geeks with blogs - Page 165

BaltoMSDN and Richmond Code Camp

- by Steve Michelotti

Tomorrow (5/19/2010) I’ll be at BaltoMSDN presenting C# 4.0. Also, on Saturday I’ll be presenting MVC 2 at the Richmond Code Camp. Hope to see you there!

The tale of how the PowerShell CmdLets got installed with Azure SDK 1.4

I installed the Azure SDK 1.4 while rebuilding my laptop and ran the installation for the Windows Azure Service Management PowerShell CmdLets. Kicked off the installation script for the WASM PowerShell CmdLets by locating the path to which WASM PowerShell CmdLets was deployed to. Double clicked the startHere command. It will then open the WASM installation dialog. Click Next. Click Next. Notice the red x next to the Azure SDK 1.3, the problem is I have SDK 1.4 Here is the workaround, I go back to the location of the deployed WASM sources. Go into the setup path, then scripts>dependencies>check. Now, locate the CheckAzureSDK.ps1 file, and right-click, then edit. This is the content in the ps1 file, it check for the specific version of the Azure SDK, in this case, it is looking for version 1.3.11133.0038. We need for it to check for version 1.4.20227.1419 Now, save your ps1 file, go back to the open WASM install dialog, and click rescan. This time it should pass, then click next. A Command prompt window will appear, click any key. This completes the installation, click Close.

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C#/.NET Little Wonders: Interlocked Read() and Exchange()

- by James Michael Hare

Once again, in this series of posts I look at the parts of the .NET Framework that may seem trivial, but can help improve your code by making it easier to write and maintain. The index of all my past little wonders posts can be found here. Last time we discussed the Interlocked class and its Add(), Increment(), and Decrement() methods which are all useful for updating a value atomically by adding (or subtracting). However, this begs the question of how do we set and read those values atomically as well? Read() – Read a value atomically Let’s begin by examining the following code: 1: public class Incrementor 2: { 3: private long _value = 0; 4: 5: public long Value { get { return _value; } } 6: 7: public void Increment() 8: { 9: Interlocked.Increment(ref _value); 10: } 11: } 12: It uses an interlocked increment, as we discuss in my previous post (here), so we know that the increment will be thread-safe. But, to realize what’s potentially wrong we have to know a bit about how atomic reads are in 32 bit and 64 bit .NET environments. When you are dealing with an item smaller or equal to the system word size (such as an int on a 32 bit system or a long on a 64 bit system) then the read is generally atomic, because it can grab all of the bits needed at once. However, when dealing with something larger than the system word size (reading a long on a 32 bit system for example), it cannot grab the whole value at once, which can lead to some problems since this read isn’t atomic. For example, this means that on a 32 bit system we may read one half of the long before another thread increments the value, and the other half of it after the increment. To protect us from reading an invalid value in this manner, we can do an Interlocked.Read() to force the read to be atomic (of course, you’d want to make sure any writes or increments are atomic also): 1: public class Incrementor 2: { 3: private long _value = 0; 4: 5: public long Value 6: { 7: get { return Interlocked.Read(ref _value); } 8: } 9: 10: public void Increment() 11: { 12: Interlocked.Increment(ref _value); 13: } 14: } Now we are guaranteed that we will read the 64 bit value atomically on a 32 bit system, thus ensuring our thread safety (assuming all other reads, writes, increments, etc. are likewise protected). Note that as stated before, and according to the MSDN (here), it isn’t strictly necessary to use Interlocked.Read() for reading 64 bit values on 64 bit systems, but for those still working in 32 bit environments, it comes in handy when dealing with long atomically. Exchange() – Exchanges two values atomically Exchange() lets us store a new value in the given location (the ref parameter) and return the old value as a result. So just as Read() allows us to read atomically, one use of Exchange() is to write values atomically. For example, if we wanted to add a Reset() method to our Incrementor, we could do something like this: 1: public void Reset() 2: { 3: _value = 0; 4: } But the assignment wouldn’t be atomic on 32 bit systems, since the word size is 32 bits and the variable is a long (64 bits). Thus our assignment could have only set half the value when a threaded read or increment happens, which would put us in a bad state. So instead, we could write Reset() like this: 1: public void Reset() 2: { 3: Interlocked.Exchange(ref _value, 0); 4: } And we’d be safe again on a 32 bit system. But this isn’t the only reason Exchange() is valuable. The key comes in realizing that Exchange() doesn’t just set a new value, it returns the old as well in an atomic step. Hence the name “exchange”: you are swapping the value to set with the stored value. So why would we want to do this? Well, anytime you want to set a value and take action based on the previous value. An example of this might be a scheme where you have several tasks, and during every so often, each of the tasks may nominate themselves to do some administrative chore. Perhaps you don’t want to make this thread dedicated for whatever reason, but want to be robust enough to let any of the threads that isn’t currently occupied nominate itself for the job. An easy and lightweight way to do this would be to have a long representing whether someone has acquired the “election” or not. So a 0 would indicate no one has been elected and 1 would indicate someone has been elected. We could then base our nomination strategy as follows: every so often, a thread will attempt an Interlocked.Exchange() on the long and with a value of 1. The first thread to do so will set it to a 1 and return back the old value of 0. We can use this to show that they were the first to nominate and be chosen are thus “in charge”. Anyone who nominates after that will attempt the same Exchange() but will get back a value of 1, which indicates that someone already had set it to a 1 before them, thus they are not elected. Then, the only other step we need take is to remember to release the election flag once the elected thread accomplishes its task, which we’d do by setting the value back to 0. In this way, the next thread to nominate with Exchange() will get back the 0 letting them know they are the new elected nominee. Such code might look like this: 1: public class Nominator 2: { 3: private long _nomination = 0; 4: public bool Elect() 5: { 6: return Interlocked.Exchange(ref _nomination, 1) == 0; 7: } 8: public bool Release() 9: { 10: return Interlocked.Exchange(ref _nomination, 0) == 1; 11: } 12: } There’s many ways to do this, of course, but you get the idea. Running 5 threads doing some “sleep” work might look like this: 1: var nominator = new Nominator(); 2: var random = new Random(); 3: Parallel.For(0, 5, i => 4: { 5: 6: for (int j = 0; j < _iterations; ++j) 7: { 8: if (nominator.Elect()) 9: { 10: // elected 11: Console.WriteLine("Elected nominee " + i); 12: Thread.Sleep(random.Next(100, 5000)); 13: nominator.Release(); 14: } 15: else 16: { 17: // not elected 18: Console.WriteLine("Did not elect nominee " + i); 19: } 20: // sleep before check again 21: Thread.Sleep(1000); 22: } 23: }); And would spit out results like: 1: Elected nominee 0 2: Did not elect nominee 2 3: Did not elect nominee 1 4: Did not elect nominee 4 5: Did not elect nominee 3 6: Did not elect nominee 3 7: Did not elect nominee 1 8: Did not elect nominee 2 9: Did not elect nominee 4 10: Elected nominee 3 11: Did not elect nominee 2 12: Did not elect nominee 1 13: Did not elect nominee 4 14: Elected nominee 0 15: Did not elect nominee 2 16: Did not elect nominee 4 17: ... Another nice thing about the Interlocked.Exchange() is it can be used to thread-safely set pretty much anything 64 bits or less in size including references, pointers (in unsafe mode), floats, doubles, etc. Summary So, now we’ve seen two more things we can do with Interlocked: reading and exchanging a value atomically. Read() and Exchange() are especially valuable for reading/writing 64 bit values atomically in a 32 bit system. Exchange() has value even beyond simply atomic writes by using the Exchange() to your advantage, since it reads and set the value atomically, which allows you to do lightweight nomination systems. There’s still a few more goodies in the Interlocked class which we’ll explore next time! Technorati Tags: C#,CSharp,.NET,Little Wonders,Interlocked

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My 5th App

- by Richard Jones

So, I’ve just completed my 5th commercial iPhone App. Always when I move to a new programming language I take a test application and port it to learn. So my equivalent of “Hello World” app. is - http://itunes.apple.com/gb/app/iching-master/id424495901?mt=8 I built this, as an app about a year ago, but figured that it worked so well on iOS that I would get it published. Technorati Tags: I-Ching,iChing,iPhone,iTunes

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Book Review: Professional ASP.Net MVC4

- by Sam Abraham

The past few weeks have been particularly busy as I continue to dedicate a bigger portion of my free time to refreshing my memory and enhancing my knowledge of best practices pertaining to technologies we plan on using for a major upcoming project. In this blog post, I will be providing a brief overview of my latest reading “Professional ASP.Net MVC4” by Jon Galloway, Phil Haack, Brad Wilson and K. Scott Allen. This book is a must read for web developers looking to enhance their MVC expertise with best practices and tips shared from recognized industry experts. This book takes the reader on a 16-chapter long journey towards being a better ASP.NET MVC developer with chapter 16 putting all information covered in practical context by dissecting the implementation of Nuget.org, a real-life open-source, ASP.NET MVC project. All code samples referenced in this book are conveniently accessible via NuGet, a free, open-source Library package manager that installs as a Visual Studio Extension. Chapters 2, 3 and 4 thoroughly cover MVC’s various components: Controllers “C”, Views “V” and Models “M” respectively. Chapter 5 covers additional extension methods (Helpers) provided to speed and ease the use of common HTML elements such as forms, textboxes, grids, to name a few… Chapter 6 tackles built-in validation while providing examples and use cases on implementing custom validation that plugs into the MVC framework. Chapters 7 thru 13 discusses the latest on Membership, Ajax, Routing, NuGet and the ASP.Net Web API. Chapters 12 (Dependency Injection) and 13 (Unit Testing) demonstrate a big competitive advantage of MVC with its ease of test-ability and plug-ability. Chapters 14 and 15 targets the advanced developer showcasing how to extend MVC to customize and replace every piece in the framework.In conclusion, I strongly recommend Professional ASP.NET MVC 4 as an excellent read for both developers already using MVC as well as those getting started with the framework. Many thanks to the Wiley/Wrox User Group Program for their support of our West Palm Beach Developers’ Group. You can access my reviews of books I recently read: Professional ASP.NET Design Patterns Professional WCF 4.0 Inside Windows Communication Foundation Inside Microsoft SQL Server 2008 series

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Installing Visual Studio 2010 Service Pack 1

- by Martin Hinshelwood

As has become customary when the product team releases a new patch, SP or version I like to document the install. This post seams almost redundant as I had no problems, but I think that is as valuable to other thinking of installing the Service Pack as all the problems that we sometimes get. As per Brian's post I am Installing Visual Studio Team Foundation Server Service Pack 1 first and indeed as this is a single server local deployment I need to install both. If I only install one it will leave the other product broken. Figure: Hopefully this will be more uneventful It takes a little while for your system to be checked to see what components need updating. On my main computer this was pretty quick, but on the laptop it took some time. Figure: There are a lot of components to update With this update also comes an update to .NET as well as many other components. Figure: I downloaded the full 1.5GB’s, but you could do a web install It depends on how good you internet connection is to how long it would take to download, but as I am now in the US I decided not to trust the internet connection speeds. It took around 30-40 minutes to download the full thing which is a little slow. Figure: I did not need to download, but that would increase the install time So on my main computer again this was fast, but again on my netbook this took a little while. Figure: The actual install took around 30-40 minutes (2 hours on netbook) I was pretty impressed with the speed of the install, and as Team Explore is now out of the box with Visual Studio 2010 I don’t get the problem of the SP being installed before Team Explorer and having a disjointed experience Figure: As I suspected, no problems with the install Figure: Checking in Visual Studio shows that all the servicing points were successful This was an easy experience even if the SP was over 1.5GB’s to download Hopefully I will be discovering things that work better for a good while to come, as well as not seeing holes in the product that I had no encountered yet. What were your experiences of installing Visual Studio 2010 Service pack 1?

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Stepping outside Visual Studio IDE [Part 1 of 2] with Eclipse

- by mbcrump

“If you're walking down the right path and you're willing to keep walking, eventually you'll make progress." – Barack Obama In my quest to become a better programmer, I’ve decided to start the process of learning Java. I will be primary using the Eclipse Language IDE. I will not bore you with the history just what is needed for a .NET developer to get up and running. I will provide links, screenshots and a few brief code tutorials. Links to documentation. The Official Eclipse FAQ’s Links to binaries. Eclipse IDE for Java EE Developers the Galileo Package (based on Eclipse 3.5 SR2) Sun Developer Network – Java Eclipse officially recommends Java version 5 (also known as 1.5), although many Eclipse users use the newer version 6 (1.6). That's it, nothing more is required except to compile and run java. Installation Unzip the Eclipse IDE for Java EE Developers and double click the file named Eclipse.exe. You will probably want to create a link for it on your desktop. Once, it’s installed and launched you will have to select a workspace. Just accept the defaults and you will see the following: Lets go ahead and write a simple program. To write a "Hello World" program follow these steps: Start Eclipse. Create a new Java Project: File->New->Project. Select "Java" in the category list. Select "Java Project" in the project list. Click "Next". Enter a project name into the Project name field, for example, "HW Project". Click "Finish" Allow it to open the Java perspective Create a new Java class: Click the "Create a Java Class" button in the toolbar. (This is the icon below "Run" and "Window" with a tooltip that says "New Java Class.") Enter "HW" into the Name field. Click the checkbox indicating that you would like Eclipse to create a "public static void main(String[] args)" method. Click "Finish". A Java editor for HW.java will open. In the main method enter the following line. System.out.println("This is my first java program and btw Hello World"); Save using ctrl-s. This automatically compiles HW.java. Click the "Run" button in the toolbar (looks like a VCR play button). You will be prompted to create a Launch configuration. Select "Java Application" and click "New". Click "Run" to run the Hello World program. The console will open and display "This is my first java program and btw Hello World". You now have your first java program, lets go ahead and make an applet. Since you already have the HW.java open, click inside the window and remove all code. Now copy/paste the following code snippet. Java Code Snippet for an applet. 1: import java.applet.Applet; 2: import java.awt.Graphics; 3: import java.awt.Color; 4: 5: @SuppressWarnings("serial") 6: public class HelloWorld extends Applet{ 7: 8: String text = "I'm a simple applet"; 9: 10: public void init() { 11: text = "I'm a simple applet"; 12: setBackground(Color.GREEN); 13: } 14: 15: public void start() { 16: System.out.println("starting..."); 17: } 18: 19: public void stop() { 20: System.out.println("stopping..."); 21: } 22: 23: public void destroy() { 24: System.out.println("preparing to unload..."); 25: } 26: 27: public void paint(Graphics g){ 28: System.out.println("Paint"); 29: g.setColor(Color.blue); 30: g.drawRect(0, 0, 31: getSize().width -1, 32: getSize().height -1); 33: g.setColor(Color.black); 34: g.drawString(text, 15, 25); 35: } 36: } The Eclipse IDE should look like Click "Run" to run the Hello World applet. Now, lets test our new java applet. So, navigate over to your workspace for example: “C:\Users\mbcrump\workspace\HW Project\bin” and you should see 2 files. HW.class java.policy.applet Create a HTML page with the following code: 1: <HTML> 2: <BODY> 3: <APPLET CODE=HW.class WIDTH=200 HEIGHT=100> 4: </APPLET> 5: </BODY> 6: </HTML> Open, the HTML page in Firefox or IE and you will see your applet running. I hope this brief look at the Eclipse IDE helps someone get acquainted with Java Development. Even if your full time gig is with .NET, it will not hurt to have another language in your tool belt. As always, I welcome any suggestions or comments.

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FREE goodies if you are a UK based software house already live on the Windows Azure Platform

- by Eric Nelson

In the UK we have seen some fantastic take up around the Windows Azure Platform and we have lined up some great stuff in 2011 to help companies fully exploit the Cloud – but we need you to tell us what you are up to! Once you tell us about your plans around Windows Azure, you will get access to FREE benefits including email based developer support and free monthly allowance of Windows Azure, SQL Azure and AppFabric from Jan 2011 – and more! (This offer is referred to as Cloud Essentials and is explained here) And… we will be able to plan the right amount of activity to continue to help early adopters through 2011. Step 1: Sign up your company to Microsoft Platform Ready (you will need a windows live id to do this) Step 2: Add your applications For each application, state your intention around Windows Azure (and SQL etc if you so wish) Step 3: Verify your application works on the Windows Azure Platform Step 4 (Optional): Test your application works on the Windows Azure Platform Download the FREE test tool. Test your application with it and upload the successful results. Step 5: Revisit the MPR site in early January to get details of Cloud Essentials and other benefits P.S. You might want some background on the “fantastic take up” bit: We helped over 3000 UK companies deploy test applications during the beta phase of Windows Azure We directly trained over 1000 UK developers during 2010 We already have over 100 UK applications profiled on the Microsoft Platform Ready site And in a recent survey of UK ISVs you all look pretty excited around Cloud – 42% already offer their solution on the Cloud or plan to.

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Creating SparseImages for Pivot

- by John Conwell

Learning how to programmatically make collections for Microsoft Live Labs Pivot has been a pretty interesting ride. There are very few examples out there, and the folks at MS Live Labs are often slow on any feedback. But that is what Reflector is for, right? Well, I was creating these InfoCard images (similar to the Car images in the "New Cars" sample collection that that MS created for Pivot), and wanted to put a Tag Cloud into the info card. The problem was the size of the tag cloud might vary in order for all the tags to fit into the tag cloud (often times being bigger than the info card itself). This was because the varying word lengths and calculated font sizes. So, to fix this, I made the tag cloud its own separate image from the info card. Then, I would create a sparse image out of the two images, where the tag cloud fit into a small section of the info card. This would allow the user to see the info card, but then zoom into the tag cloud and see all the tags at a normal resolution. Kind'a cool. But...I couldn't find one code example (not one!) of how to create a sparse image. There is one page on the SeaDragon site (http://www.seadragon.com/developer/creating-content/deep-zoom-tools/) that gives over the API for creating images and collections, and it sparsely goes over how to create a sparse image, but unless you are familiar with the API already, the documentation doesn't help very much. The key is the Image.ViewportWidth and Image.ViewportOrigin properties of the image that is getting super imposed on the main image. I'll walk through the code below. I've setup a couple Point structs to represent the parent and sub image sizes, as well as where on the parent I want to position the sub image. Next, create the parent image. This is pretty straight forward. Then I create the sub image. Then I calculate several ratios; the height to width ratio of the sub image, the width ratio of the sub image to the parent image, the height ratio of the sub image to the parent image, then the X and Y coordinates on the parent image where I want the sub image to be placed represented as a ratio of the position to the parent image size. After all these ratios have been calculated, I use them to calculate the Image.ViewportWidth and Image.ViewportOrigin values, then pass the image objects into the SparseImageCreator and call Create. The key thing that was really missing from the API documentation page is that when setting up your sub images, everything is expressed in a ratio in relation to the main parent image. If I had known this, it would have saved me a lot of trial and error time. And how did I figure this out? Reflector of course! There is a tool called Deep Zoom Composer that came from MS Live Labs which can create a sparse image. I just dug around the tool's code until I found the method that create sparse images. But seriously...look at the API documentation from the SeaDragon size and look at the code below and tell me if the documentation would have helped you at all. I don't think so! public static void WriteDeepZoomSparseImage(string mainImagePath, string subImagePath, string destination) { Point parentImageSize = new Point(720, 420); Point subImageSize = new Point(490, 310); Point subImageLocation = new Point(196, 17); List<Image> images = new List<Image>(); //create main image Image mainImage = new Image(mainImagePath); mainImage.Size = parentImageSize; images.Add(mainImage); //create sub image Image subImage = new Image(subImagePath); double hwRatio = subImageSize.X/subImageSize.Y; // height width ratio of the tag cloud double nodeWidth = subImageSize.X/parentImageSize.X; // sub image width to parent image width ratio double nodeHeight = subImageSize.Y / parentImageSize.Y; // sub image height to parent image height ratio double nodeX = subImageLocation.X/parentImageSize.X; //x cordinate position on parent / width of parent double nodeY = subImageLocation.Y / parentImageSize.Y; //y cordinate position on parent / height of parent subImage.ViewportWidth = (nodeWidth < double.Epsilon) ? 1.0 : (1.0 / nodeWidth); subImage.ViewportOrigin = new Point( (nodeWidth < double.Epsilon) ? -1.0 : (-nodeX / nodeWidth), (nodeHeight < double.Epsilon) ? -1.0 : ((-nodeY / nodeHeight) / hwRatio)); images.Add(subImage); //create sparse image SparseImageCreator creator = new SparseImageCreator(); creator.Create(images, destination); }

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Discovering Your Project

- by Tim Murphy

The discovery phase of any project is both exciting and critical to the project’s success. There are several key points that you need to keep in mind as you navigate this process. The first thing you need to understand is who the players in the project are and what their motivations are for the project. Leaving out a key stakeholder in the resulting product is one of the easiest ways to doom your project to fail. The better the quality of the input you have at this early phase the better chance you will have of creating a well accepted deliverable. The next task you should tackle is to gather the goals for the project. Specifically, what does the company expect to get for the money they are about to layout. This seems like a common sense task, but you would be surprised how many teams to straight to building the system. Even if you are following an agile methodology I believe that this is critical. Inventorying the resources that already exists gives you an idea what you are going to have to build and what you can leverage at lower risk. This list should include documentation, servers, code repositories, databases, languages, security systems and supporting teams. All of these are “resources” that can effect the cost and delivery schedule of your project. Finally, you need to verify what you have found and documented with the stakeholders and subject matter experts. Documentation that has not been reviewed is actually a list of assumptions and we all know that assumptions are the mother of all screw ups. If you give the discovery phase of your project the attention that it deserves your project has a much better chance of success. I would love to hear what other people find important for this phase. Please leave comments on this post so we can share the knowledge. del.icio.us Tags: Project discovery,documentation,business analysis,architecture

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Upgrading your Internet connection to obselescence

- by TATWORTH

Originally posted on: http://geekswithblogs.net/TATWORTH/archive/2013/10/11/upgrading-your-internet-connection-to-obselescence.aspxRecently I was approached by two UK Internet Service Providers to upgrade to a fibre connection. In each case I asked two questions:Can you provide me with a fixed IP Address?Is the equipment to be provided compatible with IPv6?None of the question was satisfactorily answered. One of the persons answering even suggested that granting a fixed IP Address would be a breach of security!I find it very disturbing that two companies that present themselves as innovative should still not be preparing for IPv6. The answer I would have expected was that all new equipment being supplied was IPv6 compatible and that plans were in hand for a switchover to IPv6. Instead new equipment would be supplied that would have to be replaced when IPv6 comes. Equally disturbing was that the call center people who answered did not know why a fixed IP address was important or why the change to IPv6 would have to come.I would rather not name and shame the two companies, however I will be looking elsewhere for my next Internet Service Provider.

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Verifying Office 2010 SP1 Installation

- by Chris Heacock

So you downloaded and installed SP1, but now you want to verify that SP1 actually installed! Looking at Outlook's Help Screen under Help->About, it isn't readily apparent that SP1 is installed. Like me, you probably expected to see 14.1.something. Perhaps 14.0.something SP1, right? If you click on that "Additional Version and Copyright Information", another window will pop up and show you a bit more useful info (if you don't have the version numbers committed to memory) That window *does* give us that comforting SP1, and now we can determine that if you have Office 14.1.6023.1000 (and beyond) you are indeed runnning Office 2010 SP1!

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Register now for the FREE Tech Days Online Conference January 20th

- by Eric Nelson

The perfect solution to the “January blues” is a good solid few hours learning about great technology. The 'Build an app for that' Online Conference is exactly that, featuring demo-rich sessions on building applications for the browser, Windows 7, and Windows Phone 7. There are three tracks letting you choose which sessions are most relevant to you - whether you're just considering client development with Silverlight, or you've already got stuck in to an advanced project. We'll also explore new form factors such as Phone and Slate, and how to develop touch-based applications. Finally we'll cover the important subject of how to create beautifully designed user interfaces. Register now Agenda:

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Windows 2008 R2, UDDI 3.0 and No Admin Links

- by Andy Morrison

Windows 2008 R2 might end up giving me a heart attack at some point. Yesterday I installed and configured UDDI 3.0 as part of an ESB 2.0 install & config. After configuring UDDI 3.0, if I browsed to the localhost/uddi virtual directory from IIS, all of the links would show up in UDDI. If opened up IE and went to the UDDI site only the Home and Search links would show up. You've probably already guessed at what the "fix" was... I had to Run IE as Administrator. Then when I browse to the UDDI site all of the links show up.

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My collection of favourite TFS utilities

- by Aaron Kowall

So, you’re in charge of your company or team’s Team Foundation Server. Wish it was easier to manage, administer, extend? Well, here are a few utilities that I highly recommend looking at. I’ve recently had need to rebuild my laptop and upgrade my local TFS environment to TFS 2012 Update 1. This gave me cause to enumerate some of the utilities I like to have on hand. One of the reasons I love to use TFS on projects is that it’s basically a complete ALM toolkit. Everything from Task Management, Version Control, Build Management, Test Management, Metrics and Reporting are all there ‘in the box’. However, no matter how complete a product set it, there are always ways to make it better. Here are a list of utilities and libraries that are pretty generally useful. this is not intended to be an exhaustive list of TFS extensions but rather a set that I recommend you look at. There are many more out there that may be applicable in one scenario or another. This set of tools should work with TFS 2012 or 2010 if you grab the right version. Most of these tools (and more) are available from the Visual Studio Gallery or CodePlex. General TFS Power Tools – This is ‘the’ collection of utilities and extensions delivered by the Product Group. Highly recommended from here are the Best Practice Analyzer for ensuring your TFS implementation is healthy and the Team Foundation Server Backups to ensure your TFS databases are backed up correctly. TFS Administrators Toolkit – helps make updates to work item types and reports across many team projects. Also provides visibility of disk usage by finding large files in version control or test attachments to assist in managing storage utilization. Version Control Git-TF - a set of cross-platform, command line tools that facilitate sharing of changes between TFS and Git. These tools allow a developer to use a local Git repository, and configure it to share changes with a TFS server. Great for all Git lovers who must integrate into a TFS repository. Testing TFS 2012 Tester Power Tool – A utility for bulk copying test cases which assists in an approach for managing test cases across multiple releases. A little plug that this utility was written and maintained by Anna Russo of Imaginet where I also work. Test Scribe - A documentation power tool designed to construct documents directly from the TFS for test plan and test run artifacts for the purpose of discussion, reporting etc. Reporting Community TFS Report Extensions - a single repository of SQL Server Reporting Services report for Team Foundation 2010 (and above). Check out the Test Plan Status report by Imaginet’s Steve St. Jean. Very valuable for your test managers. Builds TFS Build Manager – A great utility if you are build manager over a complex build environment with many TFS build definitions. Community TFS Build Extensions – contains many custom build activities. Current release binaries are for TFS 2010 but many of the activities can be recompiled for use with TFS 2012. While compiling this list, I was surprised by the number of TFS utilities and extensions I no longer use/need in TFS 2012 because of the great work by the TFS team addressing many gaps since the 2010 release. Are there any utilities you depend on that I’ve missed? I’d love to hear about them in the comments!

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Super haioase

- by haioase

- Cum se face ca barbatii de treizeci de ani arata mai bine decat femeile de aceeasi varsta ? - Foarte simplu. Pentru ca femeile de treizeci de ani au, in realitate, patruzeci !Un scotian si sotia se afla pe mare. Vine o furtuna si vasul se scufunda. Scotianul e salvat dar sotia nu poate fi gasita. Dupa o luna scotianul primeste de la politie o telegrama: "Sotia acoperita cu scoici, moluste si stridii gasita. Ce sa facem ?" Scotianul telegrafiaza inapoi: "Vindeti scoicile si stridiile. Trimiteti-mi banii. Aruncati din nou momeala." Un canibal calatorea cu avionul. Stewardesa il intreaba: - Ce ati dori sa serviti de mancare ? La care canibalul: - Imi aduceti va rog lista pasagerilor ...

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Silverlight IConvertible TypeConverter

- by codingbloke

I recently answered the following question on stackoverflow: Silverlight 3 custom control: only ‘int’ as numeric type for a property? [e.g. long or int64 seems to break] I quickly knocked up the class ConvertibleTypeConverter<T> that I posted in the question (listed later here as well). Afterward I fully expected to find that of the usual clever “bods who blog” to have covered this probably with a better solution than I. So far though I’ve not found one so I thought I’d blog it myself. The Problem Here is a classic gotcha I’ve seen asked more than once on stackoverflow :- public class MyClass { public float SomeValue { get; set; } } <local:MyClass SomeValue="45.15" /> This fails with the error “Failed to create a 'System.Single' from the text '45.15'” and results in much premature hair loss. Fortunately this is SL4, in SL3 the error message is almost meaningless. So what gives, how can it be that this fails when we can see other very similar values parsing happily all over the place? It comes down the fact that the Xaml parser only handles a few of the primitive data types namely: bool, int, string and double. Since the parser has no idea how to convert a string to a float we get the above error. The Solution The sensible solution is “use double not float” but lets not dwell on that, there has to be occasions where such an answer isn’t acceptable. In order to achieve parsing of other types we need an implementation of TypeConverter for the type of the property and then we need to use the TypeConverterAttribute to decorate the property . As an example the Silverlight SDK provides one for DateTime the DateTimeTypeConverter (yes I know DateTime isn’t really a primitive). The following class will parse in Xaml:- public class MyClass { [TypeConverter(typeof(DateTimeTypeConverter))] public DateTime SomeValue {get; set; } } So far though we would need to create a TypeConverter for each primitive type we are using, what if I had the following mad class to support in Xaml:- public class StrangePrimitives { public Boolean BooleanProp { get; set; } public Byte ByteProp { get; set; } public Char CharProp { get; set; } public DateTime DateTimeProp { get; set; } public Decimal DecimalProp { get; set; } public Double DoubleProp { get; set; } public Int16 Int16Prop { get; set; } public Int32 Int32Prop { get; set; } public Int64 Int64Prop { get; set; } public SByte SByteProp { get; set; } public Single SingleProp { get; set; } public String StringProp { get; set; } public UInt16 UInt16Prop { get; set; } public UInt32 UInt32Prop { get; set; } public UInt64 UInt64Prop { get; set; } } Then I want to fill an instance of StrangePrimitives with the following Xaml which of course fails. <local:StrangePrimitives x:Key="MyStrangePrimitives" BooleanProp="True" ByteProp="156" CharProp="A" DateTimeProp="06 Jun 2010" DecimalProp="123.56" DoubleProp="8372.937803" Int16Prop="16532" Int32Prop="73738248" Int64Prop="12345678909298" SByteProp="-123" SingleProp="39.0" StringProp="Hello, World!" UInt16Prop="40000" UInt32Prop="4294967295" UInt64Prop="18446744073709551615" /> I got to thinking, though, one thing all these primitive types have in common is that they all implement IConvertible so it should be possible to write just one converter to handle them all. Here it is:- The ConvertibleTypeConverter public class ConvertibleTypeConverter<T> : TypeConverter where T : IConvertible { public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { return sourceType.GetInterface("IConvertible", false) != null; } public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { return destinationType.GetInterface("IConvertible", false) != null; } public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value) { return ((IConvertible)value).ToType(typeof(T), culture); } public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType) { return ((IConvertible)value).ToType(destinationType, culture); } } I won’t bore you with an explanation of how it works, it simply adapts one existing interface (the IConvertible) and exposes it as another (the TypeConverter). With that in place the previous strange primitives class can be modified as:- public class StrangePrimitives { public Boolean BooleanProp { get; set; } [TypeConverter(typeof(ConvertibleTypeConverter<Byte>))] public Byte ByteProp { get; set; } [TypeConverter(typeof(ConvertibleTypeConverter<Char>))] public Char CharProp { get; set; } [TypeConverter(typeof(ConvertibleTypeConverter<DateTime>))] public DateTime DateTimeProp { get; set; } [TypeConverter(typeof(ConvertibleTypeConverter<Decimal>))] public Decimal DecimalProp { get; set; } public Double DoubleProp {get; set; } [TypeConverter(typeof(ConvertibleTypeConverter<Int16>))] public Int16 Int16Prop { get; set; } public Int32 Int32Prop { get; set; } [TypeConverter(typeof(ConvertibleTypeConverter<Int64>))] public Int64 Int64Prop { get; set; } [TypeConverter(typeof(ConvertibleTypeConverter<SByte>))] public SByte SByteProp { get; set; } [TypeConverter(typeof(ConvertibleTypeConverter<Single>))] public Single SingleProp { get; set; } public String StringProp { get; set; } [TypeConverter(typeof(ConvertibleTypeConverter<UInt16>))] public UInt16 UInt16Prop { get; set; } [TypeConverter(typeof(ConvertibleTypeConverter<UInt32>))] public UInt32 UInt32Prop { get; set; } [TypeConverter(typeof(ConvertibleTypeConverter<UInt64>))] public UInt64 UInt64Prop { get; set; } } This results in the previous Xaml parsing happily. Now it seems such an obvious thing to do that one may wonder why such a class doesn’t already existing in Silverlight or at least in the SDK. I would not be surprised if there were some very good reasons hence use the ConvertibleTypeConverter with caution. It does seem to me to be a useful little class to have lying around in the toolbox for the odd occasion where it may be needed.

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Tell Us Once–Final Phase goes live

- by BizTalk Visionary

Yesterday the final phase of ‘Tell Us Once’ went live. This completes the 4 1/2 year journey Solidsoft started on this cross government project with the addition of full electronic distribution of data and the most import piece – access for the citizen to use the service on-line. Tell Us Once (TUO) is the award-winning, cross-government programme that lets people inform central government and local authorities just once of a birth or death. In service in over 95% of councils in England, Scotland and Wales, it provides a permanent solution to the long-standing and frustrating issue of people having to notify the government multiple times. Several years ago, research showed that people had to make up to 44 contacts when reporting a death to government bodies and their local authority. The TUO service is offered as a face-to-face interview by the local authority or by telephone to a dedicated telephony service run by the Department for Work and Pensions (DWP). and a now a TUO online service for death. From the bereavement section of the Direct Gov web site the citizen is able to ‘enrich’ the standard death registration data to allow the ‘Tell Us Once’ system inform the various government departments about the death. These include the local council, DVLA, DWP, Passport service and HMRC. For the record this is an excellent example of how an SME working with a large SI partner can deliver success for government in a responsive and agile manner. For me personally it is a proud moment in which a vision I started with a very small team was followed through, extended and finally delivered by an excellent team at Solidsoft.

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Move SQL Server transaction log to another disk

- by Jim Lahman

When restoring a database backup, by default, SQL Server places the database files in the master database file directory. In this example, that location is in L:\MSSQL10.CHTL\MSSQL\DATA as shown by the issuance of sp_helpfile Hence, the restored files for the database CHTL_L2_DB are in the same directory Per SQL Server best practices, the log file should be on its own disk drive so that the database and log file can operate in a sequential manner and perform optimally. The steps to move the log file is as follows: Record the location of the database files and the transaction log files Note the future destination of the transaction log file Get exclusive access to the database Detach from the database Move the log file to the new location Attach to the database Verify new location of transaction log Record the location of the database file To view the current location of the database files, use the system stored procedure, sp_helpfile 1: use chtl_l2_db 2: go 3: 4: sp_helpfile 5: go Note the future destination of the transaction log file The future destination of the transaction log file will be located in K:\MSSQLLog Get exclusive access to the database To get exclusive access to the database, alter the database access to single_user. If users are still connected to the database, remove them by using with rollback immediate option. Note: If you had a pane connected to the database when the it is placed into single_user mode, then you will be presented with a reconnection dialog box. 1: alter database chtl_l2_db 2: set single_user with rollback immediate 3: go Detach from the database Now detach from the database so that we can use windows explorer to move the transaction log file 1: use master 2: go 3: 4: sp_detach_db 'chtl_l2_db' 5: go After copying the transaction log file re-attach to the database 1: use master 2: go 3: 4: sp_attach_db 'chtl_l2_db', 5: 'L:\MSSQL10.CHTL\MSSQL\DATA\CHTL_L2_DB.MDF', 6: 'K:\MSSQLLog\CHTL_L2_DB_4.LDF', 7: 'L:\MSSQL10.CHTL\MSSQL\DATA\CHTL_L2_DB_1.NDF', 8: 'L:\MSSQL10.CHTL\MSSQL\DATA\CHTL_L2_DB_2.NDF', 9: 'L:\MSSQL10.CHTL\MSSQL\DATA\CHTL_L2_DB_3.NDF' 10: GO

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SharePoint Saturday LA–Free Conference

- by MOSSLover

There are four really cool national board members for Women in SharePoint, Cathy Dew, Nedra Allmond, Michelle Strah, and and Lori Gowin. Nedra is running Women in SharePoint West and she just also happens to be helping out with SharePoint Saturday LA. If you guys had no idea that California also has SharePoint Saturdays then you were wrong. There is a SharePoint Saturday on April 2nd in the greater Los Angeles Area. If anyone is interested in the vicinity please visit this site: http://www.sharepointsaturday.org/la/default.aspx. Technorati Tags: SharePoint Saturday,Los Angeles,SharePoint 2010,SharePoint Events

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SharePoint 2010: Taxonomy feature (Feature ID "73EF14B1-13A9-416b-A9B5-ECECA2B0604C") has not been activated

- by Kelly Jones

I ran into an error message in SharePoint 2010 that took me a few minutes to figure out. I was working on a demo of SharePoint 2010’s managed metadata and getting an error when I was adding a Managed Metadata column to a library. A little Google research turned up this blog post: The Taxonomy feature (Feature ID "73EF14B1-13A9-416b-A9B5-ECECA2B0604C") has not been activated. As Michal Pisarek pointed out last June, you get the error because the Taxonomy feature isn’t activated. Like Michal, I’m not sure how this happened to my installation, but the fix he documented works. (Activating the feature using STSADM)

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RemoveHandler Issues with Custom Events

- by Jeff Certain

This is a case of things being more complicated that I thought they should be. Since it took a while to figure this one out, I thought it was worth explaining and putting all of the pieces to the answer in one spot. Let me set the stage. Architecturally, I have the notion of generic producers and consumers. These put items onto, and remove items from, a queue. This provides a generic, thread-safe mechanism to load balance the creation and processing of work items in our application. Part of the IProducer(Of T) interface is: 1: Public Interface IProducer(Of T) 2: Event ItemProduced(ByVal sender As IProducer(Of T), ByVal item As T) 3: Event ProductionComplete(ByVal sender As IProducer(Of T)) 4: End Interface Nothing sinister there, is there? In order to simplify our developers’ lives, I wrapped the queue with some functionality to manage the produces and consumers. Since the developer can specify the number of producers and consumers that are spun up, the queue code manages adding event handlers as the producers and consumers are instantiated. Now, we’ve been having some memory leaks and, in order to eliminate the possibility that this was caused by weak references to event handles, I wanted to remove them. This is where it got dicey. My first attempt looked like this: 1: For Each producer As P In Producers 2: RemoveHandler producer.ItemProduced, AddressOf ItemProducedHandler 3: RemoveHandler producer.ProductionComplete, AddressOf ProductionCompleteHandler 4: producer.Dispose() 5: Next What you can’t see in my posted code are the warnings this caused. The 'AddressOf' expression has no effect in this context because the method argument to 'AddressOf' requires a relaxed conversion to the delegate type of the event. Assign the 'AddressOf' expression to a variable, and use the variable to add or remove the method as the handler. Now, what on earth does that mean? Well, a quick Bing search uncovered a whole bunch of talk about delegates. The first solution I found just changed all parameters in the event handler to Object. Sorry, but no. I used generics precisely because I wanted type safety, not because I wanted to use Object. More searching. Eventually, I found this forum post, where Jeff Shan revealed a missing piece of the puzzle. The other revelation came from Lian_ZA in this post. However, these two only hinted at the solution. Trying some of what they suggested led to finally getting an invalid cast exception that revealed the existence of ItemProducedEventHandler. Hold on a minute! I didn’t create that delegate. There’s nothing even close to that name in my code… except the ItemProduced event in the interface. Could it be? Naaaaah. Hmmm…. Well, as it turns out, there is a delegate created by the compiler for each event. By explicitly creating a delegate that refers to the method in question, implicitly cast to the generated delegate type, I was able to remove the handlers: 1: For Each producer As P In Producers 2: Dim _itemProducedHandler As IProducer(Of T).ItemProducedEventHandler = AddressOf ItemProducedHandler 3: RemoveHandler producer.ItemProduced, _itemProducedHandler 4: 5: Dim _productionCompleteHandler As IProducer(Of T).ProductionCompleteEventHandler = AddressOf ProductionCompleteHandler 6: RemoveHandler producer.ProductionComplete, _productionCompleteHandler 7: producer.Dispose() 8: Next That’s “all” it took to finally be able to remove the event handlers and maintain type-safe code. Hopefully, this will save you the same challenges I had in trying to figure out how to fix this issue!

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Quick run through of the WP7 Developer Tools January 2011

- by mbcrump

In case you haven’t heard the latest WP7 Developers Tool update was released yesterday and contains a few goodies. First you need to go and grab the bits here. You can install them in any order, but I installed the WindowsPhoneDeveloperResources_en-US_Patch1.msp first. Then the VS10-KB2486994-x86.exe. They install silently. In other words, you would need to check Programs and Features and look in Installed Updates to see if they installed successfully. Like the screenshot below: Once you get them installed you can try out a few new features. Like Copy and Paste. Just fire up your application and put a TextBox on it and Select the Text and you will have the option highlighted in red above the text. Once you select it you will have the option to paste it. (see red rectangle below). Another feature is the Windows Phone Capability Detection Tool – This tool detects the phone capabilities used by your application. This will prevent you from submitting an app to the marketplace that says it uses x feature but really does not. How do you use it? Well navigate out to either directory: %ProgramFiles%\Microsoft SDKs\Windows Phone\v7.0\Tools\CapDetect %ProgramFiles (x86)%\Microsoft SDKs\Windows Phone\v7.0\Tools\CapDetect and run the following command: CapabilityDetection.exe Rules.xml YOURWP7XAPFILEOUTPUTDIRECTORY So, in my example you will see my app only requires the ID_CAP_MICROPHONE. Let’s see what the WmAppManifest.xml says in our WP7 Project: Whoa! That’s a lot of extra stuff we don’t need. We can delete unused capabilities safely now. Some of the other fixes are: (Copied straight from Microsoft) Fixes a text selection bug in pivot and panorama controls. In applications that have pivot or panorama controls that contain text boxes, users can unintentionally change panes when trying to copy text. To prevent this problem, open your application, recompile it, and then resubmit it to the Windows Phone Marketplace. Windows Phone Connect Tool – Allows you to connect your phone to a PC when Zune® software is not running and debug applications that use media APIs. For more information, see How to: Use the Connect Tool. Updated Bing Maps Silverlight Control – Includes improvements to gesture performance when using Bing™ Maps Silverlight® Control. Windows Phone Developer Tools Fix allowing deployment of XAP files over 64 MB in size to physical phone devices for testing and debugging. That’s pretty much it. Thanks again for reading my blog! Subscribe to my feed CodeProject

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NDepend Evaluation: Part 3

- by Anthony Trudeau

NDepend is a Visual Studio add-in designed for intense code analysis with the goal of high code quality. NDepend uses a number of metrics and aggregates the data in pleasing static and active visual reports. My evaluation of NDepend will be broken up into several different parts. In the first part of the evaluation I looked at installing the add-in. And in the last part I went over my first impressions including an overview of the features. In this installment I provide a little more detail on a few of the features that I really like. Dependency Matrix The dependency matrix is one of the rich visual components provided with NDepend. At a glance it lets you know where you have coupling problems including cycles. It does this with number indicating the weight of the dependency and a color-coding that indicates the nature of the dependency. Green and blue cells are direct dependencies (with the difference being whether the relationship is from row-to-column or column-to-row). Black cells are the ones that you really want to know about. These indicate that you have a cycle. That is, type A refers to type B and type B also refers to Type A. But, that’s not the end of the story. A handy pop-up appears when you hover over the cell in question. It explains the color, the dependency, and provides several interesting links that will teach you more than you want to know about the dependency. You can double-click the problem cells to explode the dependency. That will show the dependencies on a method-by-method basis allowing you to more easily target and fix the problem. When you’re done you can click the back button on the toolbar. Dependency Graph The dependency graph is another component provided. It’s complementary to the dependency matrix, but it isn’t as easy to identify dependency issues using the window. On a positive note, it does provide more information than the matrix. My biggest issue with the dependency graph is determining what is shown. This was not readily obvious. I ended up using the navigation buttons to get an acceptable view. I would have liked to choose what I see. Once you see the types you want you can get a decent idea of coupling strength based on the width of the dependency lines. Double-arrowed lines are problematic and are shown in red. The size of the boxes will be related to the metric being displayed. This is controlled using the Box Size drop-down in the toolbar. Personally, I don’t find the size of the box to be helpful, so I change it to Constant Font. One nice thing about the display is that you can see the entire path of dependencies when you hover over a type. This is done by color-coding the dependencies and dependants. It would be nice if selecting the box for the type would lock the highlighting in place. I did find a perhaps unintended work-around to the color-coding. You can lock the color-coding in by hovering over the type, right-clicking, and then clicking on the canvas area to clear the pop-up menu. You can then do whatever with it including saving it to an image file with the color-coding. CQL NDepend uses a code query language (CQL) to work with your code just like it was a database. CQL cannot be confused with the robustness of T-SQL or even LINQ, but it represents an impressive attempt at providing an expressive way to enumerate and interrogate your code. There are two main windows you’ll use when working with CQL. The CQL Query Explorer allows you to define what queries (rules) are run as part of a report – I immediately unselected rules that I don’t want in my results. The CQL Query Edit window is where you can view or author your own rules. The explorer window is pretty self-explanatory, so I won’t mention it further other than to say that any queries you author will appear in the custom group. Authoring your own queries is really hard to screw-up. The Intellisense-like pop-ups tell you what you can do while making composition easy. I was able to create a query within two minutes of playing with the editor. My query warns if any types that are interfaces don’t start with an “I”. WARN IF Count > 0 IN SELECT TYPES WHERE IsInterface AND !NameLike “I” The results from the CQL Query Edit window are immediate. That fact makes it useful for ad hoc querying. It’s worth mentioning two things that could make the experience smoother. First, out of habit from using Visual Studio I expect to be able to scroll and press Tab to select an item in the list (like Intellisense). You have to press Enter when you scroll to the item you want. Second, the commands are case-sensitive. I don’t see a really good reason to enforce that. CQL has a lot of potential not just in enforcing code quality, but also enforcing architectural constraints that your enterprise has defined. Up Next My next update will be the final part of the evaluation. I will summarize my experience and provide my conclusions on the NDepend add-in. ** View Part 1 of the Evaluation ** ** View Part 2 of the Evaluation ** Disclaimer: Patrick Smacchia contacted me about reviewing NDepend. I received a free license in return for sharing my experiences and talking about the capabilities of the add-in on this site. There is no expectation of a positive review elicited from the author of NDepend.

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C# 4.0 Optional/Named Parameters Beginner’s Tutorial

- by mbcrump

One of the interesting features of C# 4.0 is for both named and optional arguments. They are often very useful together, but are quite actually two different things. Optional arguments gives us the ability to omit arguments to method invocations. Named arguments allows us to specify the arguments by name instead of by position. Code using the named parameters are often more readable than code relying on argument position. These features were long overdue, especially in regards to COM interop. Below, I have included some examples to help you understand them more in depth. Please remember to target the .NET 4 Framework when trying these samples. Code Snippet using System; namespace ConsoleApplication3 { class Program { static void Main(string[] args) { //C# 4.0 Optional/Named Parameters Tutorial Foo(); //Prints to the console | Return Nothing 0 Foo("Print Something"); //Prints to the console | Print Something 0 Foo("Print Something", 1); //Prints to the console | Print Something 1 Foo(x: "Print Something", i: 5); //Prints to the console | Print Something 5 Foo(i: 5, x: "Print Something"); //Prints to the console | Print Something 5 Foo("Print Something", i: 5); //Prints to the console | Print Something 5 Foo2(i3: 77); //Prints to the console | 77 // Foo(x:"Print Something", 5); //Positional parameters must come before named arguments. This will error out. Console.Read(); } static void Foo(string x = "Return Nothing", int i = 0) { Console.WriteLine(x + " " + i + Environment.NewLine); } static void Foo2(int i = 1, int i2 = 2, int i3 = 3, int i4 = 4) { Console.WriteLine(i3); } } }

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