rate of migrating full source history is about 95%. To get to this success point, I have had to learn and refine several techniques utilizing a few different tools… (read more)

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  • Don’t miss a thing when you going the Mix, DevConnections, Tech-ed or PDC conferences.

    - by albertpascual
    Besides all sessions and courses found in the agenda there are events happening around that you will miss, those events are being published and index in this iPhone & iPad app for you to find the parties or external events around the conference that otherwise you will miss. Download it for free here if you are going to the Mix, DevConnections, TechEd or Pdc this year. http://itunes.apple.com/us/app/eventmeetup/id421597442?mt=8&ls=1 Cheers Al

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  • Tellago 2011: Dwight, Chris and Don are MVPs

    - by gsusx
    It’s been a great start of 2011. Tellago’s Dwight Goins has been awarded as a Microsoft BizTalk Server MVP for 2011. I’ve always said that Dwight should have been an MVP a long time ago. His contributions to the BizTalk Server community are nothing but remarkable. In addition to Dwight, my colleagues Don Demsak and Chris Love also renewed their respective MVP award. A few other of us are up for renewal later in the year. As a recognition to Dwight’s award, we have made him the designated doorman...(read more)

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  • Is recursion really bad?

    - by dotneteer
    After my previous post about the stack space, it appears that there is perception from the feedback that recursion is bad and we should avoid deep recursion. After writing a compiler, I know that the modern computer and compiler are complex enough and one cannot automatically assume that a hand crafted code would out-perform the compiler optimization. The only way is to do some prototype to find out. So why recursive code may not perform as well? Compilers place frames on a stack. In additional to arguments and local variables, compiles also need to place frame and program pointers on the frame, resulting in overheads. So why hand-crafted code may not performance as well? The stack used by a compiler is a simpler data structure and can grow and shrink cleanly. To replace recursion with out own stack, our stack is allocated in the heap that is far more complicated to manage. There could be overhead as well if the compiler needs to mark objects for garbage collection. Compiler also needs to worry about the memory fragmentation. Then there is additional complexity: CPUs have registers and multiple levels of cache. Register access is a few times faster than in-CPU cache access and is a few 10s times than on-board memory access. So it is up to the OS and compiler to maximize the use of register and in-CPU cache. For my particular problem, I did an experiment to rewrite my c# version of recursive code with a loop and stack approach. So here are the outcomes of the two approaches:   Recursive call Loop and Stack Lines of code for the algorithm 17 46 Speed Baseline 3% faster Readability Clean Far more complex So at the end, I was able to achieve 3% better performance with other drawbacks. My message is never assuming your sophisticated approach would automatically work out better than a simpler approach with a modern computer and compiler. Gage carefully before committing to a more complex approach.

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  • LINQ: Single vs. First

    - by Paulo Morgado
    I’ve witnessed and been involved in several discussions around the correctness or usefulness of the Single method in the LINQ API. The most common argument is that you are querying for the first element on the result set and an exception will be thrown if there’s more than one element. The First method should be used instead, because it doesn’t throw if the result set has more than one item. Although the documentation for Single states that it returns a single, specific element of a sequence of values, it actually returns THE single, specific element of a sequence of ONE value. One you use the Single method in your code you are asserting that your query will result in a scalar result instead of a result set of arbitrary length. On the other hand, the documentation for First states that it returns the first element of a sequence of arbitrary length. Imagine you want to catch a taxi. You go the the taxi line and catch the FIRST one, no matter how many are there. On the other hand, if you go the the parking lot to get your car, you want the SINGLE one specific car that’s yours. If your “query” “returns” more than one car, it’s an exception. Either because it “returned” not only your car or you happen to have more than one car in that parking lot. In either case, you can only drive one car at once and you’ll need to refine your “query”.

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  • Windows Azure PowerShell for Node.js

    - by shiju
    The Windows Azure PowerShell for Node.js is a command-line tool that  allows the Node developers to build and deploy Node.js apps in Windows Azure using Windows PowerShell cmdlets. Using Windows Azure PowerShell for Node.js, you can develop, test, deploy and manage Node based hosted service in Windows Azure. For getting the PowerShell for Node.js, click All Programs, Windows Azure SDK Node.js and run  Windows Azure PowerShell for Node.js, as Administrator. The followings are the few PowerShell cmdlets that lets you to work with Node.js apps in Windows Azure Create New Hosted Service New-AzureService <HostedServiceName> The below cmdlet will created a Windows Aazure hosted service named NodeOnAzure in the folder C:\nodejs and this will also create ServiceConfiguration.Cloud.cscfg, ServiceConfiguration.Local.cscfg and ServiceDefinition.csdef and deploymentSettings.json files for the hosted service. PS C:\nodejs> New-AzureService NodeOnAzure The below picture shows the files after creating the hosted service Create Web Role Add-AzureNodeWebRole <RoleName> The following cmdlet will create a hosted service named MyNodeApp along with web.config file. PS C:\nodejs\NodeOnAzure> Add-AzureNodeWebRole MyNodeApp The below picture shows the files after creating the web role app. Install Node Module npm install <NodeModule> The following command will install Node Module Express onto your web role app. PS C:\nodejs\NodeOnAzure\MyNodeApp> npm install Express Run Windows Azure Apps Locally in the Emulator Start-AzureEmulator -launch The following cmdlet will create a local package and run Windows Azure app locally in the emulator PS C:\nodejs\NodeOnAzure\MyNodeApp> Start-AzureEmulator -launch Stop Windows Azure Emulator Stop-AzureEmulator The following cmdlet will stop your Windows Azure in the emulator. PS C:\nodejs\NodeOnAzure\MyNodeApp> Stop-AzureEmulator Download Windows Azure Publishing Settings Get-AzurePublishSettings The following cmdlet will redirect to Windows Azure portal where we can download Windows Azure publish settings PS C:\nodejs\NodeOnAzure\MyNodeApp> Get-AzurePublishSettings Import Windows Azure Publishing Settings Import-AzurePublishSettings <Location of .publishSettings file> The following cmdlet will import the publish settings file from the location c:\nodejs PS C:\nodejs\NodeOnAzure\MyNodeApp>  Import-AzurePublishSettings c:\nodejs\shijuvar.publishSettings Publish Apps to Windows Azure Publish-AzureService –name <Name> –location <Location of Data centre> The following cmdlet will publish the app to Windows Azure with name “NodeOnAzure” in the location Southeast Asia. Please keep in mind that the service name should be unique. PS C:\nodejs\NodeOnAzure\MyNodeApp> Publish-AzureService –name NodeonAzure –location "Southeast Asia” –launch Stop Windows Azure Service Stop-AzureService The following cmdlet will stop your service which you have deployed previously. PS C:\nodejs\NodeOnAzure\MyNodeApp> Stop-AzureService Remove Windows Azure Service Remove-AzureService The following cmdlet will remove your service from Windows Azure. PS C:\nodejs\NodeOnAzure\MyNodeApp> Remove-AzureService Quick Summary for PowerShell cmdlets Create  a new Hosted Service New-AzureService <HostedServiceName> Create a Web Role Add-AzureNodeWebRole <RoleName> Install Node Module npm install <NodeModule> Running Windows Azure Apps Locally in Emulator Start-AzureEmulator -launch Stop Windows Azure Emulator Stop-AzureEmulator Download Windows Azure Publishing Settings Get-AzurePublishSettings Import Windows Azure Publishing Settings Import-AzurePublishSettings <Location of .publishSettings file> Publish Apps to Windows Azure Publish-AzureService –name <Name> –location <Location of Data centre> Stop Windows Azure Service Stop-AzureService Remove Windows Azure Service Remove-AzureService

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  • Hosting WCF service in Windows Service

    - by DigiMortal
    When building Windows services we often need a way to communicate with them. The natural way to communicate to service is to send signals to it. But this is very limited communication. Usually we need more powerful communication mechanisms with services. In this posting I will show you how to use service-hosted WCF web service to communicate with Windows service. Create Windows service Suppose you have Windows service created and service class is named as MyWindowsService. This is new service and all we have is default code that Visual Studio generates. Create WCF service Add reference to System.ServiceModel assembly to Windows service project and add new interface called IMyService. This interface defines our service contracts. [ServiceContract] public interface IMyService {     [OperationContract]     string SayHello(int value); } We keep this service simple so it is easy for you to follow the code. Now let’s add service implementation: [ServiceBehavior(InstanceContextMode=InstanceContextMode.Single)] public class MyService : IMyService {     public string SayHello(int value)     {         return string.Format("Hello, : {0}", value);     } } With ServiceBehavior attribute we say that we need only one instance of WCF service to serve all requests. Usually this is more than enough for us. Hosting WCF service in Windows Service Now it’s time to host our WCF service and make it available in Windows service. Here is the code in my Windows service: public partial class MyWindowsService : ServiceBase {     private ServiceHost _host;     private MyService _server;       public MyWindowsService()     {         InitializeComponent();     }       protected override void OnStart(string[] args)     {         _server = new MyService();         _host = new ServiceHost(_server);         _host.Open();     }       protected override void OnStop()     {         _host.Close();     } } Our Windows service now hosts our WCF service. WCF service will be available when Windows service is started and it is taken down when Windows service stops. Configuring WCF service To make WCF service usable we need to configure it. Add app.config file to your Windows service project and paste the following XML there: <system.serviceModel>   <serviceHostingEnvironment aspNetCompatibilityEnabled="true" />   <services>     <service name="MyWindowsService.MyService" behaviorConfiguration="def">       <host>         <baseAddresses>           <add baseAddress="http://localhost:8732/MyService/"/>         </baseAddresses>       </host>       <endpoint address="" binding="wsHttpBinding" contract="MyWindowsService.IMyService">       </endpoint>       <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>     </service>   </services>   <behaviors>     <serviceBehaviors>       <behavior name="def">         <serviceMetadata httpGetEnabled="True"/>         <serviceDebug includeExceptionDetailInFaults="True"/>       </behavior>     </serviceBehaviors>   </behaviors> </system.serviceModel> Now you are ready to test your service. Install Windows service and start it. Open your browser and open the following address: http://localhost:8732/MyService/ You should see your WCF service page now. Conclusion WCF is not only web applications fun. You can use WCF also as self-hosted service. Windows services that lack good communication possibilities can be saved by using WCF self-hosted service as it is the best way to talk to service. We can also revert the context and say that Windows service is good host for our WCF service.

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