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  • IE 11 Updates its Developers Tools

    - by Aligned
    Originally posted on: http://geekswithblogs.net/Aligned/archive/2013/08/01/ie-11-updates-its-developers-tools.aspxI installed the IE 11 preview for Windows 7 (I’m getting upgraded to Windows 8 at work next week). I’ve never been a fan of the IE 8 – 10 developer tools so I’ve mostly been using Chrome or Firefox’s Firebug. This revamp looks great and seems to work well. I think I’ll be spending more time in IE with the developer tools, once IE 11 is released. “F12 Tools in Internet Explorer 11 Preview has been rebuilt from the ground up to give you: a new, cleaner user interface. new Responsiveness, Memory, and Emulation tools. new and improved functionality in familiar tools. an easier and faster workflow.” http://msdn.microsoft.com/en-us/library/ie/bg182632(v=vs.85).aspxhttp://ie.microsoft.com/testdrive/Browser/F12Adventure/ has a nice visual walk through of the new features.

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  • Using Radio Button in GridView with Validation

    - by Vincent Maverick Durano
    A developer is asking how to select one radio button at a time if the radio button is inside the GridView.  As you may know setting the group name attribute of radio button will not work if the radio button is located within a Data Representation control like GridView. This because the radio button inside the gridview bahaves differentely. Since a gridview is rendered as table element , at run time it will assign different "name" to each radio button. Hence you are able to select multiple rows. In this post I'm going to demonstrate how select one radio button at a time in gridview and add a simple validation on it. To get started let's go ahead and fire up visual studio and the create a new web application / website project. Add a WebForm and then add gridview. The mark up would look something like this: <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" > <Columns> <asp:TemplateField> <ItemTemplate> <asp:RadioButton ID="rb" runat="server" /> </ItemTemplate> </asp:TemplateField> <asp:BoundField DataField="RowNumber" HeaderText="Row Number" /> <asp:BoundField DataField="Col1" HeaderText="First Column" /> <asp:BoundField DataField="Col2" HeaderText="Second Column" /> </Columns> </asp:GridView> Noticed that I've added a templatefield column so that we can add the radio button there. Also I have set up some BoundField columns and set the DataFields as RowNumber, Col1 and Col2. These columns are just dummy columns and i used it for the simplicity of this example. Now where these columns came from? These columns are created by hand at the code behind file of the ASPX. Here's the code below: private DataTable FillData() { DataTable dt = new DataTable(); DataRow dr = null; //Create DataTable columns dt.Columns.Add(new DataColumn("RowNumber", typeof(string))); dt.Columns.Add(new DataColumn("Col1", typeof(string))); dt.Columns.Add(new DataColumn("Col2", typeof(string))); //Create Row for each columns dr = dt.NewRow(); dr["RowNumber"] = 1; dr["Col1"] = "A"; dr["Col2"] = "B"; dt.Rows.Add(dr); dr = dt.NewRow(); dr["RowNumber"] = 2; dr["Col1"] = "AA"; dr["Col2"] = "BB"; dt.Rows.Add(dr); dr = dt.NewRow(); dr["RowNumber"] = 3; dr["Col1"] = "A"; dr["Col2"] = "B"; dt.Rows.Add(dr); dr = dt.NewRow(); dr["RowNumber"] = 4; dr["Col1"] = "A"; dr["Col2"] = "B"; dt.Rows.Add(dr); dr = dt.NewRow(); dr["RowNumber"] = 5; dr["Col1"] = "A"; dr["Col2"] = "B"; dt.Rows.Add(dr); return dt; } And here's the code for binding the GridView with the dummy data above. protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { GridView1.DataSource = FillData(); GridView1.DataBind(); } } Okay we have now a GridView data with a radio button on each row. Now lets go ahead and switch back to ASPX mark up. In this example I'm going to use a JavaScript for validating the radio button to select one radio button at a time. Here's the javascript code below: function CheckOtherIsCheckedByGVID(rb) { var isChecked = rb.checked; var row = rb.parentNode.parentNode; if (isChecked) { row.style.backgroundColor = '#B6C4DE'; row.style.color = 'black'; } var currentRdbID = rb.id; parent = document.getElementById("<%= GridView1.ClientID %>"); var items = parent.getElementsByTagName('input'); for (i = 0; i < items.length; i++) { if (items[i].id != currentRdbID && items[i].type == "radio") { if (items[i].checked) { items[i].checked = false; items[i].parentNode.parentNode.style.backgroundColor = 'white'; items[i].parentNode.parentNode.style.color = '#696969'; } } } } The function above sets the row of the current selected radio button's style to determine that the row is selected and then loops through the radio buttons in the gridview and then de-select the previous selected radio button and set the row style back to its default. You can then call the javascript function above at onlick event of radio button like below: <asp:RadioButton ID="rb" runat="server" onclick="javascript:CheckOtherIsCheckedByGVID(this);" /> Here's the output below: On Load: After Selecting a Radio Button: As you have noticed, on initial load there's no default selected radio in the GridView. Now let's add a simple validation for that. We will basically display an error message if a user clicks a button that triggers a postback without selecting  a radio button in the GridView. Here's the javascript for the validation: function ValidateRadioButton(sender, args) { var gv = document.getElementById("<%= GridView1.ClientID %>"); var items = gv.getElementsByTagName('input'); for (var i = 0; i < items.length ; i++) { if (items[i].type == "radio") { if (items[i].checked) { args.IsValid = true; return; } else { args.IsValid = false; } } } } The function above loops through the rows in gridview and find all the radio buttons within it. It will then check each radio button checked property. If a radio is checked then set IsValid to true else set it to false.  The reason why I'm using IsValid is because I'm using the ASP validator control for validation. Now add the following mark up below under the GridView declaration: <br /> <asp:Label ID="lblMessage" runat="server" /> <br /> <asp:Button ID="btn" runat="server" Text="POST" onclick="btn_Click" ValidationGroup="GroupA" /> <asp:CustomValidator ID="CustomValidator1" runat="server" ErrorMessage="Please select row in the grid." ClientValidationFunction="ValidateRadioButton" ValidationGroup="GroupA" style="display:none"></asp:CustomValidator> <asp:ValidationSummary ID="ValidationSummary1" runat="server" ValidationGroup="GroupA" HeaderText="Error List:" DisplayMode="BulletList" ForeColor="Red" /> And then at Button Click event add this simple code below just to test if  the validation works: protected void btn_Click(object sender, EventArgs e) { lblMessage.Text = "Postback at: " + DateTime.Now.ToString("hh:mm:ss tt"); } Here's the output below that you can see in the browser:   That's it! I hope someone find this post useful! Technorati Tags: ASP.NET,JavaScript,GridView

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  • Frederick .NET User Group May 2010 Meeting

    - by John Blumenauer
    FredNUG is pleased to announce our May speaker will be Kevin Griffin.  Kevin has been speaking at several community events this spring and we’re pleased he’s stopping by FredNUG to present at our May meeting.  On May 18th, we’ll start with pizza and social networking at 6:30 PM.  Then, starting at 7 PM, Kevin Griffin will present “Awesomize Your Windows Apps.”   The scheduled agenda is:   6:30 PM - 7:00 PM - Pizza/Social Networking/Announcements 7:00 PM - 8:30 PM - Main Topic: Awesomize Your Windows Apps with Kevin Griffin  Main Topic Description:  Awesomize Your Windows Apps With the release of Windows 7, many developers might be looking to take advantage of the features Windows 7 offers. This presentation offers attendees a broad overview of the Windows API Code Pack, which is a managed library for .NET developers to use for accessing some of the underlying functionality of Windows that was typically reserved for Interop fans. Topics and demos include Windows 7 taskbar functionality, Task dialogs, Libraries support, and more. Speaker Bio: Kevin Griffin is a .NET Developer for Antech Systems, located in Chesapeake, VA. He's an ASPInsider and the leader of the Hampton Roads .NET Users Group. Additionally, he serves as an INETA mentor for the state of Virginia. Often, he can be found speaking at or attending other local user group meetings or code camps. He enjoys working with new technology, and consistently works on being a better developer and building the best software he can. Follow Kevin on Twitter: http://www.twitter.com/1kevgriff Read Kevin's Blog: http://www.kevgriffin.com    8:30 PM - 8:45 PM – RAFFLE! Please join us and get involved in our .NET developers community!

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  • Adding Fake Build Information in TFS 2010

    - by Jakob Ehn
    We have been using TFS 2010 build for distributing a build in parallel on several agents, but where the actual compilation is done by a bunch of external tools and compilers, e.g. no MSBuild involved. We are using the ParallelTemplate.xaml template that Jim Lamb blogged about previously, which distributes each configuration to a different agent. We developed custom activities for running these external compilers and collecting the information and errors by reading standard out/error and pushing it back to the build log. But since we aren’t using MSBuild we don’t the get nice configuration summary section on the build summary page that we are used to. We would like to show the result of each configuration with any errors/warnings as usual, together with a link to the log file. TFS 2010 API to the rescue! What we need to do is adding information to the InformationNode structure that is associated with every TFS build. The log that you normally see in the Log view is built up as a tree structure of IBuildInformationNode objects. This structure can we accessed by using the InformationNodeConverters class. This class also contain some helper methods for creating BuildProjectNode, which contain the information about each project that was build, for example which configuration, number of errors and warnings and link to the log file. Here is a code snippet that first creates a “fake” build from scratch and the add two BuildProjectNodes, one for Debug|x86 and one for Release|x86 with some release information:   TfsTeamProjectCollection collection = TfsTeamProjectCollectionFactory.GetTeamProjectCollection(new Uri("http://lt-jakob2010:8080/tfs")); IBuildServer buildServer = collection.GetService<IBuildServer>(); var buildDef = buildServer.GetBuildDefinition("TeamProject", "BuildDefinition"); //Create fake build with random build number var detail = buildDef.CreateManualBuild(new Random().Next().ToString()); // Create Debug|x86 project summary IBuildProjectNode buildProjectNode = detail.Information.AddBuildProjectNode(DateTime.Now, "Debug", "MySolution.sln", "x86", "$/project/MySolution.sln", DateTime.Now, "Default"); buildProjectNode.CompilationErrors = 1; buildProjectNode.CompilationWarnings = 1; buildProjectNode.Node.Children.AddBuildError("Compilation", "File1.cs", 12, 5, "", "Syntax error", DateTime.Now); buildProjectNode.Node.Children.AddBuildWarning("File2.cs", 3, 1, "", "Some warning", DateTime.Now, "Compilation"); buildProjectNode.Node.Children.AddExternalLink("Log File", new Uri(@"\\server\share\logfiledebug.txt")); buildProjectNode.Save(); // Create Releaes|x86 project summary buildProjectNode = detail.Information.AddBuildProjectNode(DateTime.Now, "Release", "MySolution.sln", "x86", "$/project/MySolution.sln", DateTime.Now, "Default"); buildProjectNode.CompilationErrors = 0; buildProjectNode.CompilationWarnings = 0; buildProjectNode.Node.Children.AddExternalLink("Log File", new Uri(@"\\server\share\logfilerelease.txt")); buildProjectNode.Save(); detail.Information.Save(); detail.FinalizeStatus(BuildStatus.Failed); When running this code, it will a create a build that looks like this: As you can see, it created two configurations with error and warning information and a link to a log file. Just like a regular MSBuild would have done. This is very useful when using TFS 2010 Build in heterogeneous environments. It would also be possible to do this when running compilations completely outside TFS build, but then push the results of the into TFS for easy access. You can push all information, including the compilation summary, drop location, test results etc using the API.

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  • Apress Books - 4 - Introducing Visual C# 2010 - Initial comments

    - by TATWORTH
    Apress books Visual C# 2010 (ISBN 978-1-4302-3171-4) - http://www.apress.com/book/view/1430231718 is both an excellent introduction to C# programming and a manual for those with experiance. So far I have only been through a few chapters but I have been favourably impressed. In the chapter on Exceptions, I have posted an errata regarding the custom exception in  listing 14-17; it is missing an overload required by FXCOP     private CustomException(SerializationInfo info, StreamingContext context) : base(info, context)     {     } Aside of this minor point, I have no hesitation to recommending this book to anyone who wishes to learn C#.

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  • BizTalk 2010 upgrade - Sunset Development/Deployment Modes

    - by Ahsan Alam
    Those who are familiar with BizTalk 2006, should know about Development and Deployment modes in Visual Studio. Personally, I never questioned why it's not Debug and Release just like everything else in Visual Studio. Then everything changed in BizTalk 2010. BizTalk and Visual Studio 2010 now uses Debug and Release modes by default. When we upgraded BizTalk 2006 solution to 2010, Development and Deployment modes remained unchanged for all the projects, and code compiled without any issues. Soon, I realized that any new projects added to the converted solutions started using Debug and Release modes. This also didn't cause any problem compiling the solution from Visual Studio; however, it broke our custom build/deployment scripts since the scripts were trying to build in Deployment mode. So, I decided to change all projects from Development and Deployment modes to Debug and Release modes to keep them consistent. During this process I realized that Debug and Release modes are defaults; but it's completely customizable. During the BizTalk 2010 upgrade process, I figured that switching to default Debug and Release modes are the best options.

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  • Great Customer Service Example

    - by MightyZot
    A few days ago I wrote about what I consider a poor customer service interaction with TiVo, a company that I have been faithful to for the past 12 years or so. In that post I talked about how they helped me, but I felt like I was doing something wrong at the end of the call – when in reality I was just following through with an offer that TiVo made possible through my cable company. Today I had a wonderful customer service interaction with American Express, another company that I have been loyal to for many years.(I am a Gold Card member.) I like my Amex card because I can use it for big purchases and it forces me to pay them off at the end of the month. Well, the reality is that I’m not always so good at doing that, so sometimes my payments are over a couple of months.  :) A few days ago I received an email from “American Express” fraud detection. The email stated that I should call a toll free number and have the last four digits of my card handy. I grew up during the BBS era with some creative and somewhat mischievous friends. I’ve learned to be extremely cautious with regard to my online life! So, I did what you would expect…I sent them a nice reply that said “Go screw yourself.” For the past couple of days someone has been trying to call me and I assumed it was the same prankster trying to get the last four digits of my card. The last caller left a message indicating that they were from American Express and they wanted to talk to me about my card. After looking up their customer service numbers on the www.americanexpress.com web site, I called and was put through to the fraud detection group. The rep explained that there were some charges on my wife’s card that did not fit our purchase profile. She went through each charge and, for the most part, they looked like charges my wife may have made. My wife had asked to use the card for some Christmas shopping during the same timeframe as the charges. The American Express rep very politely explained that these looked out of character to her. She continued through the charges. She listed a charge for $160 – at this point my adrenaline started kicking in. My wife said she was going to charge about $25 or $30 dollars, not $160. Next, the rep listed a charge for over $1200. Uh oh!! Now I know that my account has been compromised. I informed the rep that we definitely did not make those charges. She replied with, “that’s ok Mr Pope, we declined those charges as well as some others.” We went through the pending charges and there were a couple more that were questionable. The rep very patiently waited while I called my wife on my office phone to verify the charges. Sure enough, my wife had not ordered anything from Netflix or purchased anything with Yahoo Wallet! “No problem Mr Pope, we will remove those charges as well.” “We are going to cancel your wife’s card and send her a new one. She will receive it by 7pm tomorrow via Federal Express. Please watch your statements over the next couple of months. If you notice anything fishy, give us a call and we will take care of it for you.” (Wow, I’m thinking to myself!) “Is there anything else I can help you with Mr Pope?” “Nope, thank you very much for catching this so early and declining those charges!”, I said smiling. Apparently she could hear me smiling on the other end of the phone line because she replied with “keep smiling Mr Pope and have a good rest of your week.” Now THAT’s customer service!  Thank you American Express!!! I shall remain an ever faithful customer. Interesting…

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  • Stop Spinning Your Wheels&hellip; Sage Advice for Aspiring Developers

    - by Mark Rackley
    So… lately I’ve been tasked with helping bring some non-developers over the hump and become full-fledged, all around, SharePoint developers. Well, only time will tell if I’m successful or a complete failure. Good thing about failures though, you know what NOT to do next time! Anyway, I’ve been writing some sort of code since I was about 10 years old; so I sometimes take for granted the effort some people have to go through to learn a new technology. I guess if I had to say I was an “expert” in one thing it would be learning (and getting “stuff” done) in new technologies. Maybe that’s why I’ve embraced SharePoint and the SharePoint community. SharePoint is the first technology I haven’t been able to master or get everything done without help from other people. I KNOW I’ll never know it all and I learn something new every day.  It keeps it interesting, it keeps me motivated, and keeps me involved. So, what some people may consider a downside of SharePoint, I definitely consider a plus. Crap.. I’m rambling. Where was I? Oh yeah… me trying to be helpful. Like I said, I am able to quickly and effectively pick up new languages, technology, etc. and put it to good use. Am I just brilliant? Well, my mom thinks so.. but maybe not. Maybe I’ve just been doing it for a long time…. 25 years in some form or fashion… wow I’m old… Anyway, what I lack in depth I make up for in breadth and being the “go-to” guy wherever I work when someone needs to “get stuff done”.  Let’s see if I can take some of that experience and put it to practical use to help new people get up to speed faster, learn things more effectively, and become that go-to guy. First off…  make sure you… Know The Basics I don’t have the time to teach new developers the basics, but you gotta know them. I’ve only been “taught” two languages.. Fortran 77 and C… everything else I’ve picked up from “doing”. I HAD to know the basics though, and all new developers need to understand the very basics of development.  97.23% of all languages will have the following: Variables Functions Arrays If statements For loops / While loops If you think about it, most development is “if this, do this… or while this, do this…”.  “This” may be some unique method to your language or something you develop, but the basics are the basics. YES there are MANY other development topics you need to understand, but you shouldn’t be scratching your head trying to figure out what a ”for loop” is… (Also learn about classes and hashtables as quickly as possible). Once you have the basics down it makes it much easier to… Learn By Doing This may just apply to me and my warped brain.  I don’t learn a new technology by reading or hearing someone speak about it. I learn by doing. It does me no good to try and learn all of the intricacies of a new language or technology inside-and-out before getting my hands dirty. Just show me how to do one thing… let me get that working… then show me how to do the next thing.. let me get that working… Now, let’s see what I can figure out on my own. Okay.. now it starts to make sense. I see how the language works, I can step through the code, and before you know it.. I’m productive in a new technology. Be careful here though…. make sure you… Don’t Reinvent The Wheel People have been writing code for what… 50+ years now? So, why are you trying to tackle ANYTHING without first Googling it with Bing to see what others have done first? When I was first learning C# (I had come from a Java background) I had to call a web service.  Sure! No problem! I’d done this many times in Java. So, I proceeded to write an HTTP Handler, called the Web Service and it worked like a charm!!!  Probably about 2.3 seconds after I got it working completely someone says to me “Why didn’t you just add a Web Reference?” Really? You can do that?  oops… I just wasted a lot of time. Before undertaking the development of any sort of utility method in a new language, make sure it’s not already handled for you… Okay… you are starting to write some code and are curious about the possibilities? Well… don’t just sit there… Try It And See What Happens This is actually one of my biggest pet peeves. “So… ‘x++’ works in C#, but does it also work in JavaScript?”   Really? Did you just ask me that? In the time it spent for you to type that email, press the send button, me receive the email, get around to reading it, and replying with “yes” you could have tested it 47 times and know the answer! Just TRY it! See what happens! You aren’t doing brain surgery. You aren’t going to kill anyone, and you BETTER not be developing in production. So, you are not going to crash any production systems!! Seriously! Get off your butt and just try it yourself. The extra added benefit is that it doesn’t work, the absolute best way to learn is to… Learn From Your Failures I don’t know about you… but if I screw up and something doesn’t work, I learn A LOT more debugging my problem than if everything magically worked. It’s okay that you aren’t perfect! Not everyone can be me? In the same vein… don’t ask someone else to debug your problem until you have made a valiant attempt to do so yourself. There’s nothing quite like stepping through code line by line to see what it’s REALLY doing… and you’ll never feel more stupid sometimes than when you realize WHY it’s not working.. but you realize... you learn... and you remember. There is nothing wrong with failure as long as you learn from it. As you start writing more and more and more code make sure that you ALWAYS… Develop for Production You will soon learn that the “prototype” you wrote last week to show as a “proof of concept” is going to go directly into production no matter how much you beg and plead and try to explain it’s not ready to go into production… it’s going to go straight there.. and it’s like herpes.. it doesn’t go away and there’s no fixing it once it’s in there.  So, why not write ALL your code like it will be put in production? It MIGHT take a little longer, but in the long run it will be easier to maintain, get help on, and you won’t be embarrassed that it’s sitting on a production server for everyone to use and see. So, now that you are getting comfortable and writing code for production it is important to to remember the… KISS Principle… Learn It… Love It… Keep It Simple Stupid Seriously.. don’t try to show how smart you are by writing the most complicated code in history. Break your problem up into discrete steps and write each step. If it turns out you have some redundancy, you can always go back and tweak your code later.  How bad is it when you write code that LOOKS cocky? I’ve seen it before… some of the most abstract and complicated classes when a class wasn’t even needed! Or the most elaborate unreadable code jammed into one really long line when it could have been written in three lines, performed just as well, and been SOOO much easier to maintain. Keep it clear and simple.. baby steps people. This will help you learn the technology, debug problems, AND it will help others help you find your problems if they don’t have to decipher the Dead Sea Scrolls just to figure out what you are trying to do…. Really.. don’t be that guy… try to curb your ego and… Keep an Open Mind No matter how smart you are… how fast you type… or how much you get paid, don’t let your ego get in the way. There is probably a better way to do everything you’ve ever done. Don’t become so cocky that you can’t think someone knows more than you. There’s a lot of brilliant, helpful people out there willing to show you tricks if you just give them a chance. A very super-awesome developer once told me “So what if you’ve been writing code for 10 years or more! Does your code look basically the same? Are you not growing as a developer?” Those 10 years become pretty meaningless if you just “know” that you are right and have not picked up new tips, tricks, methods, and patterns along the way. Learn from others and find out what’s new in development land (you know you don’t have to specifically use pointers anymore??). Along those same lines… If it’s not working, first assume you are doing something wrong. You have no idea how much it annoys people who are trying to help you when you first assume that the help they are trying to give you is wrong. Just MAYBE… you… the person learning is making some small mistake? Maybe you didn’t describe your problem correctly? Maybe you are using the wrong terminology? “I did exactly what you said and it didn’t work.”  Oh really? Are you SURE about that? “Your solution doesn’t work.”  Well… I’m pretty sure it works, I’ve used it 200 times… What are you doing differently? First try some humility and appreciation.. it will go much further, especially when it turns out YOU are the one that is wrong. When all else fails…. Try Professional Training Some people just don’t have the mindset to go and figure stuff out. It’s a gift and not everyone has it. If everyone could do it I wouldn’t have a job and there wouldn’t be professional training available.  So, if you’ve tried everything else and no light bulbs are coming on, contact the experts who specialize in training. Be careful though, there is bad training out there. Want to know the names of some good places? Just shoot me a message and I’ll let you know. I’m boycotting endorsing Andrew Connell anymore until I get that free course dangit!! So… that’s it.. that’s all I got right now. Maybe you thought all of this is common sense, maybe you think I’m smoking crack. If so, don’t just sit there, there’s a comments section for a reason. Finally, what about you? What tips do you have to help this aspiring to learn the dark arts??

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  • MVVM Light V3 released at #MIX10

    - by Laurent Bugnion
    During my session “Understanding the MVVM pattern” at MIX10 in Vegas, I showed some components of the MVVM Light toolkit V3, which gave me the occasion to announce the release of version 3. This version has been in alpha stage for a while, and has been tested by many users. it is very stable, and ready for a release. So here we go! What’s new What’s new in MVVM Light Toolkit V3 is the topic of the next post. Cleaning up I would recommend cleaning up older versions before installing V3. I prepared a page explaining how to do that manually. Unfortunately I didn’t have time to create an automatic cleaner/installer, this is very high on my list but with the book and the conferences going on, it will take a little more time. Cleaning up is recommended because I changed the name of some DLLs to avoid some confusion (between the WPF3.5 and WPF4 version, as well as between the SL3 and SL4 versions). More details in the section titled “Compatibility”. Installation Installing MVVM Light toolkit is the manual process of unzipping a few files. The installation page has been updated to reflect the newest information. Compatibility MVVM Light toolkit V3 has components for the following environments and frameworks: Visual Studio 2008: Silverlight 3 Windows Presentation Foundation 3.5 SP1 Expression Blend 3 Silverlight 3 Windows Presentation Foundation 3.5 SP1 Visual Studio 2010 RC Silverlight 3 Silverlight 4 Windows Presentation Foundation 3.5 SP1 Windows Presentation Foundation 4 Silverlight for Windows Phone 7 series Expression Blend 4 beta Silverlight 3 Silverlight 4 Windows Presentation Foundation 3.5 SP1 Windows Presentation Foundation 4 Feedback As usual I welcome your constructive feedback. If you want the issue to be discussed in public, the best way is through the discussion page on the Codeplex site. if you wish to keep the conversation private, please check my Contact page for ways to talk to me. Video, tutorials There are a few new videos and tutorials available for the MVVM Light toolkit. The material is listed on the Get Started page, under “tutorials”.   Laurent Bugnion (GalaSoft) Subscribe | Twitter | Facebook | Flickr | LinkedIn

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  • Running Windows Phone Developers Tools CTP under VMWare Player - Yes you can! - But do you want to?

    - by Liam Westley
    This blog is the result of a quick investigation of running the Windows Phone Developer Tools CTP under VMWare Player.  In the release notes for Windows Phone Developer Tools CTP it mentions that it is not supported under VirtualPC or Hyper-V.  Some developers have policies where ‘no non-production code’ can be installed on their development workstation and so the only way they can use a CTP like this is in a virtual machine. The dilemma here is that the emulator for Windows Phone itself is a virtual machine and running a virtual machine within another virtual machine is normally frowned upon.  Even worse, previous Windows Mobile emulators detected they were in a virtual machine and refused to run.  Why VMWare? I selected VMWare as a possible solution as it is possible to run VMWare ESXi under VMWare Workstation by manually setting configuration options in the VMX configuration file so that it does not detect the presence of a virtual environment. I actually found that I could use VMWare Player (the free version, that can now create VM images) and that there was no need for any editing of the configuration file (I tried various switches, none of which made any difference to performance). So you can run the CTP under VMWare Player, that’s the good news. The bad news is that it is incredibly slow, bordering on unusable.  However, if it’s the only way you can use the CTP, at least this is an option. VMWare Player configuration I used the latest VMWare Player, 3.0, running under Windows x64 on my HP 6910p laptop with an Intel T7500 Dual Core CPU running at 2.2GHz, 4Gb of memory and using a separate drive for the virtual machines. I created a machine in VMWare Player with a single CPU, 1536 Mb memory and installed Windows 7 x64 from an ISO image.  I then performed a Windows Update, installed VMWare Tools, and finally the Windows Phone Developer Tools CTP After a few warnings about performance, I configured Windows 7 to run with Windows 7 Basic theme rather than use Aero (which is available under VMWare Player as it has a WDDM driver). Timings As a test I first launched Microsoft Visual Studio 2010 Express for Windows Phone, and created a default Windows Phone Application project.  I then clicked the run button, which starts the emulator and then loads the default application onto the emulator. For the second test I left the emulator running, stopped the default application, added a single button to change the page title and redeployed to the already running emulator by clicking the run button.   Test 1 (1st run) Test 2 (emulator already running)   VMWare Player 10 minutes  1 minute   Windows x64 native 1 minute  < 10 seconds   Conclusion You can run the Windows Phone Developer Tools CTP under VMWare Player, but it’s really, really slow and you would have to have very good reasons to try this approach. If you need to keep a development system free of non production code, and the two systems aren’t required to run simultaneously, then I’d consider a boot from VHD option.  Then you can completely isolate the Windows Phone Developer Tools CTP and development environment into a single VHD separate from your main development system.

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  • Setup and Use SpecFlow BDD with DevExpress XAF

    - by Patrick Liekhus
    Let’s get started with using the SpecFlow BDD syntax for writing tests with the DevExpress XAF EasyTest scripting syntax.  In order for this to work you will need to download and install the prerequisites listed below.  Once they are installed follow the steps outlined below and enjoy. Prerequisites Install the following items: DevExpress eXpress Application Framework (XAF) found here SpecFlow found here Liekhus BDD/XAF Testing library found here Assumptions I am going to assume at this point that you have created your XAF application and have your Module, Win.Module and Win ready for usage.  You should have also set any attributes and/or settings as you see fit. Setup So where to start. Create a new testing project within your solution. I typically call this with a similar naming convention as used by XAF, my project name .FunctionalTests (i.e. AlbumManager.FunctionalTests). Add the following references to your project.  It should look like the reference list below. DevExpress.Data.v11.x DevExpress.Persistent.Base.v11.x DevExpress.Persistent.BaseImpl.v11.x DevExpress.Xpo.v11.2 Liekhus.Testing.BDD.Core Liekhus.Testing.BDD.DevExpress TechTalk.SpecFlow TestExecutor.v11.x (found in %Program Files%\DevExpress 2011.x\eXpressApp Framework\Tools\EasyTest Right click the TestExecutor reference and set the “Copy Local” setting to True.  This forces the TestExecutor executable to be available in the bin directory which is where the EasyTest script will be executed further down in the process. Add an Application Configuration File (app.config) to your test application.  You will need to make a few modifications to have SpecFlow generate Microsoft style unit tests.  First add the section handler for SpecFlow and then set your choice of testing framework.  I prefer MS Tests for my projects. Add the EasyTest configuration file to your project.  Add a new XML file and call it Config.xml. Open the properties window for the Config.xml file and set the “Copy to Ouput Directory” to “Copy Always”. You will setup the Config file according to the specifications of the EasyTest library my mapping to your executable and other settings.  You can find the details for the configuration of EasyTest here.  My file looks like this Create a new folder in your test project called “StepDefinitions”.  Add a new SpecFlow Step Definition file item under the StepDefinitions folder.  I typically call this class StepDefinition.cs. Have your step definition inherit from the Liekhus.Testing.BDD.DevExpress.StepDefinition class.  This will give you the default behaviors for your test in the next section. OK.  Now that we have done this series of steps, we will work on simplifying this.  This is an early preview of this new project and is not fully ready for consumption.  If you would like to experiment with it, please feel free.  Our goals are to make this a installable project on it’s own with it’s own project templates and default settings.  This will be coming in later versions.  Currently this project is in Alpha release. Let’s write our first test Remove the basic test that is created for you. We will not use the default test but rather create our own SpecFlow “Feature” files. Add a new item to your project and select the SpecFlow Feature file under C#. Name your feature file as you do your class files after the test they are performing. Writing a feature file uses the Cucumber syntax of Given… When… Then.  Think of it in these terms.  Givens are the pre-conditions for the test.  The Whens are the actual steps for the test being performed.  The Thens are the verification steps that confirm your test either passed or failed.  All of these steps are generated into a an EasyTest format and executed against your XAF project.  You can find more on the Cucumber syntax by using the Secret Ninja Cucumber Scrolls.  This document has several good styles of tests, plus you can get your fill of Chuck Norris vs Ninjas.  Pretty humorous document but full of great content. My first test is going to test the entry of a new Album into the application and is outlined below. The Feature section at the top is more for your documentation purposes.  Try to be descriptive of the test so that it makes sense to the next person behind you.  The Scenario outline is described in the Ninja Scrolls, but think of it as test template.  You can write one test outline and have multiple datasets (Scenarios) executed against that test.  Here are the steps of my test and their descriptions Given I am starting a new test – tells our test to create a new EasyTest file And (Given) the application is open – tells EasyTest to open our application defined in the Config.xml When I am at the “Albums” screen – tells XAF to navigate to the Albums list view And (When) I click the “New:Album” button – tells XAF to click the New Album button on the ribbon And (When) I enter the following information – tells XAF to find the field on the screen and put the value in that field And (When) I click the “Save and Close” button – tells XAF to click the “Save and Close” button on the detail window Then I verify results as “user” – tells the testing framework to execute the EasyTest as your configured user Once you compile and prepare your tests you should see the following in your Test View.  For each of your CreateNewAlbum lines in your scenarios, you will see a new test ready to execute. From here you will use your testing framework of choice to execute the test.  This in turn will execute the EasyTest framework to call back into your XAF application and test your business application. Again, please remember that this is an early preview and we are still working out the details.  Please let us know if you have any comments/questions/concerns. Thanks and happy testing.

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  • On Turning 30&hellip;

    - by MOSSLover
    I know I am not a wise old sage like some people in the community.  I just turned 30 however I feel like all my years looking back have changed me.  My collective experiences and thoughts have given me a different perspective on life recently.  Seven months ago my head was in a gutter and since then a lot of things have happened.  I was always the weird kid in the corner reading Star Trek books.  When I was in elementary school I thought that kids would throw me birthday parties out of pity because I was the poor kid who everyone hated.  I am no longer that person.  I realized that during the worst possible period between my 29th and 30th year when I hit rock bottom.  You all know the insane story as I’ve told it two billion times over.  Honestly it was the best thing that ever happened to me in my life time, because many things would not have happened.  My friends came through for me at every given moment people from all over were checking up on me all over the world.  I fell and I landed on a bunch of people it was awesome.  I landed on family and friends who I thought I was never close enough to talk about these things.  They helped me realize I had a ton of unfulfilled dreams.  I got to move to New York City one of the greatest cities in the universe.  I got to do whatever I wanted without judgment from anyone.  I got to meet some great people at a few meetup groups in the past few months.  I got to meet an awesome person that I have been dating for 3 months.  I am trying to run for the 8 billionth time and keep up with it.  I got to go to Europe and next week for the first time New Orleans.  I got renewed for MVP for 2012.  I am grateful for all the people and things in my life.  I understand that sometimes when things seem bad you can always seek friends and family.  They will always help me.  I have to learn to lean on people sometimes just how they occasionally lean on me.  That is the biggest thing I have learned from the decade of 20 to 30.  I hope that 30 to 40 will be the best decade.  I hope that I can continue to grow.  I will catch you all later. Technorati Tags: Turning 30,Wisdom

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  • Instalar SQL Server 2008

    - by Jason Ulloa
    En este post trataré de explicar los pasos para la instalación de SQL y su posterior configuración. Primer paso: Instalación de las reglas de Soporte (Setup Support Rules) Está será la primer pantalla de instalación con la que nos toparemos cuando tratemos de instalar sql server. En ella, únicamente debemos dar clic en siguiente(next). Paso 2: Selección de las características de instalación de SQL Server (Feature Selection) Este es a mi parecer el paso mas importante del proceso de instalación de SQL, pues es el que nos permitirá seleccionar todos los componentes que este tendrá posteriormente Acá lo importante es: Servicios de bases de datos y herramientas de administración. Todas las demás son plus del motor.   Paso 3: Configuración de la Instancia En este paso, no debemos preocuparnos por nada. Únicamente presionamos siguiente. Paso 4: Requerimientos de espacio en disco Nuevamente en esta instancia no tendremos trabajo alguno. Únicamente es una pantalla informativa de SQL en donde se muestra el espacio actual del disco y el espacio que la instalación de SQL Server consumirá. Presionamos siguiente (next). Paso 5: Configuración del servidor Este paso es uno de los mas importantes, pues en el le indicaremos a SQL que usuario utilizará para autenticarse y levantar cada uno de los servicios que hayamos seleccionado al inicio. Generalmente cuando se trabaja en local el usuario NT AUTHORITY\SYSTEM es la mejor opción. Si en este paso, seleccionamos un usuario con permisos insuficientes SQL nos dará un error. Presionamos siguiente (next) Paso 6: Configuración del motor de bases de datos En este paso, nos enfocaremos en la pestaña Account Provisioning, que será en la que le indiquemos el usuario con el que el motor de bases de datos funcionará por defecto. Lo mas recomendado sería hacer clic en la opción add current user, la cual agregará el usuario de windows  que se encuentre en ese momento. También, podremos seleccionar si queremos el modo de autenticación de SQL o el modo Mixto, que incluye autenticación de SQL Server y Windows. Para nuestra instalación seleccionaremos unicamente modo de autenticación de SQL. Una vez que agregamos el usuario presionamos siguiente (next) Paso 7:  Finalizar la configuración Luego de los pasos anteriores, las demás pantallas no requieren nada especial. Únicamente presionar siguiente y esperar a que la instalación de SQL termine.

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  • Inversion of Control Resource

    - by MarkPearl
    Well… this is going to be another really short blog posting. I have been meaning to read more about IOC containers and came across this blog post which seemed to really explain the concept well – based on Castle Windsor. I also  enjoyed reading the replies about IOC on stack overflow and what it meant. If anyone knows of other good articles that explain the basics really well – wont you comment them to me.

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  • DEEP DIVE MVVM at #MIX11

    - by Laurent Bugnion
    The public (you!) has spoken, and “Deep Dive MVVM” was selected (along with 11 other open call talks) out of 217 proposals. There were 17’000 votes! These are pretty amazing numbers, and believe me when I tell you that I still didn’t completely realize what just happened! I want to really underline the outstanding quality of many of the talks that were proposed. I decided not to reveal my votes, because I just know too many of the candidates and I had only 10 votes but let’s just say that some of my favorites were picked, and some were not, and I really wish that I can see them all either at MIX or in another conference. I already started putting down ideas for the talk (not too many, because I didn’t want to jinx it) and it should be a really great session. We will, as the title shows, dive deep into the subtleties of MVVM, and explore some techniques that allow to overcome some of the hurdles presented by this pattern. This session will be shaped by many emails that I received over the past year, since “Understanding the MVVM pattern” was presented, and offered, for many, a first look into Model-View-ViewModel. So now’s the chance, comment and let me know what topics you would like to discuss. If you had not done so before, go ahead and watch last year’s session, it will be a great preparation. Let’s talk real life development, let’s explore the problems and find solutions. I already have a nice collection of emails asking questions around MVVM and my goal is to answer as many as I can. Leave a comment and I will do my best to answer these as well. The date/time was not announced yet, so watch this space for details. I am really looking forward to seeing many of you in Las Vegas, and for those who cannot make it, don’t worry, all the sessions will be published in video by the amazing MIX team a few hours after the session actually takes place. Thanks for your confidence and in the meantime, Happy Coding! Laurent Laurent Bugnion (GalaSoft) Subscribe | Twitter | Facebook | Flickr | LinkedIn

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  • Silverlight Cream for December 12, 2010 -- #1008

    - by Dave Campbell
    In this Issue: Michael Washington, Samuel Jack, Alfred Astort(-2-), Nokola(-2-), Avi Pilosof, Chris Klug, Pete Brown, Laurent Bugnion(-2-), and Jaime Rodriguez(-2-, -3-). Above the Fold: Silverlight: "Sharing resources and styles between projects in Silverlight" Chris Klug WP7: "Windows Phone Application Performance at Silverlight Firestarter" Jaime Rodriguez Training: "Silverlight View Model (MVVM) - A Play In One Act" Michael Washington Shoutouts: Koen Zwikstra announced the availability of the first Silverlight Spy 4 Preview 1 Gavin Wignall announced the Launch of Festive game built with Silverlight 4, hosted on Azure ... free to play. From SilverlightCream.com: Silverlight View Model (MVVM) - A Play In One Act Michael Washington has an interesting take on writing a blog post with this 'play' version of Silverlight View Models and Expression Blend with a heaping dose of Behaviors added in for flavoring. Build a Windows Phone Game in 3 days – Day 1 Samuel Jack is attempting to build a WP7 game in 3 days including downloading the tools and an XNA book... interesting to see where he's headed wth this venture. 4 of 10 - Make sure your finger can hit the target and text is legible Continuing with a series of tips from the folks reviewing apps for the marketplace via Alfred Astort is this number 4 -- touch target size and legible text. 5 of 10 - Give feedback on touch and progress within your UI Alfred Astort's number 5 is also up, and continues the touch discussion with this tip about giving the user feedback on their touch. Fantasia Painter Released for Windows Phone 7 + Tips Nokola took the release of his Fantasia Painter on WP& as an opportunity not only to blog about the fact that we can go buy it, but has a blog full of hints and tips that he gathered while working on it. Games for Windows Phone 7 Resources: Reducing Load Times, RPG Kit; Other Nokola also blogged about the release of the new games education pack, and gives up the cursor he uses in his videos after being asked... The simplest way to do design-time ViewModels with MVVM and Blend. Avi Pilosof attacks the design-time ViewModel issue in Blend with a 'no code' solution. Sharing resources and styles between projects in Silverlight Chris Klug is talking about sharing resources and styles across a large Silverlight project... near and dear to my heart at this moment. Dynamically Generating Controls in WPF and Silverlight Pete Brown has a post up that's generated some interest... creating controls at runtime... and he's demonstrating several different ways for both Silverlight and WPF #twitter for Windows Phone 7 protips (#wp7) Laurent Bugnion was posting these great tips for Twitter for WP7 and rolled all 16 of them up into a blog post... check them and the app out... Increasing touch surface (#wp7dev) Laurent Bugnion's most current post should be of great interest to WP7 devs... providing more touch surface for your user's fat fingers, err, I mean their fat fingerings :) ... great information and samples ... and interesting it is a fail point as listed by Alfred Astort above. Windows Phone Application Performance at Silverlight Firestarter This material from Jaime Rodriguez actually hit prior to his Firestarter presentation, but should be required reading for anyone doing a WP7 app... great Performance tips from the trenches... slide deck, cheat-sheet, and code. UpdateSourceTrigger on Windows Phone data bindings Another post from Jaime Rodriguez actually went through a couple revisions already.. how about a WP7 TextBox that fires notifications to the ViewModel when the text changes? ... would you like a behavior with that? Details on the Push Notification app limits Jaime Rodriguez has yet another required reading post up on Push Notification limits ... what it really entails and how you can be a good WP7 citizen by the way you program your app. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • Connection Pooling is Busted

    - by MightyZot
    A few weeks ago we started getting complaints about performance in an application that has performed very well for many years.  The application is a n-tier application that uses ADODB with the SQLOLEDB provider to talk to a SQL Server database.  Our object model is written in such a way that each public method validates security before performing requested actions, so there is a significant number of queries executed to get information about file cabinets, retrieve images, create workflows, etc.  (PaperWise is a document management and workflow system.)  A common factor for these customers is that they have remote offices connected via MPLS networks. Naturally, the first thing we looked at was the query performance in SQL Profiler.  All of the queries were executing within expected timeframes, most of them were so fast that the duration in SQL Profiler was zero.  After getting nowhere with SQL Profiler, the situation was escalated to me.  I decided to take a peek with Process Monitor.  Procmon revealed some “gaps” in the TCP/IP traffic.  There were notable delays between send and receive pairs.  The send and receive pairs themselves were quite snappy, but quite often there was a notable delay between a receive and the next send.  You might expect some delay because, presumably, the application is doing some thinking in-between the pairs.  But, comparing the procmon data at the remote locations with the procmon data for workstations on the local network showed that the remote workstations were significantly delayed.  Procmon also showed a high number of disconnects. Wireshark traces showed that connections to the database were taking between 75ms and 150ms.  Not only that, but connections to a file share containing images were taking 2 seconds!  So, I asked about a trust.  Sure enough there was a trust between two domains and the file share was on the second domain.  Joining a remote workstation to the domain hosting the share containing images alleviated the time delay in accessing the file share.  Removing the trust had no affect on the connections to the database. Microsoft Network Monitor includes filters that parse TDS packets.  TDS is the protocol that SQL Server uses to communicate.  There is a certificate exchange and some SSL that occurs during authentication.  All of this was evident in the network traffic.  After staring at the network traffic for a while, and examining packets, I decided to call it a night.  On the way home that night, something about the traffic kept nagging at me.  Then it dawned on me…at the beginning of the dance of packets between the client and the server all was well.  Connection pooling was working and I could see multiple queries getting executed on the same connection and ethereal port.  After a particular query, connecting to two different servers, I noticed that ADODB and SQLOLEDB started making repeated connections to the database on different ethereal ports.  SQL Server would execute a single query and respond on a port, then open a new port and execute the next query.  Connection pooling appeared to be broken. The next morning I wrote a test to confirm my hypothesis.  Turns out that the sequence causing the connection nastiness goes something like this: Make a connection to the database. Open a result set that returns enough records to require multiple roundtrips to the server. For each result, query for some other data in the database (this will open a new implicit connection.) Close the inner result set and repeat for every item in the original result set. Close the original connection. Provided that the first result set returns enough data to require multiple roundtrips to the server, ADODB and SQLOLEDB will start making new connections to the database for each query executed in the loop.  Originally, I thought this might be due to Microsoft’s denial of service (ddos) attack protection.  After turning those features off to no avail, I eventually thought to switch my queries to client-side cursors instead of server-side cursors.  Server-side cursors are the default, by the way.  Voila!  After switching to client-side cursors, the disconnects were gone and the above sequence yielded two connections as expected. While the real problem is the amount of time it takes to make connections over these MPLS networks (100ms on average), switching to client-side cursors made the problem go away.  Believe it or not, this is actually documented by Microsoft, and rather difficult to find.  (At least it was while we were trying to troubleshoot the problem!)  So, if you’re noticing performance issues on slower networks, or networks with slower switching, take a look at the traffic in a tool like Microsoft Network Monitor.  If you notice a high number of disconnects, and you’re using fire-hose or server-side cursors, then try switching to client-side cursors and you may see the problem go away. Most likely, Microsoft believes this to be appropriate behavior, because ADODB can’t guarantee that all of the data has been retrieved when you execute the inner queries.  I’m not convinced, though, because the problem remains even after replacing all of the implicit connections with explicit connections and closing those connections in-between each of the inner queries.  In that case, there doesn’t seem to be a reason why ADODB can’t use a single connection from the connection pool to make the additional queries, bringing the total number of connections to two.  Instead ADO appears to make an assumption about the state of the connection. I’ve reported the behavior to Microsoft and am awaiting to hear from the appropriate team, so that I can demonstrate the problem.  Maybe they can explain to us why this is appropriate behavior.  :)

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  • On StringComparison Values

    - by Jesse
    When you use the .NET Framework’s String.Equals and String.Compare methods do you use an overloStringComparison enumeration value? If not, you should be because the value provided for that StringComparison argument can have a big impact on the results of your string comparison. The StringComparison enumeration defines values that fall into three different major categories: Culture-sensitive comparison using a specific culture, defaulted to the Thread.CurrentThread.CurrentCulture value (StringComparison.CurrentCulture and StringComparison.CurrentCutlureIgnoreCase) Invariant culture comparison (StringComparison.InvariantCulture and StringComparison.InvariantCultureIgnoreCase) Ordinal (byte-by-byte) comparison of  (StringComparison.Ordinal and StringComparison.OrdinalIgnoreCase) There is a lot of great material available that detail the technical ins and outs of these different string comparison approaches. If you’re at all interested in the topic these two MSDN articles are worth a read: Best Practices For Using Strings in the .NET Framework: http://msdn.microsoft.com/en-us/library/dd465121.aspx How To Compare Strings: http://msdn.microsoft.com/en-us/library/cc165449.aspx Those articles cover the technical details of string comparison well enough that I’m not going to reiterate them here other than to say that the upshot is that you typically want to use the culture-sensitive comparison whenever you’re comparing strings that were entered by or will be displayed to users and the ordinal comparison in nearly all other cases. So where does that leave the invariant culture comparisons? The “Best Practices For Using Strings in the .NET Framework” article has the following to say: “On balance, the invariant culture has very few properties that make it useful for comparison. It does comparison in a linguistically relevant manner, which prevents it from guaranteeing full symbolic equivalence, but it is not the choice for display in any culture. One of the few reasons to use StringComparison.InvariantCulture for comparison is to persist ordered data for a cross-culturally identical display. For example, if a large data file that contains a list of sorted identifiers for display accompanies an application, adding to this list would require an insertion with invariant-style sorting.” I don’t know about you, but I feel like that paragraph is a bit lacking. Are there really any “real world” reasons to use the invariant culture comparison? I think the answer to this question is, “yes”, but in order to understand why we should first think about what the invariant culture comparison really does. The invariant culture comparison is really just a culture-sensitive comparison using a special invariant culture (Michael Kaplan has a great post on the history of the invariant culture on his blog: http://blogs.msdn.com/b/michkap/archive/2004/12/29/344136.aspx). This means that the invariant culture comparison will apply the linguistic customs defined by the invariant culture which are guaranteed not to differ between different machines or execution contexts. This sort of consistently does prove useful if you needed to maintain a list of strings that are sorted in a meaningful and consistent way regardless of the user viewing them or the machine on which they are being viewed. Example: Prototype Names Let’s say that you work for a large multi-national toy company with branch offices in 10 different countries. Each year the company would work on 15-25 new toy prototypes each of which is assigned a “code name” while it is under development. Coming up with fun new code names is a big part of the company culture that everyone really enjoys, so to be fair the CEO of the company spent a lot of time coming up with a prototype naming scheme that would be fun for everyone to participate in, fair to all of the different branch locations, and accessible to all members of the organization regardless of the country they were from and the language that they spoke. Each new prototype will get a code name that begins with a letter following the previously created name using the alphabetical order of the Latin/Roman alphabet. Each new year prototype names would start back at “A”. The country that leads the prototype development effort gets to choose the name in their native language. (An appropriate Romanization system will be used for countries where the primary language is not written in the Latin/Roman alphabet. For example, the Pinyin system could be used for Chinese). To avoid repeating names, a list of all current and past prototype names will be maintained on each branch location’s company intranet site. Assuming that maintaining a single pre-sorted list is not feasible among all of the highly distributed intranet implementations, what string comparison method would you use to sort each year’s list of prototype names so that the list is both meaningful and consistent regardless of the country within which the list is being viewed? Sorting the list with a culture-sensitive comparison using the default configured culture on each country’s intranet server the list would probably work most of the time, but subtle differences between cultures could mean that two different people would see a list that was sorted slightly differently. The CEO wants the prototype names to be a unifying aspect of company culture and is adamant that everyone see the the same list sorted in the same order and there’s no way to guarantee a consistent sort across different cultures using the culture-sensitive string comparison rules. The culture-sensitive sort would produce a meaningful list for the specific user viewing it, but it wouldn’t always be consistent between different users. Sorting with the ordinal comparison would certainly be consistent regardless of the user viewing it, but would it be meaningful? Let’s say that the current year’s prototype name list looks like this: Antílope (Spanish) Babouin (French) Cahoun (Czech) Diamond (English) Flosse (German) If you were to sort this list using ordinal rules you’d end up with: Antílope Babouin Diamond Flosse Cahoun This sort is no good because the entry for “C” appears the bottom of the list after “F”. This is because the Czech entry for the letter “C” makes use of a diacritic (accent mark). The ordinal string comparison does a byte-by-byte comparison of the code points that make up each character in the string and the code point for the “C” with the diacritic mark is higher than any letter without a diacritic mark, which pushes that entry to the bottom of the sorted list. The CEO wants each country to be able to create prototype names in their native language, which means we need to allow for names that might begin with letters that have diacritics, so ordinal sorting kills the meaningfulness of the list. As it turns out, this situation is actually well-suited for the invariant culture comparison. The invariant culture accounts for linguistically relevant factors like the use of diacritics but will provide a consistent sort across all machines that perform the sort. Now that we’ve walked through this example, the following line from the “Best Practices For Using Strings in the .NET Framework” makes a lot more sense: One of the few reasons to use StringComparison.InvariantCulture for comparison is to persist ordered data for a cross-culturally identical display That line describes the prototype name example perfectly: we need a way to persist ordered data for a cross-culturally identical display. While this example is 100% made-up, I think it illustrates that there are indeed real-world situations where the invariant culture comparison is useful.

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  • Platform Builder: PBWorkspaces CESysgen.bat Not Used?

    - by Bruce Eitman
    One of the things that I like about Windows CE is that I am always learning new things, but in this case it is a bit disturbing. We working with Multi UI (MUI) this week and discovered some problems with Windows CE 5.0 and Chinese language support. These problems don’t exist in CE 6.0. The problem was that in the batch files in Public\CEBASE\oak\misc, specifically weceshellfe.bat, some of the shell components needed are only included if certain LOCALs are selected. English is not one of them, I suppose this is because someone didn’t think that we would ever use them and English – doh. No problem, just work around this in PBWorkspaces\<workspace>\WINCE500\<BPS>\cesysgen.bat. But that didn’t work. After a lot of trial and error, what I determined is that this cesysgen.bat isn’t actually used by Platform Builder any more.  Instead, in that same folder is a <workspace>.bat file that is called by Public\CEBASE\oak\misc\cesysgen.bat. That leads to some new problems though, but solvable, in that what I really wanted to do was add a fix after the batch files in CEBASE run, but <workspace>.bat runs before the other batch files in CEBASE. So what I finally came up with was to add the fix to the PASS2 handling in <workspace>.bat. Copyright © 2010 – Bruce Eitman All Rights Reserved

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  • WP7 &ndash; Oh, You Wanted to Develop On Your New Phone? That&rsquo;ll Cost Ya!

    - by D'Arcy Lussier
    Had an interesting Twitter convo today about WP7 development. Question was raised on how to use a WP7 device as the deployment target from within VS.NET. Thinking that this would be an *obvious* question, I replied that you need to set the right value in one of the drop lists in the IDE… I did this, hooked up my device, then tried to run my app, just as a final test that it was as easy as I thought it would be. It wasn’t. So first, your phone can’t be locked, so make sure you unlock it. Also, don’t kill the Zune software when you notice it automagically started – its needed for VS.NET to deploy to your device. Finally, you need to register your device for development. Aiden Caine has a great article on what you need to do for this, but in a nutshell you need to launch the Windows Phone Developer Registration program found in the Windows Phone Developer Tools folder. Now, here’s the catch to all of this: You must have a Windows Phone AppHub account. As in paid account. That’s right – to do development on your actual device, you need to have a $99 ($120 in Canada) AppHub developer membership. Now, I get this – if Microsoft didn’t put this restriction, then they’d be back in Mobile 6.x land where anyone could install whatever app to whoever, whenever, and without any standards being upheld. This is the same thing that Apple does with their marketplace, its not something unprecedented. But, it is something that will be new to the majority of Microsoft developers that have lived without application restrictions for years. Now, if you’re in the US then you have the opportunity to get a rebate on that $99 fee from Microsoft if you publish two apps successfully. You can get more details on this offer here.

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  • Independence Day for Software Components &ndash; Loosening Coupling by Reducing Connascence

    - by Brian Schroer
    Today is Independence Day in the USA, which got me thinking about loosely-coupled “independent” software components. I was reminded of a video I bookmarked quite a while ago of Jim Weirich’s “Grand Unified Theory of Software Design” talk at MountainWest RubyConf 2009. I finally watched that video this morning. I highly recommend it. In the video, Jim talks about software connascence. The dictionary definition of connascence (con-NAY-sense) is: 1. The common birth of two or more at the same time 2. That which is born or produced with another. 3. The act of growing together. The brief Wikipedia page about Connascent Software Components says that: Two software components are connascent if a change in one would require the other to be modified in order to maintain the overall correctness of the system. Connascence is a way to characterize and reason about certain types of complexity in software systems. The term was introduced to the software world in Meilir Page-Jones’ 1996 book “What Every Programmer Should Know About Object-Oriented Design”. The middle third of that book is the author’s proposed graphical notation for describing OO designs. UML became the standard about a year later, so a revised version of the book was published in 1999 as “Fundamentals of Object-Oriented Design in UML”. Weirich says that the third part of the book, in which Page-Jones introduces the concept of connascence “is worth the price of the entire book”. (The price of the entire book, by the way, is not much – I just bought a used copy on Amazon for $1.36, so that was a pretty low-risk investment. I’m looking forward to getting the book and learning about connascence from the original source.) Meanwhile, here’s my summary of Weirich’s summary of Page-Jones writings about connascence: The stronger the form of connascence, the more difficult and costly it is to change the elements in the relationship. Some of the connascence types, ordered from weak to strong are: Connascence of Name Connascence of name is when multiple components must agree on the name of an entity. If you change the name of a method or property, then you need to change all references to that method or property. Duh. Connascence of name is unavoidable, assuming your objects are actually used. My main takeaway about connascence of name is that it emphasizes the importance of giving things good names so you don’t need to go changing them later. Connascence of Type Connascence of type is when multiple components must agree on the type of an entity. I assume this is more of a problem for languages without compilers (especially when used in apps without tests). I know it’s an issue with evil JavaScript type coercion. Connascence of Meaning Connascence of meaning is when multiple components must agree on the meaning of particular values, e.g that “1” means normal customer and “2” means preferred customer. The solution to this is to use constants or enums instead of “magic” strings or numbers, which reduces the coupling by changing the connascence form from “meaning” to “name”. Connascence of Position Connascence of positions is when multiple components must agree on the order of values. This refers to methods with multiple parameters, e.g.: eMailer.Send("[email protected]", "[email protected]", "Your order is complete", "Order completion notification"); The more parameters there are, the stronger the connascence of position is between the component and its callers. In the example above, it’s not immediately clear when reading the code which email addresses are sender and receiver, and which of the final two strings are subject vs. body. Connascence of position could be improved to connascence of type by replacing the parameter list with a struct or class. This “introduce parameter object” refactoring might be overkill for a method with 2 parameters, but would definitely be an improvement for a method with 10 parameters. This points out two “rules” of connascence:  The Rule of Degree: The acceptability of connascence is related to the degree of its occurrence. The Rule of Locality: Stronger forms of connascence are more acceptable if the elements involved are closely related. For example, positional arguments in private methods are less problematic than in public methods. Connascence of Algorithm Connascence of algorithm is when multiple components must agree on a particular algorithm. Be DRY – Don’t Repeat Yourself. If you have “cloned” code in multiple locations, refactor it into a common function.   Those are the “static” forms of connascence. There are also “dynamic” forms, including… Connascence of Execution Connascence of execution is when the order of execution of multiple components is important. Consumers of your class shouldn’t have to know that they have to call an .Initialize method before it’s safe to call a .DoSomething method. Connascence of Timing Connascence of timing is when the timing of the execution of multiple components is important. I’ll have to read up on this one when I get the book, but assume it’s largely about threading. Connascence of Identity Connascence of identity is when multiple components must reference the entity. The example Weirich gives is when you have two instances of the “Bob” Employee class and you call the .RaiseSalary method on one and then the .Pay method on the other does the payment use the updated salary?   Again, this is my summary of a summary, so please be forgiving if I misunderstood anything. Once I get/read the book, I’ll make corrections if necessary and share any other useful information I might learn.   See Also: Gregory Brown: Ruby Best Practices Issue #24: Connascence as a Software Design Metric (That link is failing at the time I write this, so I had to go to the Google cache of the page.)

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  • Using Microsoft benefits to kickstart your own development

    - by douglasscott
    Working for a big company I enjoy all the Microsoft tools I can consume. I also have the infrastructure to support my development and team communication.I recently helped form a small consulting team that requires the same type of resources. That is when the realization of the true cost of Microsoft's professional development tools really hit me.Okay, I'll just bite the bullet and get what I'm used to working with to do high quality development projects.  After just a few minutes of looking at street prices and doing some quick math I began to have a realization...doing this right isn't cheap!Luckily there is help.  If you are willing to get your ducks in a row and do a little documentation  Microsoft will give you some developer manna. I went to the Bizspark site and completed the application which describes your company profile and services offer.  The approval process took about a week.  Voila, A Visual Studio Ultimate with MSDN Subscription!As a start-up Office 365 can be a great solution for all your team communications.  I also enrolled in the Microsoft Cloud Essentials program as part of a business track.  Once you meet the Cloud Essentials requirements you will receive 250 Office 365 licenses! This includes Office and hosted Exchange, Lync, and SharePoint.Take advantage of what Microsoft has to offer for your start-up.  It just may surprise you and save you a lot of your start-up budget.

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  • Is Nick Clegg a man or a mouse?

    - by BizTalk Visionary
    Well we got the hung election so many of us wanted! I believe it really is time for electoral change. Why? Consider: the ConMen under Cameroon have polled 36% of the great British voting public – well those that got to vote!! That means 64% of us don’t want him as PM. So what gives him the right to govern? Well an ancient voting system ideal for two party politics. But for the last 30 years we’ve had multi-party politics and going forward we may see 4 or 5 parties stepping up. We have to set in place a system that makes this work! So what does that mean today: Nick has a golden chance to push forward the case and in fact the absolute right for the change. He needs to keep this in mind when he discusses coalition with both Labour and the ConMen. So the mouse approach: Decides it is only fair to side with the ‘biggest’ vote and team up with the ConMen. Chances of electoral change? Big fat zero. Chance of achieving any of his other targets. Big fat zero. Why? Simple (as the Meer Kat would say). Cameroon needs to become PM by hook or crook. Once PM he holds the whip hand. Labour will dump Brown and head off into Leadership race land, Clegg will be knocking on number 10, having meaningless meetings and seeing no reward. Finally while Labour is at 6‘s and 7’s  the ‘new’ PM will call a new election, gain the majority they need and dump luckless Nick!! So the man approach: Team up with Labour. As one of the conditions – Brown to go. Run referendum for PR. Get PR through then force Labour to have new election under PR. Nick now hero and should be in a much better place following a PR election!! The man bit is standing up to the media attack for supporting Labour. Come Nick – be a man for a better Britain!!

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  • Is Nick Clegg a man or a mouse?

    - by BizTalk Visionary
    Well we got the hung election so many of us wanted! I believe it really is time for electoral change. Why? Consider: the ConMen under Cameroon have polled 36% of the great British voting public – well those that got to vote!! That means 64% of us don’t want him as PM. So what gives him the right to govern? Well an ancient voting system ideal for two party politics. But for the last 30 years we’ve had multi-party politics and going forward we may see 4 or 5 parties stepping up. We have to set in place a system that makes this work! So what does that mean today: Nick has a golden chance to push forward the case and in fact the absolute right for the change. He needs to keep this in mind when he discusses coalition with both Labour and the ConMen. So the mouse approach: Decides it is only fair to side with the ‘biggest’ vote and team up with the ConMen. Chances of electoral change? Big fat zero. Chance of achieving any of his other targets. Big fat zero. Why? Simple (as the Meer Kat would say). Cameroon needs to become PM by hook or crook. Once PM he holds the whip hand. Labour will dump Brown and head off into Leadership race land, Glegg will be knocking on number 10, having meaningless meetings and seeing no reward. Finally while Labour is at 6‘s and 7’s  the ‘new’ PM will call a new election, gain the majority they need and dump luckless Nick!! So the man approach: Team up with Labour. As one of the conditions – Brown to go. Run referendum for PR. Get PR through then force Labour to have new election under PR. Nick now hero and should be in a much better place following a PR election!! The man bit is standing up to the media attack for supporting Labour. Come Nick – be a man for a better Britain!!

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