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• Silverlight Cream for January 15, 2011 -- #1028

  - by Dave Campbell

  Note to #1024 Swag Winners: I'm sending emails to the vendors Sunday night, thanks for your patience (a few of you have not contacted me yet) In this Issue: Ezequiel Jadib, Daniel Egan(-2-), Page Brooks, Jason Zander, Andrej Tozon, Marlon Grech, Jonathan van de Veen, Walt Ritscher, Jesse Liberty, Jeremy Likness, Sacha Barber, William E. Burrows, and WindowsPhoneGeek. Above the Fold: Silverlight: "Building a Radar Control in Silverlight - Part 1" Page Brooks WP7: "Tutorial: Dynamic Tile Push Notification for Windows Phone 7" Jason Zander Training: "WP7 Unleashed Session I–Hands on Labs" Daniel Egan From SilverlightCream.com: Silverlight Rough Cut Editor SP1 Released Ezequiel Jadib has an announcement about the Rough Cut Editor SP1 release, and he walks you through the content, installation and a bit of the initial use. WP7 Unleashed Session I–Hands on Labs Daniel Egan posted Part 1 of 3 of a new WP7 HOL ... video online and material to download... get 'em while they're hot! WP7 Saving to Media Library Daniel Egan has another post up as well on saving an image to the media library... not the update from Tim Heuer... all good info Building a Radar Control in Silverlight - Part 1 This freakin' cool post from Page Brooks is the first one of a series on building a 'Radar Control' in Silverlight ... seriously, go to the bottom and run the demo... I pretty much guarantee you'll take the next link which is download the code... don't forget to read the article too! Tutorial: Dynamic Tile Push Notification for Windows Phone 7 Jason Zander has a nice-looking tutorial up on dynamic tile notifications... good diagrams and discussion and plenty of code. Reactive.buffering.from event. Andrej Tozon is continuing his Reactive Extensions posts with this one on buffering: BufferWithTime and BufferWIthCount ... good stuff, good write-up, and the start of a WP7 game? MEFedMVVM with PRISM 4 Marlon Grech combines his MEFedMVVM with Prism 4, and says it was easy... check out the post and the code. Adventures while building a Silverlight Enterprise application part #40 Jonathan van de Veen has a discussion up about things you need to pay attention to as your project gets close to first deployment... lots of good information to think about Silverlight or not. Customize Windows 7 Preview pane for XAML files Walt Ritscher has a (very easy) XAML extension for Windows 7 that allows previewing of XAML files in an explorer window... as our UK friends say "Brilliant!" Entity Framework Code-First, oData & Windows Phone Client From the never-ending stream of posts that is Jesse Liberty comes this one on EF Code-First... so Jesse's describing Code-First and OData all wrapped up about a WP7 app Sterling Silverlight and Windows Phone 7 Database Triggers and Auto-Identity Sterling and Database Triggers sitting in a tree... woot for WP7 from Jeremy Likness... provides database solutions including Validation, Data-specific concerns such as 'last modified', and post-save processing ... all good, Jeremy! A Look At Fluent APIs Sacha Barber has a great post up that isn't necessarily Silverlight, but is it? ... we've been hearing a lot about Fluent APIs... read on to see what the buzz is. Windows Phone 7 - Part 3 - Final Application William E. Burrows has Part 3 of his WP7 tutorial series up... this one completing the Golf Handicap app by giving the user the ability to manage scores. User Control vs Custom Control in Silverlight for WP7 WindowsPhoneGeek has a great diagram and description-filled post up on User Controls and Custom Controls in WP7... good external links too. 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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• Is "White-Board-Coding" inappropriate during interviews?

  - by Eoin Campbell

  This is a somewhat subjective quesiton but I'd love to hear feedback/opinions from either interviewers/interviewees on the topic. We split our technical part into 4 parts. Write Code, Read & Analyse Code, Design Session & Code on the white board. For the last part what we ask interviewees to do is write a small code snippet (4-5 lines) on the whiteboard and explain as they go through it. Let me be clear the purpose is not to catch people out. We're not looking for perfect syntax. Hell it can even be pseudo-code. but the point is to give them a very simple problem and see if their brain can communicate the solution to us. By simple problems I mean "Reverse a string", "FizzBuzz" etc... EDIT Just with regards the comment about Pseudo-Code. We always ask for an explicit language first. We;re a .NET C# house. we've only said "pseudo-code" where someone has been blanking/really struggling with the code. My question is "Is it innappropriate / unreasonable to expect a programmer to write a code snippet on a whiteboard during an interview ?"

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• Silverlight Cream Top Posted Authors July to December, 2010

  - by Dave Campbell

  It's past the first of January, and it's now time to recognize devs that have a large number of posts in Silverlight Cream. Ground Rules I pick what posts are on the blog Only posts that go in the database are included The author has to appear in SC at least 4 of the 6 months considered I averaged the monthly posts and am only showing Authors with an average greater than 1. Here are the Top Posted Authors at Silverlight Cream for July 1, 2010 through December 31, 2010: It is my intention to post a new list sometime shortly after the 1st of every month to recognize the top posted in the previous 6 months, so next up is January 1! Some other metrics for Silverlight Cream: At the time of this posting there are 7304 articles aggregated and searchable by partial Author, partial Title, keywords (in the synopsis), or partial URL. There are also 118 tags by which the articles can be searched. This is an increase of 317 posts over last month. At the time of this posting there are 783 articles tagged wp7dev. This is an increase of 119 posts over last month, or over a third of the posts added. Stay in the 'Light!

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• SilverlightShow for Feb 21 - 27, 2011

  - by Dave Campbell

  Check out the Top Five most popular news at SilverlightShow for Feb 21 - 27, 2011. Here are the top 5 news on SilverlightShow for last week: An Interview with Jeff Wilcox about his work with Silverlight and the Silverlight Toolkit Free SilverlightShow Webinar - Building LOB Apps with Silverlight and WCF Data Services ReSharper C# snippet for MVVM ViewModel Property creation Silverlight 4: Creating useful base classes for your views and viewmodels with PRISM 4 Free SilverlightShow Webinar: WCF RIA Services Validation Visit and bookmark SilverlightShow. Stay in the 'Light

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• Why is NDA so hard to understand?

  - by Dave Campbell

  Maybe this concept is simpler for me because of all the jobs I've been on over the years requiring security clearances. I've signed quite a few NDA forms. Some for big companies, some for small, but the meaning of "NDA" remains constant: Non-Disclosure Agreement. To me, that takes no further explanation, but apparently it's confusing to some people, and I don't understand how you can be confused. The papers I signed with the U.S. Army in 1970 read "10 years and $10,000" for a violation... can't imagine what it's up to now, but THAT is a strict NDA :) So those things I've been told, I cannot talk about, period. Even if the entire world knows about them, I cannot speak about them until the information goes off NDA. An example was a Silverlight release a while back. It might have been Silverlight 3, I don't remember. Everyone was anxiously awaiting the release so they could post their material. Of course the entire world knew it was coming out and imminently so. Some enterprising folks had even found the bits on a server before the official announcement. So then the situation became: everyone knew about it, some were even coding with it and blogging about it and yet we couldn't talk about it. Scott Guthrie's posting about it opened the flood gates and then it went off NDA, but up until that moment, we were locked. Sitting out on the edge you're uninstalling and re-installing all the time and you get frustrated when things that used to work don't, but hey... those bits were still warm when you got 'em, and that's the fun. But that fun comes at a price, and the price is the NDA. Awkward yes, confusing no... See you at MIX10, and Stay in the 'Light! MIX10

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• Silverlight Cream Monday WP7 App Review # 2

  - by Dave Campbell

  Today's Review (alphabetic order): GooNews, Grocery Shopping List, Need for Speed, SurfCube, and United Nations News. I'm a day late if these are going to be 'Monday' posts, but there are lots of apps, lots of goodness, and lots of email, so I might try to do 2 a week, we'll see. So once again I've got a small review of 5 apps that are either on my phone or have been. Disclaimers at the end. In this Issue:   GooNews is a very cool app from Shawn Wildermuth (AgiliTrain). I don't know if he uses this as a demo during his instruction, but it definitely serves a purpose... wanna pick up the top news items from Google on a never-ending basis? ... this is it. You can add your own keyword searches, and send stories to InstaPaper or share via email. I like this because it brings me the news quickly and updated, and works great. GooNews is by AgiliTrain and is Free This was a request by the author, and actually surprised me. I'm a big one for lists, but I would have just done a OneNote list to SkyDrive and to my phone. This app is a lot more than that, but will take you some setup to make it be 'yours'. For obvious reasons, there are no unit prices on things, so you have to set that up to get some idea of the cost of what you're shopping for. But if you do that, you'll get a nice total. Lots of thought went into the various categories and you can add your own. There's a bit of animation on the category selection that's nice. He seems to have covered all the bases necessary to use this, even shopping 'plans' that can be saved, and emailing of lists. As I said, I'm more of a raw list person, but if you take the time to set this up, it should work very nicely for you. Grocery Shopping List is by Grocery Shopper and is $0.99 ($1.99 after Feb 1) with a free trial. This was my 2nd commercial game I bought, and the one I've played the most. I ran the trial, thought it worked great, and bought it. I've had a lot of fun with this... there's no gas pedal.. your foot is in the carbeurator from the GO!, and unless you wanna tap the screen and brake like a little girl, just hang onto the steering wheel (the phone), and guide your way through. Hours of fun and challenges here. I like this because it's got some challenge to it, and the cars seem to be very realistic in their reactions. Need for Speed Undercover is by Electronic Arts is $4.99 and has a free trial. SurfCube Browser is another app by the folks that did the GuitarTuner I reviewed on Monday. You have to see SurfCube to believe it. You've probably seen the YouTube video, if not check SilverlightCream number 1017. The app works very solid, and just as the video demonstrates. I downloaded and tried this, and it immediately did 2 things: bought it, and pinned it to my start page. I like this because it's fun to work with, and it works great as a browser. I'm about *this* close to replacing the IE tile on my front page with SurfCube. SurfCube Browser is by Kinabalu Innovation Limited and is $1.99 and has a free trial. Coming in with another News app is United Nations News by Justin Angel. This is definitely a news aggregator for 'grown ups'... news, photos, videos, and radio broadcsts from the international community all in one very slick app. This is an amazingly well thought-out and complete app. Even better yet, Justin has the code on CodePlex. A very well-done International news aggregator. United Nations News is by Justin Angel and is Free. A few disclaimers: Feel free to write me about your app and tell me about it. While it would be very cool to receive a whole bunch of xap files to review, at this point, for technical reasons, I'm unable to side-load my device. Since I plan on only doing this one day a week (twice if I find time), and only 5, I may never get caught up, so if you send me some info, be patient. Re: games ... remember I'm old... I'm from the era of Colossal Cave and Zork. Duke-Nukem 2D and Captain Comic were awesome. I don't own an XBOX or any other game system, so take game reviews from my perspective -- who knows, it may be refreshing :) I won't pay for an app or game just to try it. If you expect me to test-drive your app, it's going to have to have a Free Trial. I'm still playing with the format, comments are welcome. I decided I should alphabetize the list today... so there's no order implied Let me know what you think of the idea of doing reviews, or the layout/whatever, and 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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• Silverlight Cream Top Posted Authors August, 2010 to January, 2011

  - by Dave Campbell

  It's *way* past the first of February, and it's now time to recognize devs that have a large number of posts in Silverlight Cream. Ground Rules I pick what posts are on the blog Only posts that go in the database are included The author has to appear in SC at least 4 of the 6 months considered I averaged the monthly posts and am only showing Authors with an average greater than 1. Here are the Top Posted Authors at Silverlight Cream for August 1, 2010 through January 31, 2011: It is my intention to post a new list sometime shortly after the 1st of every month to recognize the top posted in the previous 6 months, so next up is March 1! Some other metrics for Silverlight Cream: At the time of this posting there are 7304 articles aggregated and searchable by partial Author, partial Title, keywords (in the synopsis), or partial URL. There are also 118 tags by which the articles can be searched. This is an increase of 265 posts over last month. At the time of this posting there are 783 articles tagged wp7dev. This is an increase of 155 posts over last month, or over half of the posts added. Stay in the 'Light!

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• SilverlightShow for November 14 - 20, 2011

  - by Dave Campbell

  Check out the Top Five most popular news at SilverlightShow for SilverlightShow Top 5 News for November 14 - 20, 2011. Here are the top 5 news on SilverlightShow for last week: Why Adobe had to Kill Flash Player for Mobile; and Silverlight, Flex, HTML5 parallels PhoneGap on Windows Phone Tips 10 tips about porting Silverlight apps to WinRT/Metro style apps (Part 1) Microsoft reportedly rolling out 7740 OS update for Windows Phone The WinRT Genome Project Visit and bookmark SilverlightShow. Stay in the 'Light 

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• Use your own domain email and tired of SPAM? SPAMfighter FTW

  - by Dave Campbell

  I wouldn't post this if I hadn't tried it... and I paid for it myself, so don't anybody be thinking I'm reviewing something someone sent me! Long ago and far away I got very tired of local ISPs and 2nd phone lines and took the plunge and got hooked up to cable... yeah I know the 2nd phone line concept may be hard for everyone to understand, but that's how it was in 'the old days'. To avoid having to change email addresses all the time, I decided to buy a domain name, get minimal hosting, and use that for all email into the house. That way if I changed providers, all the email addresses wouldn't have to change. Of course, about a dozen domains later, I have LOTS of pop email addresses and even an exchange address to my client's server... times have changed. What also has changed is the fact that we get SPAM... 'back in the day' when I was a beta tester for the first ISP in Phoenix, someone tried sending an ad to all of us, and what he got in return for his trouble was a bunch of core dumps that locked up his email... if you don't know what a core dump is, ask your grandfather. But in today's world, we're all much more civilized than that, and as with many things, the criminals seem to have much more rights than we do, so we get inundated with email offering all sorts of wild schemes that you'd have to be brain-dead to accept, but yet... if people weren't accepting them, they'd stop sending them. I keep hoping that survival of the smartest would weed out the mental midgets that respond and then the jumk email stop, but that hasn't happened yet anymore than finding high-quality hearing aids at the checkout line of Safeway because of all the dimwits playing music too loud inside their car... but that's another whole topic and I digress. So what's the solution for all the spam? And I mean *all*... on that old personal email address, I am now getting over 150 spam messages a day! Yes I know that's why God invented the delete key, but I took it on as a challenge, and it's a matter of principle... why should I switch email addresses, or convert from [email protected] to something else, or have all my email filtered through some service just because some A-Hole somewhere has a site up trying to phish Ma & Pa Kettle (ask your grandfather about that too) out of their retirement money? Well... I got an email from my cousin the other day while I was writing yet another email rule, and there was a banner on the bottom of his email that said he was protected by SPAMfighter. SPAMfighter huh.... so I took a look at their site, and found yet one more of the supposed tools to help us. But... I read that they're a Microsoft Gold Partner... and that doesn't come lightly... so I took a gamble and here's what I found: I installed it, and had to do a couple things: 1) SPAMfighter stuffed the SPAMfighter folder into my client's exchange address... I deleted it, made a new SPAMfighter folder where I wanted it to go, then in the SPAMfighter Clients settings for Outlook, I told it to put all spam there. 2) It didn't seem to be doing anything. There's a ribbon button that you can select "Block", and I did that, wondering if I was 'training' it, but it wasn't picking up duplicates 3) I sent email to support, and wrote a post on the forum (not to self: reply to that post). By the time the folks from the home office responded, it was the next day, and first up, SPAMfighter knocked down everything that came through when Outlook opend... two thumbs up! I disabled my 'garbage collection' rule from Outlook, and told Outlook not to use the junk folder thinking it was interfering. 4) Day 2 seemed to go about like Day 1... but I hung in there. 5) Day 3 is now a whole new day... I had left Outlook open and hadn't looked at the PC since sometime late yesterday afternoon, and when I looked this morning, *every bit* of spam was in the SPAMfighter folder!! I'm a new paying customer After watching SPAMfighter work this morning, I've purchased a 1-year license, and I now can sit and watch as emails come in and disappear from my inbox into the SPAMfighter folder. No more continual tweaking of the rules. I've got SPAMfighter set to 'Very Hard' filtering... personally I'd rather pull the few real emails out of the SPAMfighter folder than pull spam out of the real folders. Yes this is simply another way of using the delete key, but you know what? ... it feels good :) Here's a screenshot of the stats after just about 48 hours of being onboard: Note that all the ones blocked by me were during Day 1 and 2... I've blocked none today, and everything is blocked. Stay in the 'Light!

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• Silverlight Cream Top Posted Authors September, 2010 to February, 2011

  - by Dave Campbell

  It's a bit past the first of March, and it's now time to recognize devs that have a large number of posts in Silverlight Cream. Ground Rules I pick what posts are on the blog Only posts that go in the database are included The author has to appear in SC at least 4 of the 6 months considered I averaged the monthly posts and am only showing Authors with an average greater than 1. Here are the Top Posted Authors at Silverlight Cream for September 1, 2010 through February 28, 2011: It is my intention to post a new list sometime shortly after the 1st of every month to recognize the top posted in the previous 6 months, so next up is March 1! Some other metrics for Silverlight Cream: At the time of this posting there are 7672 articles aggregated and searchable by partial Author, partial Title, keywords (in the synopsis), or partial URL. There are also 118 tags by which the articles can be searched. This is an increase of 368 posts over last month. At the time of this posting there are 984 articles tagged wp7dev. This is an increase of 201 posts over last month, or 54% of the posts added. Stay in the 'Light!

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• SilverlightShow for March 7-13, 2011

  - by Dave Campbell

  Check out the Top Five most popular news at SilverlightShow for March 7-13, 2011. Here are the top 5 news on SilverlightShow for last week: SilverlightShow EcoContest Grand Prize Winner and First Runner-up Selected WCF RIA Services V1.0 SP1 Visual Studio 2010 enhancements Upcoming Silverlight Show Webinar: Switching on the Cloud for Silverlight 30+ Projects Will be at Open Source Fest at MIX11 Visit and bookmark SilverlightShow. Stay in the 'Light

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• SilverlightShow for Jan 7-13, 2011

  - by Dave Campbell

  Check out the Top Five most popular news at SilverlightShow for Feb 7-13, 2011. Here's SilverlightShow top 5 news for last week: Data Binding in Silverlight with RIA and EntityFramework - Part 1 (Displaying Data) Simple Silverlight MVVM Base Class This Thursday: Free Windows Phone 7 Webinar by Telerik A Circular ProgressBar Style using an Attached ViewModel Using SilverLight 4 Line Of Business Application Development Template (LOB) Visit and bookmark SilverlightShow. Stay in the 'Light

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• SilverlightShow for 20-26 Dec 2010

  - by Dave Campbell

  Check out the Top Five most popular news at SilverlightShow for last week (20 - 26 Dec 2010). The most popular news for last week is Ryan Alford's solution on handling an error in Silverlight 4 when using Entity Framework 4, followed by Jeremy Likness' video on building an RSS Feed Reader in Silverlight. Here is SilverlightShow's weekly top 5: Silverlight 4 - Productivity Power Tools and EF4 A Silverlight MVVM Feed Reader from Scratch in 30 Minutes Resizable Grid Using Thumb Controls A Simplified Grid Markup for Silverlight and WPF Announcing the Winner of Telerik Silverlight controls in SilverlightShow Post-webinar Survey Visit and bookmark SilverlightShow. Stay in the 'Light

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• SilverlightShow for November 07 - 13, 2011

  - by Dave Campbell

  Check out the Top Five most popular news at SilverlightShow for SilverlightShow Top 5 News for November 07 - 13, 2011. Here are the top 5 news on SilverlightShow for last week: Will there be a Silverlight 6 (and does it matter)? Silverlight 5 - the end of the line Microsoft confirms move to align Windows & Windows Phone JavaScript, MVVM and Silverlight - Papa's Perspective How TO: Virtualizing WrapPanel .NET Visit and bookmark SilverlightShow. Stay in the 'Light 

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• SilverlightShow for June 13 - 19, 2011

  - by Dave Campbell

  Check out the Top Five most popular news at SilverlightShow for SilverlightShow Top 5 News for June 13 - 19, 2011. Here are the top 5 news on SilverlightShow for last week: Panorama "Windows 8" template for Silverlight Premature cries of Silverlight / WPF skill loss. Windows 8 supports all programming models HTML 5 & Silverlight 5 10 Silverlight 5 Demos Recording of recent SilverlightShow webinar 'Blend for Silverlight Developers' now available online Visit and bookmark SilverlightShow. Stay in the 'Light

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• Two Copies of "Silverlight 5 In Action" to Give Away and a FREE chapter!

  - by Dave Campbell

  I know most of you have seen my post from Tuesday where I talked about giving away 2 copies of Pete's book on Monday morning July 18th. Well... I'm repeating it, because it's a smoking deal... for the cost of an email you too can take a shot at getting Pete's latest released "Silverlight 5 In Action" free. 2 Important Pieces of Information 1) The deadline: midnight Sunday night, July 17, 2012, Arizona time... if you know me, you know I've lived here too long and am timezone stupid... so don't make me calculate it out :) 2) The how: I have a special email address for submittals: mailto:[email protected]?Subject=Giveaway. 3) oh yeah... I lied about only 2 pieces of info... number 3 ... there may be other surprises on Monday morning... 'nuff said 4) and just to pump up the volume on the book... how about a Free chapter you can read right here on Working with RSS and Atom! 5) send me an email and Stay in the 'Light!

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• Is the copy/paste approach professionally viable when working with the Google Maps API?

  - by Ian Campbell

  I find that I understand much of the Javascript concepts used in the Google Maps API code, but then again there is quite a bit that is way over my head in syntax. For example, the geocoder syntax seems to be of Ajax form, though I don't understand what is happening under the hood (especially with lines like results[0].geometry.location). I am able to modify the body of if (status == google.maps.GeocoderStatus.OK) for different purposes though. So, being that I am able to take various code from the Developer's Guide and rework it to an extent for my own purposes, all the while not fully understanding what Google Maps is actually doing, does this make me a copy-paste programmer? Is this a bad practice, or is this professionally viable? I am, of course, interested in learning as much as I can, but what if time-constraints outweigh the learning process?

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• SilverlightShow for 13-19 Dec 2010

  - by Dave Campbell

  I still haven't updated my friends at SilverlightShow, but I have their list from last week. Check out the Top Five most popular news at SilverlightShow for last week (13 - 19 Dec 2010). First place for the past week takes the post about Mahesh Sabnis' sample Line-Of-Business app using Silverlight 4. A lot of clicks and downloads got also the recording of SilverlightShow webinar 'Building an end-to-end Silverlight 4 Application' presented by Gill Cleeren on Dec 15th. Here is SilverlightShow's weekly top 5: Line of Business (LOB) Application using Silverlight 4, WCF 4, EF 4 and Commanding Architecture Recording, Demos and Slides of the Webinar 'Build an End-to-end Silverlight 4 Application' SilverlightShow Content Updating to Silverlight 4 Free Webcam Photo Application in Silverlight Unit testing MVVM in Silverlight - SDN Event-Code and Slides Visit and bookmark SilverlightShow. Stay in the 'Light

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• SilverlightShow for June 20 - 26, 2011

  - by Dave Campbell

  Check out the Top Five most popular news at SilverlightShow for SilverlightShow Top 5 News for June 20 - 26, 2011. Here are the top 5 news on SilverlightShow for last week: Metro UI for RadControls for Silverlight and WPF Nokia's first Windows Phone: images and video, codenamed 'Sea Ray' List of standard icons for Windows Phone 7 (WP7) Is Adobe’s new HTML5 Edge tool Expression Blends replacement? The Ultimate Windows Phone 7.5 Mango Preview Visit and bookmark SilverlightShow. Stay in the 'Light

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• Naming a class that processes orders

  - by p.campbell

  I'm in the midst of refactoring a project. I've recently read Clean Code, and want to heed some of the advice within, with particular interest in Single Responsibility Principle (SRP). Currently, there's a class called OrderProcessor in the context of a manufacturing product order system. This class is currently performs the following routine every n minutes: check database for newly submitted + unprocessed orders (via a Data Layer class already, phew!) gather all the details of the orders mark them as in-process iterate through each to: perform some integrity checking call a web service on a 3rd party system to place the order check status return value of the web service for success/fail email somebody if web service returns fail constantly log to a text file on each operation or possible fail point I've started by breaking out this class into new classes like: OrderService - poor name. This is the one that wakes up every n minutes OrderGatherer - calls the DL to get the order from the database OrderIterator (? seems too forced or poorly named) - OrderPlacer - calls web service to place the order EmailSender Logger I'm struggling to find good names for each class, and implementing SRP in a reasonable way. How could this class be separated into new class with discrete responsibilities?

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• Gathering IP address and workstation information; does it belong in a state class?

  - by p.campbell

  I'm writing an enterprisey utility that collects exception information and writes to the Windows Event Log, sends an email, etc. This utility class will be used by all applications in the corporation: web, BizTalk, Windows Services, etc. Currently this class: holds state given to it via public properties calls out to .NET Framework methods to gather information about runtime details. Included are call to various properties and methods from System.Environment, Reflection details, etc. This implementation has the benefit of allowing all those callers not to have to make these same calls themselves. This means less code for the caller to forget, screw up, etc. Should this state class (please what's the phrase I'm looking for [like DTO]?) know how to resolve/determine runtime details (like the IP address and machine name that it's running on)? It seems to me on second thought that it's meant to be a class that should hold state, and not know how to call out to the .NET Framework to find information. var myEx = new AppProblem{MachineName="Riker"}; //Will get "Riker 10.0.0.1" from property MachineLongDesc Console.WriteLine("full machine details: " + myEx.MachineLongDesc); public class AppProblem { public string MachineName{get;set;} public string MachineLongDesc{ get{ if(string.IsNullOrEmpty(this.MachineName) { this.MachineName = Environment.MachineName; } return this.MachineName + " " + GetCurrentIP(); } } private string GetCurrentIP() { return System.Net.Dns.GetHostEntry(this.MachineName) .AddressList.First().ToString(); } } This code was written by hand from memory, and presented for simplicity, trying to illustrate the concept.

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• How do I produce "enjoyably" random, as opposed to pseudo-random?

  - by Hilton Campbell

  I'm making a game which presents a number of different kinds of puzzles in sequence. I choose each puzzle with a pseudorandom number. For each puzzle, there are a number of variations. I choose the variation with another pseudorandom number. And so on. The thing is, while this produces near-true randomness, this isn't what the player really wants. The player typically wants what they perceive to be and identify as random, but only if it doesn't tend to repeat puzzles. So, not really random. Just unpredictable. Giving it some thought, I can imagine hacky ways of doing it. For example, temporarily eliminating the most recent N choices from the set of possibilities when selecting a new choice. Or assigning every choice an equal probability, reducing a choice's probability to zero on selection, and then increasing all probabilities slowly with each selection. I assume there's an established way of doing this, but I just don't know the terminology so I can't find it. Anyone know? Or has anyone solved this in a pleasing way?

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• PCs using certain IP addresses cannot ping out

  - by Steve McCall

  I'm having a very strange problem which I just can't get past. The way our network is set up, we have 2 locations. The main office with all our PCs, and servers/ We are then joined to a local ISP via microwave link and they provide our internet gateway and house an additional storage server for us. All of the network infrastructure is within our office The problem is... When some PCs (and servers) are assigned IP addresses, they cannot ping the gateway or remote server however the remote server can ping the PC. Most of our internal IP addresses work fine but specific ones (e.g. .29) has this problem all the time. There is nothing else using the ip address and no other network problems. When we switch the IP on the PC, it works fine. Please help, I'm going mad. Thanks, Steve

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• using sed, how to change the text on line seven to read seventh?

  - by Steve

  using sed, how to change the text on line seven to read seventh? Steve Blenheim:238-923-7366:95 Latham Lane, Easton, PA 83755:11/12/56:20300 Betty Boop:245-836-8357:635 Cutesy Lane, Hollywood, CA 91464:6/23/23:14500 Igor Chevsky:385-375-8395:3567 Populus Place, Caldwell, NJ 23875:6/18/68:23400 Norma Corder:397-857-2735:74 Pine Street, Dearborn, MI 23874:3/28/45:245700 Jennifer Cowan:548-834-2348:583 Laurel Ave., Kingsville, TX 83745:10/1/35:58900 Jon DeLoach:408-253-3122:123 Park St., San Jose, CA 04086:7/25/53:85100 Karen Evich:284-758-2857:23 Edgecliff Place, Lincoln, NB 92743:7/25/53:85100 Fred Fardbarkle:674-843-1385:20 Parak Lane, Duluth, MN 23850:4/12/23:780900 Lori Gortz:327-832-5728:3465 Mirlo Street, Peabody, MA 34756:10/2/65:35200 Paco Gutierrez:835-365-1284:454 Easy Street, Decatur, IL 75732:2/28/53:123500 Ephram Hardy:293-259-5395:235 CarltonLane, Joliet, IL 73858:8/12/20:56700

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• Using sed, how to print all lines that match a certain date?

  - by Steve

  Using sed, how to print all lines where the birthdays are in November or December? Assuming input file name "datebook" as follows: Steve Blenheim:238-923-7366:95 Latham Lane, Easton, PA 83755:11/12/56:20300 Betty Boop:245-836-8357:635 Cutesy Lane, Hollywood, CA 91464:6/23/23:14500 Igor Chevsky:385-375-8395:3567 Populus Place, Caldwell, NJ 23875:6/18/68:23400 Karen Evich:284-758-2857:23 Edgecliff Place, Lincoln, NB 92743:7/25/53:85100 Fred Fardbarkle:674-843-1385:20 Parak Lane, Duluth, MN 23850:4/12/23:780900 Lori Gortz:327-832-5728:3465 Mirlo Street, Peabody, MA 34756:10/2/65:35200 Paco Gutierrez:835-365-1284:454 Easy Street, Decatur, IL 75732:2/28/53:123500 Ephram Hardy:293-259-5395:235 CarltonLane, Joliet, IL 73858:8/12/20:56700 ABE LINCOLN:813-555-0123:1549 Cabin Drive, Springfield, IL 61801:2/12/09:79000 James Ikeda:834-938-8376:23445 Aster Ave., Allentown, NJ 83745:12/1/38:45000

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