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• Is there a way to mark up code to tell ReSharper not to format it?

  - by adrianbanks

  I quite often use the ReSharper "Clean Up Code" command to format my code to our coding style before checking it into source control. This works well in general, but some bits of code are better formatted manually (eg. because of the indenting rules in ReSharper, things like chained linq methods or multi-line ternary operators have a strange indent that pushes them way to the right). Is there any way to mark up parts of a file to tell ReSharper not to format that area? I'm hoping for some kind of markup similar to how ReSharper suppresses other warnings/features. If not, is there some way of changing a combination of settings to get ReSharper to format the indenting correctly? EDIT: I have found this post from the ReSharper forums that says that generated code sections (as defined in the ReSharper options page) are ignored in code cleanup. Having tried it though, it doesn't seem to get ignored.

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• Sourcecode for Paymentroll example in Robert C. Martin book

  - by bitbonk

  Throughout the book "Agile Principles, Patterns, and Practices in C#" by Robert C. Martin a small Paymentroll application is build. While most of the source code is printed in place, some classes are missing and some are incomplete. The book says on the firest page: The book includes many source code examples that are also available for download from the authors' Web site. Unfortunately this seems to be a lie. Unless either this is not the author's website (the book forgets to mention the authors website adress) or I am blind. Does anyone have the comlete source code for that book preferably in form of a Visual Studio project or knows where I can find it.

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• How to properly rewrite ASSERT code to pass /analyze in msvc?

  - by Sorin Sbarnea

  Visual Studio added code analysis (/analyze) for C/C++ in order to help identify bad code. This is quite a nice feature but when you deal with and old project you may be overwhelmed by the number of warnings. Most of the problems are generating because the old code is doing some ASSERT at the beginning of the method or function. I think this is the ASSERT definition used in the code (from afx.h) #define ASSERT(f) DEBUG_ONLY((void) ((f) || !::AfxAssertFailedLine(THIS_FILE, __LINE__) || (AfxDebugBreak(), 0))) Example code: ASSERT(pBytes != NULL); *pBytes = 0; // <- warning C6011: Dereferencing NULL pointer 'pBytes' I'm looking for an easy and safe solution to solve these warnings that does not imply disabling these warnings. Did I mention that there are lots of occurrences in current codebase?

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• Typical size of unit tests compared to test code

  - by Frank Schwieterman

  I'm curious what a reasonable / typical value is for the ratio of test code to production code when people are doing TDD. Looking at one component, I have 530 lines of test code for 130 lines of production code. Another component has 1000 lines of test code for 360 lines of production code. So the unit tests are requiring roughly 3x to 5x as much code. This is for Javascript code. I don't have much tested C# code handy, but I think for another project I was looking at 2x to 3x as much test code then production code. It would seem to me that the lower that value is, assuming the tests are sufficient, would reflect higher quality tests. Pure speculation, I just wonder what ratios other people see. I know lines of code is an loose metric, but since I code in the same style for both test and production (same spacing format, same ammount of comments, etc) the values are comparable.

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• How can I reuse my javascript code between client and server?

  - by Chris Farmer

  I have some javascript code that includes an ANTLR-generated lexer and parser, and some associated syntax tree evaluation functionality. This code runs in the browser in my web app to support users who author code snippets which process scientific data. Now I'd like to do some additional background processing on the server using the same generated parser. I would prefer not to have to re-implement this stuff in C# and have multiple bits of code that did the exact same thing. Performance isn't as critical to me as eliminating duplication, since this is a background process. So, how can I call into my javascript code from C#? And how can I format my script so that it plays nicely with my .NET web app?

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• C# Code Smells. What are the most common and how to fix them?

  - by Carlos Loth

  Hi, One thing I'd like to hear from you guys is what are the code smells that you see most often happen on C# code and how to fix them. I'm working on defining a code-review process for my team and I'd like to include a section with the most common C# code smells and a possible fix for each of them. I'd like the assistance of the community on that, so others can reuse this list for further reference. What are the most common smells you have seen on C# code? How did you fix them?

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• How many SVN checkouts of my project on google code?

  - by Paul Biggar

  My project uses Google Code. Is there a way to find out how many checkouts there have been?

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• phonegap.js crashes android app

  - by peirix

  I'm having this weird problem, where including the phonegap.js file in my project causes the app to crash on both the android emulator and my phone. I got the latest file from GitHub, so I can't see why this isn't working. This happens even if I try to build the sample project that's included in the PhoneGap download... Console log: [2010-12-17 11:05:14 - sample] Android Launch! [2010-12-17 11:05:14 - sample] adb is running normally. [2010-12-17 11:05:14 - sample] Performing com.phonegap.sample.sample activity launch [2010-12-17 11:05:14 - sample] Automatic Target Mode: using existing emulator 'emulator-5554' running compatible AVD 'FirstDevice' [2010-12-17 11:05:16 - sample] Uploading sample.apk onto device 'emulator-5554' [2010-12-17 11:05:16 - sample] Installing sample.apk... [2010-12-17 11:05:21 - sample] Success! [2010-12-17 11:05:22 - sample] Starting activity com.phonegap.sample.sample on device emulator-5554 [2010-12-17 11:05:23 - sample] ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.phonegap.sample/.sample } LogCat: 12-17 11:13:12.533: DEBUG/AndroidRuntime(373): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<< 12-17 11:13:12.533: DEBUG/AndroidRuntime(373): CheckJNI is ON 12-17 11:13:13.453: DEBUG/AndroidRuntime(373): Calling main entry com.android.commands.pm.Pm 12-17 11:13:13.503: DEBUG/AndroidRuntime(373): Shutting down VM 12-17 11:13:13.513: DEBUG/dalvikvm(373): GC_CONCURRENT freed 101K, 71% free 297K/1024K, external 0K/0K, paused 2ms+2ms 12-17 11:13:13.523: INFO/AndroidRuntime(373): NOTE: attach of thread 'Binder Thread #3' failed 12-17 11:13:13.523: DEBUG/dalvikvm(373): Debugger has detached; object registry had 1 entries 12-17 11:13:14.113: DEBUG/AndroidRuntime(383): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<< 12-17 11:13:14.113: DEBUG/AndroidRuntime(383): CheckJNI is ON 12-17 11:13:14.853: DEBUG/AndroidRuntime(383): Calling main entry com.android.commands.am.Am 12-17 11:13:14.894: INFO/ActivityManager(62): Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.phonegap.sample/.sample } from pid 383 12-17 11:13:14.973: INFO/ActivityManager(62): Start proc com.phonegap.sample for activity com.phonegap.sample/.sample: pid=391 uid=10031 gids={1006, 3003, 1015} 12-17 11:13:14.983: DEBUG/AndroidRuntime(383): Shutting down VM 12-17 11:13:15.053: DEBUG/dalvikvm(383): GC_CONCURRENT freed 102K, 69% free 319K/1024K, external 0K/0K, paused 2ms+2ms 12-17 11:13:15.093: INFO/AndroidRuntime(383): NOTE: attach of thread 'Binder Thread #3' failed 12-17 11:13:15.143: DEBUG/dalvikvm(383): Debugger has detached; object registry had 1 entries 12-17 11:13:15.523: DEBUG/dalvikvm(33): GC_EXPLICIT freed 11K, 54% free 2520K/5379K, external 716K/1038K, paused 467ms 12-17 11:13:15.663: DEBUG/dalvikvm(33): GC_EXPLICIT freed <1K, 54% free 2520K/5379K, external 716K/1038K, paused 132ms 12-17 11:13:15.772: DEBUG/dalvikvm(33): GC_EXPLICIT freed <1K, 54% free 2520K/5379K, external 716K/1038K, paused 113ms 12-17 11:13:16.333: INFO/ARMAssembler(62): generated scanline__00000177:03515104_00001002_00000000 [ 87 ipp] (110 ins) at [0x43aff6f0:0x43aff8a8] in 686000 ns 12-17 11:13:17.493: INFO/ActivityManager(62): Displayed com.phonegap.sample/.sample: +2s540ms 12-17 11:13:18.163: DEBUG/szipinf(391): Initializing inflate state 12-17 11:13:18.173: DEBUG/szipinf(391): Initializing zlib to inflate 12-17 11:13:18.573: WARN/dalvikvm(391): JNI WARNING: jarray 0x40567330 points to non-array object (Ljava/lang/String;) 12-17 11:13:18.593: INFO/dalvikvm(391): "WebViewCoreThread" prio=5 tid=9 NATIVE 12-17 11:13:18.603: INFO/dalvikvm(391): | group="main" sCount=0 dsCount=0 obj=0x4051b880 self=0x1af760 12-17 11:13:18.603: INFO/dalvikvm(391): | sysTid=400 nice=0 sched=0/0 cgrp=default handle=1778000 12-17 11:13:18.623: INFO/dalvikvm(391): | schedstat=( 851184092 892639082 140 ) 12-17 11:13:18.633: INFO/dalvikvm(391): at android.webkit.LoadListener.nativeFinished(Native Method) 12-17 11:13:18.633: INFO/dalvikvm(391): at android.webkit.LoadListener.nativeFinished(Native Method) 12-17 11:13:18.653: INFO/dalvikvm(391): at android.webkit.LoadListener.tearDown(LoadListener.java:1200) 12-17 11:13:18.653: INFO/dalvikvm(391): at android.webkit.LoadListener.handleEndData(LoadListener.java:721) 12-17 11:13:18.653: INFO/dalvikvm(391): at android.webkit.LoadListener.handleMessage(LoadListener.java:219) 12-17 11:13:18.672: INFO/dalvikvm(391): at android.os.Handler.dispatchMessage(Handler.java:99) 12-17 11:13:18.672: INFO/dalvikvm(391): at android.os.Looper.loop(Looper.java:123) 12-17 11:13:18.672: INFO/dalvikvm(391): at android.webkit.WebViewCore$WebCoreThread.run(WebViewCore.java:629) 12-17 11:13:18.672: INFO/dalvikvm(391): at java.lang.Thread.run(Thread.java:1019) 12-17 11:13:18.672: ERROR/dalvikvm(391): VM aborting 12-17 11:13:18.887: INFO/DEBUG(31): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 12-17 11:13:18.887: INFO/DEBUG(31): Build fingerprint: 'generic/sdk/generic:2.3/GRH55/79397:eng/test-keys' 12-17 11:13:18.893: INFO/DEBUG(31): pid: 391, tid: 400 >>> com.phonegap.sample <<< 12-17 11:13:18.893: INFO/DEBUG(31): signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr deadd00d 12-17 11:13:18.893: INFO/DEBUG(31): r0 fffffebc r1 deadd00d r2 00000026 r3 00000000 12-17 11:13:18.893: INFO/DEBUG(31): r4 81da45c8 r5 40567330 r6 81d8592c r7 001b2a48 12-17 11:13:18.893: INFO/DEBUG(31): r8 43640b58 r9 42dd1ecc 10 42dd1eb4 fp 4168d82c 12-17 11:13:18.893: INFO/DEBUG(31): ip 81da4728 sp 43640410 lr afd19375 pc 81d45a02 cpsr 20000030 12-17 11:13:19.183: INFO/DEBUG(31): #00 pc 00045a02 /system/lib/libdvm.so 12-17 11:13:19.183: INFO/DEBUG(31): #01 pc 000376fc /system/lib/libdvm.so 12-17 11:13:19.183: INFO/DEBUG(31): #02 pc 000399c4 /system/lib/libdvm.so 12-17 11:13:19.193: INFO/DEBUG(31): #03 pc 0003a4a0 /system/lib/libdvm.so 12-17 11:13:19.203: INFO/DEBUG(31): #04 pc 0032b6d6 /system/lib/libwebcore.so 12-17 11:13:19.203: INFO/DEBUG(31): #05 pc 002a4da4 /system/lib/libwebcore.so 12-17 11:13:19.203: INFO/DEBUG(31): #06 pc 001a6136 /system/lib/libwebcore.so 12-17 11:13:19.213: INFO/DEBUG(31): #07 pc 002a5870 /system/lib/libwebcore.so 12-17 11:13:19.223: INFO/DEBUG(31): #08 pc 00359e36 /system/lib/libwebcore.so 12-17 11:13:19.223: INFO/DEBUG(31): #09 pc 0035d30e /system/lib/libwebcore.so 12-17 11:13:19.223: INFO/DEBUG(31): #10 pc 003638be /system/lib/libwebcore.so 12-17 11:13:19.233: INFO/DEBUG(31): #11 pc 0019f6fa /system/lib/libwebcore.so 12-17 11:13:19.233: INFO/DEBUG(31): #12 pc 0019f780 /system/lib/libwebcore.so 12-17 11:13:19.243: INFO/DEBUG(31): #13 pc 001a3d8a /system/lib/libwebcore.so 12-17 11:13:19.243: INFO/DEBUG(31): #14 pc 000d0dca /system/lib/libwebcore.so 12-17 11:13:19.253: INFO/DEBUG(31): #15 pc 000d0f28 /system/lib/libwebcore.so 12-17 11:13:19.253: INFO/DEBUG(31): #16 pc 000d106e /system/lib/libwebcore.so 12-17 11:13:19.253: INFO/DEBUG(31): #17 pc 000ddef0 /system/lib/libwebcore.so 12-17 11:13:19.263: INFO/DEBUG(31): #18 pc 000ddf62 /system/lib/libwebcore.so 12-17 11:13:19.263: INFO/DEBUG(31): #19 pc 000f3ce2 /system/lib/libwebcore.so 12-17 11:13:19.273: INFO/DEBUG(31): #20 pc 002739ae /system/lib/libwebcore.so 12-17 11:13:19.273: INFO/DEBUG(31): #21 pc 000eac5e /system/lib/libwebcore.so 12-17 11:13:19.273: INFO/DEBUG(31): #22 pc 001b152c /system/lib/libwebcore.so 12-17 11:13:19.283: INFO/DEBUG(31): #23 pc 00017d34 /system/lib/libdvm.so 12-17 11:13:19.283: INFO/DEBUG(31): #24 pc 00048ec0 /system/lib/libdvm.so 12-17 11:13:19.283: INFO/DEBUG(31): #25 pc 00041a6a /system/lib/libdvm.so 12-17 11:13:19.293: INFO/DEBUG(31): #26 pc 0001cf94 /system/lib/libdvm.so 12-17 11:13:19.303: INFO/DEBUG(31): #27 pc 0002209c /system/lib/libdvm.so 12-17 11:13:19.303: INFO/DEBUG(31): #28 pc 00020f90 /system/lib/libdvm.so 12-17 11:13:19.313: INFO/DEBUG(31): #29 pc 0005f328 /system/lib/libdvm.so 12-17 11:13:19.313: INFO/DEBUG(31): #30 pc 0005f54e /system/lib/libdvm.so 12-17 11:13:19.313: INFO/DEBUG(31): #31 pc 00053b06 /system/lib/libdvm.so 12-17 11:13:19.313: INFO/DEBUG(31): code around pc: 12-17 11:13:19.313: INFO/DEBUG(31): 81d459e0 447a4479 ed0cf7d1 20004c09 ee34f7d1 12-17 11:13:19.323: INFO/DEBUG(31): 81d459f0 447c4808 6bdb5823 d0002b00 49064798 12-17 11:13:19.323: INFO/DEBUG(31): 81d45a00 700a2226 eea0f7d1 0004355f 0004511d 12-17 11:13:19.323: INFO/DEBUG(31): 81d45a10 0005ebd2 fffffebc deadd00d b510b40e 12-17 11:13:19.323: INFO/DEBUG(31): 81d45a20 4c0a4b09 447bb083 aa05591b 6b5bca02 12-17 11:13:19.323: INFO/DEBUG(31): code around lr: 12-17 11:13:19.333: INFO/DEBUG(31): afd19354 b0834a0d 589c447b 26009001 686768a5 12-17 11:13:19.333: INFO/DEBUG(31): afd19364 220ce008 2b005eab 1c28d003 47889901 12-17 11:13:19.333: INFO/DEBUG(31): afd19374 35544306 d5f43f01 2c006824 b003d1ee 12-17 11:13:19.333: INFO/DEBUG(31): afd19384 bdf01c30 000281a8 ffffff88 1c0fb5f0 12-17 11:13:19.333: INFO/DEBUG(31): afd19394 43551c3d a904b087 1c16ac01 604d9004 12-17 11:13:19.333: INFO/DEBUG(31): stack: 12-17 11:13:19.333: INFO/DEBUG(31): 436403d0 00000015 12-17 11:13:19.333: INFO/DEBUG(31): 436403d4 afd18407 /system/lib/libc.so 12-17 11:13:19.333: INFO/DEBUG(31): 436403d8 afd4270c /system/lib/libc.so 12-17 11:13:19.343: INFO/DEBUG(31): 436403dc afd426b8 /system/lib/libc.so 12-17 11:13:19.343: INFO/DEBUG(31): 436403e0 00000000 12-17 11:13:19.343: INFO/DEBUG(31): 436403e4 afd19375 /system/lib/libc.so 12-17 11:13:19.353: INFO/DEBUG(31): 436403e8 001af760 [heap] 12-17 11:13:19.353: INFO/DEBUG(31): 436403ec afd183d9 /system/lib/libc.so 12-17 11:13:19.353: INFO/DEBUG(31): 436403f0 001b2a48 [heap] 12-17 11:13:19.353: INFO/DEBUG(31): 436403f4 0005ebd2 [heap] 12-17 11:13:19.353: INFO/DEBUG(31): 436403f8 40567330 /dev/ashmem/dalvik-heap (deleted) 12-17 11:13:19.363: INFO/DEBUG(31): 436403fc 81d8592c /system/lib/libdvm.so 12-17 11:13:19.363: INFO/DEBUG(31): 43640400 001b2a48 [heap] 12-17 11:13:19.363: INFO/DEBUG(31): 43640404 afd18437 /system/lib/libc.so 12-17 11:13:19.363: INFO/DEBUG(31): 43640408 df002777 12-17 11:13:19.363: INFO/DEBUG(31): 4364040c e3a070ad 12-17 11:13:19.363: INFO/DEBUG(31): #00 43640410 00000001 12-17 11:13:19.363: INFO/DEBUG(31): 43640414 81d37701 /system/lib/libdvm.so 12-17 11:13:19.363: INFO/DEBUG(31): #01 43640418 00000001 12-17 11:13:19.363: INFO/DEBUG(31): 4364041c 81d399c9 /system/lib/libdvm.so 12-17 11:13:22.753: INFO/BootReceiver(62): Copying /data/tombstones/tombstone_09 to DropBox (SYSTEM_TOMBSTONE) 12-17 11:13:22.943: DEBUG/dalvikvm(62): GC_CONCURRENT freed 876K, 48% free 4240K/8135K, external 2269K/3469K, paused 9ms+10ms 12-17 11:13:23.133: DEBUG/dalvikvm(62): GC_FOR_MALLOC freed 348K, 47% free 4318K/8135K, external 2269K/3469K, paused 147ms 12-17 11:13:23.243: DEBUG/Zygote(33): Process 391 terminated by signal (11) 12-17 11:13:23.253: ERROR/InputDispatcher(62): channel '406defc8 com.phonegap.sample/com.phonegap.sample.sample (server)' ~ Consumer closed input channel or an error occurred. events=0x8 12-17 11:13:23.253: ERROR/InputDispatcher(62): channel '406defc8 com.phonegap.sample/com.phonegap.sample.sample (server)' ~ Channel is unrecoverably broken and will be disposed! 12-17 11:13:23.323: DEBUG/dalvikvm(62): GC_FOR_MALLOC freed 134K, 47% free 4376K/8135K, external 2269K/3469K, paused 174ms 12-17 11:13:23.323: INFO/ActivityManager(62): Process com.phonegap.sample (pid 391) has died. 12-17 11:13:23.333: INFO/WindowManager(62): WIN DEATH: Window{406defc8 com.phonegap.sample/com.phonegap.sample.sample paused=false} 12-17 11:13:23.542: DEBUG/dalvikvm(124): GC_EXPLICIT freed 61K, 51% free 2836K/5767K, external 1973K/2288K, paused 907ms 12-17 11:13:23.693: WARN/InputManagerService(62): Got RemoteException sending setActive(false) notification to pid 391 uid 10031 Sorry about the gigantic log posts, but I don't know what is of importance here...

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• Multiple CodeSnippet in an XML .snippet file

  - by Frinavale

  I'm attempting to supplement the help features for my code by providing other developers with code snippets. These produce skeletons of code which demonstrate how to use/call my classes or methods. I've created a .snippet file and have placed it in the "%Visual Studio Folder%\Code Snippets\Visual Basic\My Snippets" folder. I've used the Code Snippets Manager and ensured that it included this folder so that I can access the snippets. Everything works well when I have 1 CodeSnippet tag within the root CodeSnippets tag.... When I add more than one CodeSnippet tag to the file (each with their own title, and their own code example) I'm experiencing something strange. The first CodeSnippet I've added contains code for adding something to my system, the second contains code for editing something in my system, and the third deleting something from the system. When I use the code snippet by right clicking and selecting "Insert Code Snippet", only the first code snippet in the file shows up as an option. When I select it, the code in the first CodeSnippet is inserted....but so is the code within the other CodeSnippet tags. Do you have to have a separate XML .snippet file for each code snippet you want to make available? After reading through MSDN about creating Code Snippets I was under the impression that this could all be done within one file. It seems that I'm not understanding something very basic here and would love to find the answer but apparently Code Snippets are under used so finding the answer has proven to be a little trickier than I first thought it would be. Thanks, -Frinny

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• Caliburn and prism samples

  - by Simon

  Are there any sample applications avaliable that make use of both caliburn and prism? I know there are blogs that talk about it but I would like to wade into some code and see how it all fits together. http://caliburn.codeplex.com http://compositewpf.codeplex.com/

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• python multithreading for dummies

  - by albruno

  trying to find a simple example that clearly shows a single task being divided for multi-threading. Quite frankly... many of the examples are overly sophisticated thus.... making the flow tougher to play with... anyone care to share their breakthrough sample or point to an example? As well, what is the best docs? many google lookups are too specific (for me at this stage) Thanks in advance.

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• Where to find an SQL database for medical information?

  - by iamrohitbanga

  Where can I find sample data of medical information? Data on medicines, diseases, etc. and preferably in a format easy to import into an SQL database.

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• How to pick random (small) data samples using Map/Reduce?

  - by Andrei Savu

  I want to write a map/reduce job to select a number of random samples from a large dataset based on a row level condition. I want to minimize the number of intermediate keys. Pseudocode: for each row if row matches condition put the row.id in the bucket if the bucket is not already large enough Have you done something like this? Is there any well known algorithm? A sample containing sequential rows is also good enough. Thanks.

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• Where do I find good example data? [closed]

  - by Silvanus

  Where do people find sample data that they need for development but can't get directly from their employer for whatever reason? I am looking to rewrite my employers' delivery track and trace software as an exercise.

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• What is New in ASP.NET 4.0 Code Access Security

  - by HosamKamel

  ASP.NET Code Access Security (CAS) is a feature that helps protect server applications on hosting multiple Web sites, ASP.NET lets you assign a configurable trust level that corresponds to a predefined set of permissions. ASP.NET has predefined ASP.NET Trust Levels and Policy Files that you can assign to applications, you also can assign custom trust level and policy files. Most web hosting companies run ASP.NET applications in Medium Trust to prevent that one website affect or harm another site etc. As .NET Framework's Code Access Security model has evolved, ASP.NET 4.0 Code Access Security also has introduced several changes and improvements.   A Full post addresses the new changes in ASP.NET 4.0 is published at Asp.Net QA Team Here http://weblogs.asp.net/asptest/archive/2010/04/23/what-is-new-in-asp-net-4-0-code-access-security.aspx

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• Convert OpenGL code to DirectX

  - by Fredrik Boston Westman

  First of all, this is kind of a follow up question on @byte56 excellent anwser on this question concerning picking algorithms. I'm trying to convert one of his code examples to directX 11 however I have run into some problems ( I can pick but the picking is way off), and I wanted to make sure I had done it right before moving on and checking the rest of my code. I am not that familiar with openGl but I can imagine openGl has different coordinations systems, and functions that alters how you must implement to code a bit. The getPickRay function on the answer linked is what I'm trying to convert. This is the part of my code that I think is giving me trouble when converting from openGl to directX Because I'm unsure on how their different coordination systems differs from one another. PRVecX = ((( 2.0f * mouseX) / ClientWidth ) - 1 ) * tan((viewAngle)/2); PRVecY = (1-(( 2.0f * mouseY) / ClientHeight)) * tan((viewAngle)/2); Another thing that I am unsure about is this part: XMVECTOR worldSpaceNear = XMVector3TransformCoord(cameraSpaceNear, invMat); XMVECTOR worldSpaceFar = XMVector3TransformCoord(cameraSpaceFar, invMat); A couple of notes: The mouse coordinates are already converted so that the top left corner of the client window would be (0,0) and the bottom right (800,600) ( or whatever resolution you would have) The viewAngle is the same angle that I used when setting the camera view with XMMatrixPerspectiveFovLH. I removed the variables aspectRatio and zoomFactor because I assumed that they were related to some specific function of his game. To summarize it up to questions : Does the openGL coordination system differ in such a way that this equation in the first of my code examples wouldn't be valid when used in DirectX 11 ( with its respective screen coordination system)? Is the openGL method Matrix4f.transform(a, b, c) equal to the directX method c = XMVector3TransformCoord(b,a)? (where a is a matrix and b,c are vectors). Because I know when it comes to matrices order is important.

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• Enable Automatic Code First Migrations On SQL Database in Azure Web Sites

  - by Steve Michelotti

  Now that Azure supports .NET Framework 4.5, you can use all the latest and greatest available features. A common scenario is to be able to use Entity Framework Code First Migrations with a SQL Database in Azure. Prior to Code First Migrations, Entity Framework provided database initializers. While convenient for demos and prototypes, database initializers weren’t useful for much beyond that because, if you delete and re-create your entire database when the schema changes, you lose all of your operational data. This is the void that Migrations are meant to fill. For example, if you add a column to your model, Migrations will alter the database to add the column rather than blowing away the entire database and re-creating it from scratch. Azure is becoming increasingly easier to use – especially with features like Azure Web Sites. Being able to use Entity Framework Migrations in Azure makes deployment easier than ever. In this blog post, I’ll walk through enabling Automatic Code First Migrations on Azure. I’ll use the Simple Membership provider for my example. First, we’ll create a new Azure Web site called “migrationstest” including creating a new SQL Database along with it:   Next we’ll go to the web site and download the publish profile:   In the meantime, we’ve created a new MVC 4 website in Visual Studio 2012 using the “Internet Application” template. This template is automatically configured to use the Simple Membership provider. We’ll do our initial Publish to Azure by right-clicking our project and selecting “Publish…”. From the “Publish Web” dialog, we’ll import the publish profile that we downloaded in the previous step:   Once the site is published, we’ll just click the “Register” link from the default site. Since the AccountController is decorated with the [InitializeSimpleMembership] attribute, the initializer will be called and the initial database is created.   We can verify this by connecting to our SQL Database on Azure with SQL Management Studio (after making sure that our local IP address is added to the list of Allowed IP Addresses in Azure): One interesting note is that these tables got created with the default Entity Framework initializer – which is to create the database if it doesn’t already exist. However, our database did already exist! This is because there is a new feature of Entity Framework 5 where Code First will add tables to an existing database as long as the target database doesn’t contain any of the tables from the model. At this point, it’s time to enable Migrations. We’ll open the Package Manger Console and execute the command: PM> Enable-Migrations -EnableAutomaticMigrations This will enable automatic migrations for our project. Because we used the "-EnableAutomaticMigrations” switch, it will create our Configuration class with a constructor that sets the AutomaticMigrationsEnabled property set to true: 1: public Configuration() 2: { 3: AutomaticMigrationsEnabled = true; 4: } We’ll now add our initial migration: PM> Add-Migration Initial This will create a migration class call “Initial” that contains the entire model. But we need to remove all of this code because our database already exists so we are just left with empty Up() and Down() methods. 1: public partial class Initial : DbMigration 2: { 3: public override void Up() 4: { 5: } 6: 7: public override void Down() 8: { 9: } 10: } If we don’t remove this code, we’ll get an exception the first time we attempt to run migrations that tells us: “There is already an object named 'UserProfile' in the database”. This blog post by Julie Lerman fully describes this scenario (i.e., enabling migrations on an existing database). Our next step is to add the Entity Framework initializer that will automatically use Migrations to update the database to the latest version. We will add these 2 lines of code to the Application_Start of the Global.asax: 1: Database.SetInitializer(new MigrateDatabaseToLatestVersion<UsersContext, Configuration>()); 2: new UsersContext().Database.Initialize(false); Note the Initialize() call will force the initializer to run if it has not been run before. At this point, we can publish again to make sure everything is still working as we are expecting. This time we’re going to specify in our publish profile that Code First Migrations should be executed:   Once we have re-published we can once again navigate to the Register page. At this point the database has not been changed but Migrations is now enabled on our SQL Database in Azure. We can now customize our model. Let’s add 2 new properties to the UserProfile class – Email and DateOfBirth: 1: [Table("UserProfile")] 2: public class UserProfile 3: { 4: [Key] 5: [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)] 6: public int UserId { get; set; } 7: public string UserName { get; set; } 8: public string Email { get; set; } 9: public DateTime DateOfBirth { get; set; } 10: } At this point all we need to do is simply re-publish. We’ll once again navigate to the Registration page and, because we had Automatic Migrations enabled, the database has been altered (*not* recreated) to add our 2 new columns. We can verify this by once again looking at SQL Management Studio:   Automatic Migrations provide a quick and easy way to keep your database in sync with your model without the worry of having to re-create your entire database and lose data. With Azure Web Sites you can set up automatic deployment with Git or TFS and automate the entire process to make it dead simple.

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• Slides and Code from my Silverlight MVVM Talk at DevConnections

  - by dwahlin

  I had a great time at the DevConnections conference in Las Vegas this year where Visual Studio 2010 and Silverlight 4 were launched. While at the conference I had the opportunity to give a full-day Silverlight workshop as well as 4 different talks and met a lot of people developing applications in Silverlight. I also had a chance to appear on a live broadcast of Channel 9 with John Papa, Ward Bell and Shawn Wildermuth, record a video with Rick Strahl covering jQuery versus Silverlight and record a few podcasts on Silverlight and ASP.NET MVC 2.  It was a really busy 4 days but I had a lot of fun chatting with people and hearing about different business problems they were solving with ASP.NET and/or Silverlight. Thanks to everyone who attended my sessions and took the time to ask questions and stop by to talk one-on-one. One of the talks I gave covered the Model-View-ViewModel pattern and how it can be used to build architecturally sound applications. Topics covered in the talk included: Understanding the MVVM pattern Benefits of the MVVM pattern Creating a ViewModel class Implementing INotifyPropertyChanged in a ViewModelBase class Binding a ViewModel declaratively in XAML Binding a ViewModel with code ICommand and ButtonBase commanding support in Silverlight 4 Using InvokeCommandBehavior to handle additional commanding needs Working with ViewModels and Sample Data in Blend Messaging support with EventBus classes, EventAggregator and Messenger My personal take on code in a code-beside file (I’m all in favor of it when used appropriately for message boxes, child windows, animations, etc.) One of the samples I showed in the talk was intended to teach all of the concepts mentioned above while keeping things as simple as possible.  The sample demonstrates quite a few things you can do with Silverlight and the MVVM pattern so check it out and feel free to leave feedback about things you like, things you’d do differently or anything else. MVVM is simply a pattern, not a way of life so there are many different ways to implement it. If you’re new to the subject of MVVM check out the following resources. I wish this talk would’ve been recorded (especially since my live and canned demos all worked :-)) but these resources will help get you going quickly. Getting Started with the MVVM Pattern in Silverlight Applications Model-View-ViewModel (MVVM) Explained Laurent Bugnion’s Excellent Talk at MIX10     Download sample code and slides from my DevConnections talk     For more information about onsite, online and video training, mentoring and consulting solutions for .NET, SharePoint or Silverlight please visit http://www.thewahlingroup.com.

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• Should I implement BackBone.js into my ASP.NET WebForms applications?

  - by Walter Stabosz

  Background I'm trying to improve my group's current web app development pattern. Our current pattern is something we came up with while trying to rich web apps on top of ASP.NET WebForms (none of us knew ASP.NET MVC). This is the current pattern: ! Our application is using the WinForms Framework. Our ASPX pages are essentially just HTML, we use almost no WebControls. We use JavaScript/jQuery to perform all of our UI events and AJAX calls. For a single ASPX page, we have a single .js file. All of our AJAX calls are POSTs (not RESTful at all) Our AJAX calls contact WebMethods which we have defined in a series of ASMX files. One ASMX file per business object. Why Change? I want to revise our pattern a bit for a couple of reasons: We're starting to find that our JavaScript files are getting a bit unwieldy. We're using a hodgepodge of methods for keeping our local data and DOM updates in sync. We seem to spend too much time writing code to keep things in sync, and it can get tricky to debug. I've been reading Developing Backbone.js Applications and I like a lot of what Backbone has to offer in terms of code organization and separation of concerns. However, I've gotten to the chapter on RESTful app, I started to feel some hesitation about using Backbone. The Problem The problem is our WebMethods do not really fit into the RESTful pattern, which seems to be the way Backbone wants to consume them. For now, I'd only like to address our issue of disorganized client side code. I'd like to avoid major rewrites to our WebMethods. My Questions Is it possible to use Backbone (or a similar library) to clean up our client code, while not majorly impacting our data access WebMethods? Or would trying to use Backbone in this manner be a bastardization of it's intended use? Anyone have any suggestions for improving our pattern in the area of code organization and spending less time writing DOM and data sync code?

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• Chicago Code Camp Call For Speakers

  - by Tim Murphy

  The Chicago Code Camp is coming up on May 1st, 2010.  They are still looking for speaker.  If you have a rock’n code demonstration that you would like to present to the community be sure to sign up.  If you know someone else who has some ideas that you really think they should share with the world guilt them in to signing up.  http://www.chicagocodecamp.com/ del.icio.us Tags: Chicago Code Camp,call for speakers

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• Dream.In.Code Podcast 15 with Michael Crump

  - by mbcrump

  I was recently interviewed by Dennis Delimarsky for his podcast titled “Dream.In.Code”. We talked for about an hour on all things Silverlight and Windows Phone 7. Dennis asked a lot of great questions and I thoroughly enjoyed chatting with him. Check out the interview and let me know what you think. Listen to the podcast. Dream.In.Code Website Thanks again to Dream In Code for this opportunity.  Subscribe to my feed

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• Writing C# Code Using SOLID Principles

  - by bipinjoshi

  Most of the modern programming languages including C# support objected oriented programming. Features such as encapsulation, inheritance, overloading and polymorphism are code level features. Using these features is just one part of the story. Equally important is to apply some object oriented design principles while writing your C# code. SOLID principles is a set of five such principles--namely Single Responsibility Principle, Open/Closed Principle, Liskov Substitution Principle, Interface Segregation Principle and Dependency Inversion Principle. Applying these time proven principles make your code structured, neat and easy to maintain. This article discusses SOLID principles and also illustrates how they can be applied to your C# code.http://www.binaryintellect.net/articles/7f857089-68f5-4d76-a3b7-57b898b6f4a8.aspx 

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• Using old code on new version of Visual Studio [migrated]

  - by Tu Tran

  I have a project which was started from 90s in C/C++. Therefore, it contains many old coding styles such as K&R-style function declaration, obsolete function, ... The project works fine in Visual Studio 2008, but now I want to use it in the new version of Visual Studio (specifically VS 2010) because we have other projects in Visual Studio 2010/2012. I don't want to have too many versions of Visual Studio on my machine. When I try to compile the old project, Visual Studio throws too many errors. I can fix all of them but I am scared to edit the source code and I want other people to be able to pen it in the old version of VS too. I want the project to remain backwards compatible with VS. My question is how to use the old code in Visual Studio 2010/2012 without changing the code. Or if necessary how do I just fix a few lines of code, but make sure it won't cause an error if someone else opens that code in the older version of VS. Is there a way to tell newer Visual Studio versions to use older compiler flags or something like that?

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• Task-It Webinar - Source Code

  Last week I presented a webinar called "Building a real-world application with RadControls for Silverlight 4". For those that didn't get to see the webinar, you can view it here: Building a read-world application with RadControls for Silverlight 4 Since the webinar I've received several requests asking if I could post the source code for the simple application I showed demonstrating some of the techniques used in the development of Task-It, such as MVVM, Commands and Internationalization. This source code is now available for downloadhere. After downloading the source: Extract it to the location of your choice on your hard-drive Open the solution Right-click ModuleProject.Web and selecte 'Set as StartUp Project'. Right-click ProjectTestPage.aspx and selected 'Set as Start Page' Create a database in SQL Server called WebinarProject. Navigate to the Database folder under the WebinarProject directory and run the .sql script against your WebinarProject database. The last two steps are necessary only for the Tasks page to work properly (using WCF RIA Services). Now some notes about each page: Code-behind This is not the way I recommend coding a line-of-business application in Silverlight, but simply wanted to show how the code-behind approach would look. Command This page introduces MVVM and Commands. You'll notice in the XAML that the Command property of theRadMenuItem and the Button are both bound to a SaveCommand. That comes from the view model. If you look in the code- behind of the user control you'll see that an instance of a CommandViewModel is instantiated and set as the DataContext of the UserControl.There is also a listener for the view model's SaveCompleted event. When this is fired, it tells the view (UserControl) to display the MessageBox. Internationalization This sample is similar to the previous one, but instead of using hard-coded strings in the UI, the strings are obtained via binding toview model properties. The view model gets the strings from the .resx files (Strings.resx or Strings.de.resx) under Assets/Resources. If you uncomment the call to ShowGerman() in App.xaml.cs's Application_Startup method and re-run the application, you will see the UI in German. Note that this code, which sets the CurrentCulture and CurrentUICulture on the current thread to "de" (German) is for testing purposes only. RadWindow Once again, very similar to the previous example.The difference is that we are now using a RadWindow to display the 'Saved' message instead of a MessageBox. The advantage here is that we do not have to hold on to a reference to the view model in our code behind so that we can get the 'Saved' message from it. The RadWindow's DataContext is now also bound to the view model, so within its XAML we can bind directly to properties in the view model. Much nicer, and cleaner. One other thing I introduced in this example is the use of spacer Rectangles. Rather than setting a width and/or height on the rectangles for spacing, I am now referencing a style in my ResourceDictionary called StandardSpacerStyle. I like doing this better than using margins or padding because now I have a reusable way to create space between elements, the Rectangle does not show (because I have not set its Fill color), and I can change my spacing throughout the user interface in one place if I'd like. Tasks This page is quite a bit different than the other four. It is a very simple, stripped-down version of the Tasks page in the Task-It application. The Tasks.xaml UserControl has a ContentControl, and the Content of that control is set based on whether we are looking at the list of tasks or editing a task. So it displays one of two child UserControls, which are called List and Details. List has the RadGridView, Details has the form. In the code-behind of the Tasks UserControl I am once again setting its DataContext to a view model class. The nice thing is, whichever child UserControl is being displayed (List or Details) inherits its DataContext from its parent control (Tasks), so I do not have to explicitly set it. The List UserControl simply displays a RadGridView whose ItemsSource is bound to a property in the view model called Tasks, and its SelectedItem property is bound to a property in the view model called SelectedItem. The SelectedItem binding must be TwoWay so that the view is notified when the SelectedItem changes in the view model, and the view model is notified when something changes in the view (like when a user changes the Name and/or DueDate in the form). You'll also notice that the form's TextBox and RadDatePicker are also TwoWay bound to the SelectedItem property in the view model. You can experiment with the binding by removing TwoWay and see how changes in the form do not show up in the RadGridView. So here we have an example of two different views (List and Details) that are both bound to the same view model...and actually, so is the Tasks UserControl, so it is really three views. WCF RIA Services By the way, I am using WCF RIA Services to retrieve data for the RadGridView and save the data when the user clicks the Save button in the form. I created a really simple ADO.NET Entity Data Model in WebinarProject.Web called DataModel.edmx. I also created a simple Domain Data Service called DataService that has methods for retrieving data, inserting, updating and deleting. However I am only using the retrieval and update methods in this sample. Note that I do not currently have any validation in place on the form, as I wanted to keep the sample as simple as possible. Wrap up Technically, I should move the calls to WCF RIA Services out of the view model and put them into a separate layer, but this works for now, and that is a topic for another day! Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Day of Windows Phone 7 at Orlando Code Camp 2010

  - by Nikita Polyakov

  Orlando is coming up fast behind Tampa and South Florida Code Camps. This year, even more so. Check out the schedule and register: http://www.orlandocodecamp.com/  What: All day geek fest focusing on code and not marketing fluff. When: Saturday, March, 27, 2010 All day (registration opens at 7:00am) Where: Seminole State College - Sanford\Lake Mary Campus - 100 Weldon Boulevard Sanford, FL 32773 Cost: Free! A good fellow community leader Will Strohl has a great blog post on What to Expect from Orlando Code Camp 2010 Also, believe it or now there will be a first ever MSDN Webcast: Simulcast Event: Orlando Code Camp where you can watch a select few sessions from home, if you become ill or have another reasonable excuse or just un-realistically far away. Needless to say this is not even close to being there and watching the rest of the sessions, as you don’t get to choose what is shown. But, let’s get back to the topic - there is a full day of Windows Phone 7 Developer topics. I am speaking at 2 sessions: 8:30 AM Prototyping with SketchFlow SketchFlow is a new feature in Expression Blend 3 that enables rapid prototyping of web sites and applications. SketchFlow helps designers, developers, information architects and account managers sketch, wireframe and prototype user experiences and user interfaces. [yes, I will show a some WP7 related SketchFlow towards the end] 9:45 AM Intro to Windows Phone 7 This session will be discussing and showing the new WP7 OS and how new methods of navigation work. This is relevant to understand before you start building your first app. One of the sessions later in the day will be a Install Fest and one will be a code-along, so bring your laptop, if you want. You will find Kevin Wolf, Bill Reiss and I to ask questions at the panel at the end of the day. I will be hanging out all day at the Mobile track and as always during lunch and after dinner. Final topic descriptions and order of presentations is being finalized.

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