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Best C# article of February 2011

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Each month at CodeProject we gather together the best of the articles submitted the previous month and ask our readers to choose the best of the best. Entry is automatic - just submit you articke and we'll do the rest.

Check out the submission guidelines for information on posting articles.

Current Entries

Articles that match the contest criteria are automatically entered. The top 50 entries are shown.

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9 Feb 2011Robert Rohde
This one should outperform both the other methods for longer strings because of the StringBuilder.string s = "AbCdEfGhI§$%&/()1234567890";var sb = new StringBuilder(s.Length);foreach (char c in s) sb.Append(char.IsUpper(c) ? char.ToLower(c) : char.ToUpper(c));s =...
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6 Feb 2011Brij
Why textbox persists data during postback even if View State set to off
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12 Feb 2011Sandeepkumar Ramani
Parallelism in .NET – PLINQ
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8 Feb 2011OriginalGriff
When I add a log reader, the size of the log can be huge, and get very slow to view. This makes the GridView do all the work of paging the data for you.
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19 Feb 2011#realJSOP 2 alternatives  
Determine the number of unique colors in an image
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3 Feb 2011Inaki Ayucar
How to get exactly what you need using DirectoryInfo.GetFiles, with an exact extension match lookup
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9 Feb 2011#realJSOP
StringBuilder mystring = new StringBuilder("AbCd");for (int i = 0; i
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16 Mar 2011Abhishek Sur
Get Reflected use TypeDescriptor
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14 Feb 2011Shailendra P Singh
This article explains the auto-deployment of build using Microsoft Web deploy on build quality change event of TFS 2010
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23 Feb 2011jasonalls
The solution in this tip will enable you to delete SSL certificates programmatically when you receive the error InvalidOperationException: Found multiple X.509 certificates.
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6 Feb 2011mbcrump
Quick run through of the WP7 Developer Tools January 2011
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10 Feb 2011Raymund Macaalay
Creating a Windows Service is easy, but it might be a bit tricky especially for those who are new to developing such a project.
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11 Feb 2011DrABELL
Interesting finding in regards to the Case Toggle Algorithm by Robert (see the following code snippet): protected string ToggleCaseByRobert(string s){ var sb = new StringBuilder(s.Length); foreach (char c in s) sb.Append(char.IsUpper(c) ? char.ToLower(c) :...
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15 Feb 2011DrABELL
The computational efficiency of the Euclid's algorithm is much higher that the alternatives
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14 Feb 2011hjgode
Talking with G-sensors and vector algebra. Shake and Orientation detection.
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17 Feb 2011dontumindit
While dealing with databases, sometimes there is a need to get a list of tables in the application
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14 Feb 2011DrABELL
This is an alternative for "How to Toggle String Case in .NET"
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22 Feb 2011DrABELL
Following two Toggle Case Algorithms, implemented as "pure" .NET solution (no "unsafe" coding technique, all managed code) demonstrate the best performance, tested against a variety of text strings, containing: ASCII, Unicode, all Low case, all Upper case, long numeric strings
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1 Feb 2011AlexCode
EF4 DbDataRecord ConvertTo
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6 Feb 2011stastka
How to finde maximum Contrast of a Webcolor
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9 Feb 2011Wolfgang_Baron
If you really have to put everything into a single function and want to keep the code analyzable and maybe want to be able put some common code at the end, you can always use a success variable. The code does not slow down, as the compiler optimizes the sequenced if-conditions away and produces...
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12 Feb 2011SirTimothy
I use stuff like this quite often. Here's an extension, for switching quickly between two different code blocks://*doSomethingOneWay();/*/doSomethingAnotherWay();//*/As is, that will execute doSomethingOneWay(). To run doSomethingAnotherWay(), just take off the first...
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14 Feb 2011dontumindit 2 alternatives  
If size of numeric array is unknown, strings can be helpful
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12 Feb 2011Yaron Naveh
A command line utility to generate WCF proxies from WSDL 2.0 documents.
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14 Feb 2011George Swan
You can use Linq to do the same thing double[] mydouble = str.Split('#').Select(x => double.Parse(x)).ToArray();
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17 Feb 2011Michael B. Hansen
Couldn't resist: The following is a rewrite of Alternative 9, ToggleCaseHA()This is an unmanaged version which does direct manipulation of the input stringunsafe static string ToggleCaseUnmanaged(string str){ fixed(char* p = str) { for(int i=str.Length-1;i!=-1;--i)...
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19 Feb 2011DaveAuld
Condensed single line version using one of the overloaded methods of Uri;String fullurl = new Uri(new Uri("http://website.com"), "/path/download.php").ToString();
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22 Feb 2011Leom Burke
I have decided to split out the styling work into 2 posts as it would be a huge post to restyle even something so simple.
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14 Feb 2011DrABELL
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1 Feb 2011abridges
Alternate 8, why not just do this:bool bFailed = true;// In case of an exception.try{ // while bFailed while (bFailed) { // do something here. if (condition1) { // exit the loop (goto) bFalse = false; ...
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6 Feb 2011User 7427435
Synchronization
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7 Feb 2011Adnan Boz
Overview: Using Claims-based Access on Windows Azure
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7 Feb 2011Pavel Yermalovich
An example of Prototype pattern
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7 Feb 2011sergiogarcianinja
As this piece of code is normally a function, should be more readable if all of it is put inside a function returning a bool, indicating success or failure.The cleanup function could be only resource deallocation, not a function at all. If it is intended to use with C++ or C#, a try..finally...
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8 Feb 2011Leom Burke
EF Code First and WPF with the Chinook database. Part 2 – The Client
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12 Feb 2011Erez Zinman
Something I only found out about recently:There's a better alternative than using "cmd start...".One should use the following method:[System.Runtime.InteropServices.DllImport("shell32. dll")]private static extern long ShellExecute(Int32 hWnd, string lpOperation,string lpFile, string...
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12 Feb 2011ozkary
Change Silverlight Business Application template to handle login state events
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12 Feb 2011ozkary
How to create a page template on an Office Live website
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12 Feb 2011ozkary
How to load JQuery to a page of an Office Live website
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12 Feb 2011ozkary
How to customize the Office Live page header with an image
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14 Feb 2011FZelle
You are both wrong with the DataAdapter.Why do you think there is an overload with the querystring and the connectionstring?public DataSet select_query(string query, string con_str){ try { using (SqlDataAdapter da = new SqlDataAdapter(query,con_str)) { ...
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14 Feb 2011woric
The sample code provided by Andrew Rissing is a huge improvement over the original, but incorrectly catches the exception and displays a MessageBox. (Andrew correctly points out this is not a good idea.)A better solution is to allow the exception to fail:public DataSet...
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14 Feb 2011Henry Minute
Sorting Lists Using an Anonymous Delegate
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14 Feb 2011jim lahey
I prefer something a little more generic:public static IEnumerable Convert(string value, char separator) where TTypeConverter : TypeConverter { var typeConverter = (TTypeConverter)TypeDescriptor.GetConverter(typeof(TValue)); ...
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14 Feb 2011TimB99
What about this?string s = new string(( from c in "ABCdef" select char.IsUpper(c) ? char.ToLower(c) : char.ToUpper(c) ).ToArray());Note by Alexander Bell: In regards to the performance, this one (i.e. Alternate 9) is the worst in comparison...
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17 Feb 2011cechode
Using the .NET profiler, I compared ToggleCaseByRobertToggleCaseByJohnand my new one given below: static string ToggleCaseByCeChode(string s) { char[] chars = s.ToCharArray(); for (int i = 0; i
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15 Feb 2011Amund Gjersøe
Visual Studio Query Builder does not work with PostgreSQL when you want to use filtering parameters. This tip show how to make your own "FillBy" methods.
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15 Feb 2011UbaiSandouk
How about this:private bool IsPalindrome(string stringToCheck){ return stringToCheck.ToLower() == (new string(stringToCheck.Reverse().ToArray())).ToLower();}
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8 Mar 2011Henry.Ayoola
Several of the answers here lack fallbacks for Unicode.static string ToggleCaseHA(string str) { char[] chs = str.ToCharArray(); for (int i = chs.Length - 1; i >= 0; i--) { char ch = chs[i]; char foo = (char)(ch & ~0x20); if ((foo >= 0x41 && foo
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16 Mar 2011Gary H Guo
Extend component functionality and address cross-cutting concerns using Dynamic Decorator in application development.

Current Participants

Those with articles that match the contest criteria are automatically entered.

Software Developer (Senior) Paddedwall Software
United States United States
I've been paid as a programmer since 1982 with experience in Pascal, and C++ (both self-taught), and began writing Windows programs in 1991 using Visual C++ and MFC. In the 2nd half of 2007, I started writing C# Windows Forms and ASP.Net applications, and have since done WPF, Silverlight, WCF, web services, and Windows services.

My weakest point is that my moments of clarity are too brief to hold a meaningful conversation that requires more than 30 seconds to complete. Thankfully, grunts of agreement are all that is required to conduct most discussions without committing to any particular belief system.
President
India India
Did you like his post?

Oh, lets go a bit further to know him better.
Visit his Website : www.abhisheksur.com to know more about Abhishek.

Abhishek also authored a book on .NET 4.5 Features and recommends you to read it, you will learn a lot from it.
http://bit.ly/EXPERTCookBook

Basically he is from India, who loves to explore the .NET world. He loves to code and in his leisure you always find him talking about technical stuffs.

Working as a VP product of APPSeCONNECT, an integration platform of future, he does all sort of innovation around the product.

Have any problem? Write to him in his Forum.

You can also mail him directly to abhi2434@yahoo.com

Want a Coder like him for your project?
Drop him a mail to contact@abhisheksur.com

Visit His Blog

Dotnet Tricks and Tips



Dont forget to vote or share your comments about his Writing
Web Developer
United States United States
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.
United States United States
I am an MCAD, MCSD, MCTS, MCPD, MCT and Certified CUDA Programmer.
You can find more technical articles on my blog at http://www.adnanboz.com.
Architect
Switzerland Switzerland
Senior IT Consultant working in Switzerland as Senior Software Engineer.

Find more at on my blog.
Engineer
Norway Norway
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.
Software Developer (Senior)
India India
Brij is a 3-times Microsoft MVP in ASP.NET/IIS Category and a passionate .NET developer. More than 6 years of experience in IT field, currently serving a MNC as a Tech Lead/Architect.

He is a very passionate .NET developer and have expertise over Web technologies like ASP.NET 2.0/3.5/4.0, jQuery, JSON, Javascript, IIS and related technologies. He is also a Exchange Server (EWS) Specialist. He has great experience in design patterns and N-Tier Architecture.

He is also certified as Microsoft Certified Technologies Specialist-ASP.NET and Microsoft Certified Technologies Specialist-WCF in .NET 4.0. He has also received several awards at various forums and his various articles got listed as "Article of the day" at ASP.NET Microsoft Official Website www.asp.net.

He has done MCA from NIT Durgapur and completed his graduation from Lucknow University.

Learning new technologies and sharing knowledge excites him most. Blogging, solving problems at various forums, helping people, keeps him busy entire day.


Visit his Blog: Code Wala

Area of Expertise :
C#, ASP.NET 2.0,3.5,4.0, AJAX, JQuery, JSON, XML, XSLT, ADO.Net, WCF, Active Directory, Exchange Server 2007 (EWS), Java script, Web Services ,Win services, DotnetNuke, WSS 3.0,Sharepoint Designer, SQL Server 2000/2005/2008
United States United States
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.
Engineer
Scotland Scotland
I have been working in the Oil & Gas Industry for over 30 years now.

Core Discipline is Instrumentation and Control Systems.

Completed Bsc Honours Degree (B29 in Computing) with the Open University in 2012.

Currently, Offshore Installation Manager in the Al Shaheen oil field, which is located off the coast of Qatar. Prior to this, 25 years of North Sea Oil & Gas experience.
Pakistan Pakistan
I am a learner.
Engineer
United States United States
Dr. Alexander Bell (aka DrABell) is a seasoned full-stack Software (Win/Web/Mobile) and Data Engineer. He holds PhD in Electrical and Computer Engineering, authored 37 inventions and published 100+ technical articles; currently focused on Microsoft Azure Cloud and Android Mobile development projects. Alex participated in App Innovation Contests (AIC 2102/2013) w/multiple winning submissions. Sample apps/publications:

  1. HTML5/CSS3 graphic enhancement: buttons, inputs
  2. HTML5 Tables Formatting: Alternate Rows, Color Gradients, Shadows
  3. Azure web app: Engineering Calculator VOLTMATTER
  4. Azure: NYC real-time bus tracking app
  5. Quiz Engine powered by Azure cloud
  6. 'enRoute': Real-time NY City Bus Tracking Web App
  7. Advanced CSS3 Styling of HTML5 SELECT Element
  8. Aggregate Product function extends SQL
  9. YouTube™ API for ASP.NET
United States United States
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.
Web Developer
Germany Germany
Software-Developer since 1990
Specialiced in LAN/WAN Tracers ( sniffer )
now developing in .NET ( c#, VB, ASP ..)
United States United States
Object-oriented (OO) is about "classes" not "objects". But I truly believe that "objects" deserve more our attentions. If you agree, read more on... Dynamic Object Programming (DOP), Component-Based Object Extender (CBO Extender), AOP Container and Dynamic Decorator Pattern.

Mobile development is not just another type of front end. The real challenge is actually in the back end: How to present meaningful information in time to mobile users with exponentially increased data flooding around? Here is my first mobile solution: SmartBars - Barcode Reader, Price Comparison and Coupons.

Gary lives in southeast Michigan. My first programming language is FORTRAN. For the last a few years, I have primarily focused on .NET technologies with Mobile Development as my newest interest.
Student
Wales Wales
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.
Retired
United Kingdom United Kingdom
Retired Systems Admin, Programmer, Dogsbody.
Mainly on Systems for Local Government, Health Authorities,
Insurance Industry - (COBOL eeeeeeeugh).
Inventor of Synchronized Shopping.
United States United States
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.
Germany Germany
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.
Software Developer (Senior)
Spain Spain
Inaki Ayucar is a Microsoft MVP in DirectX/XNA, and a software engineer involved in development since his first Spectrum 48k, in the year 1987. He is the founder and chief developer of The Simax Project (www.simaxvirt.com) and is very interested in DirectX/XNA, physics, game development, simulation, C++ and C#.

His blog is: http://graphicdna.blogspot.com

To contact Inaki: iayucar@simax.es
Software Developer Lucid Research Limited
United Kingdom United Kingdom
I have been programming software since 1999. My qualifications include CIW Associate, SCJP for the Java 1.4 Platform, MCAD using Visual C#, and PRINCE2 Practitioner.
Software Developer (Senior)
United Kingdom United Kingdom
First batch file in 1987

Messed around with the Bullfrog C++ Libraries for Syndicate in 1994

Web Developer since 2000

.net Developer since 2001

MCTS: Microsoft® .NET Framework 2.0 - Web-based Client Development

MCTS: Web Applications Development with Microsoft .NET Framework 4
Software Developer (Senior)
United Kingdom United Kingdom
I am a developer currently working for a financial company in the UK with a focus on back end work using NServiceBus. Personally I also enjoy working with ASP.NET (MVC), WPF, ruby and investigating best practice using methods like TDD and bettering the quality of code.
Software Developer (Senior) Telerik
United States United States
Michael Crump is a Silverlight MVP and MCPD that has been involved with computers in one way or another for as long as he can remember, but started professionally in 2002. After spending years working as a systems administrator/tech support analyst, Michael branched out and started developing internal utilities that automated repetitive tasks and freed up full-time employees. From there, he was offered a job working at McKesson corporation and has been working with some form of .NET and VB/C# since 2003.

He has worked at Fortune 500 companies where he gained experience in embedded systems design and software development to systems administration and database programming, and everything in between.

His primary focus right now is developing healthcare software solutions using Microsoft .NET technologies. He prefers building infrastructure components, reusable shared libraries and helping companies define, develop and automate process standards and guidelines.

You can read his blog at: MichaelCrump.net or follow him on Twitter at @mbcrump.
Founder CWAIN
Denmark Denmark
I have a MCPD .NET 3.5 EAD and a Bsc in computer science, organizational theory and economics.
After more than 15 years working as professional system engineer, I founded the independent consultant agency CWAIN.
CEO
Wales Wales
Born at an early age, he grew older. At the same time, his hair grew longer, and was tied up behind his head.
Has problems spelling the word "the".
Invented the portable cat-flap.
Currently, has not died yet. Or has he?
Architect OG-BITechnologies
United States United States
Software engineer, author & speaker who enjoys mentoring, learning, speaking and sharing with others about software development technologies. Microsoft MVP.

My Blog
Software Developer (Senior)
Belarus Belarus
Software developer with over 3 years of extensive experience in analysis, design and development. Recently, most interested in refactoring and design patterns applied to .NET Framework.

Core technologies I am using: OOP, OOD, DDD, TDD, N-tier applications, enterprise development.

Certificates:
Brainbench: .NET Framework 3.5 Fundamentals, Data Modeling Concepts, Web Design Concepts, C#

Microsoft: Exam 70-526: TS: Microsoft .NET Framework 2.0 - Windows-Based Client Development

INTUIT.RU: Development of Web-application ASP. NET Using Visual Studio. NET, Web applications in ASP.NET, Microsoft .NET Framework Distributed Applications Development.

Specialties
NET Framework : 2.0, 3.5, 4.0
Languages and technologies: C#, ASP.NET MVC 2, ASP.NET MVC 3, WCF, ASP.NET 4.0, Web Services, ADO.NET, LINQ, Entity Framework, NHibernate 3.0, JavaScript, HTML, CSS, XML, Ajax
RDBMS : SQL Server 2005, 2008, 2008 R2, MS Access.
Reporting: MS SQL Reporting Services, Crystal Reports
Technical Lead
New Zealand New Zealand
http://nz.linkedin.com/in/macaalay
http://macaalay.com/
Web Developer
Germany Germany
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.
Technical Lead
India India
I write software using Microsoft web technologies since 2008. I have successfully delivered software products for Fortune 500 companies and startups.

Microsoft Certified Technologies Specialist - Web Applications Development with Microsoft .NET Framework 4.

Awarded as Microsoft Community Contributor of the year 2011.

Received several awards at various forums and my various articles got listed as "Article of the day" at ASP.NET Microsoft Official Website https://www.asp.net/

Visit My Blog:
https://ramanisandeep.wordpress.com/


Area of Expertise:
C#, ASP.NET, Web Services, WCF, ASP.NET MVC, SQL Server, WEB API, AngularJS, jQuery
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.
Software Developer
India India
I am a Microsoft technology enthusiast having experience on various flavors of Microsoft Technologies which includes ASP.Net, Winforms to Silverlight, WPF.

I hold MCTS Certification on .Net 2.0 and Silverlight 4.0
United States United States
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.
Web Developer
Switzerland Switzerland
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.
Software Developer
New Zealand New Zealand
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.
United States United States
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.
Web Developer
Iran (Islamic Republic of) Iran (Islamic Republic of)
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.
Technical Lead private interest
Germany Germany
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.
Web Developer
Australia Australia
This member doesn't quite have enough reputation to be able to display their biography and homepage.
Software Developer (Senior)
Israel Israel
Web services interoperability expert.

http://webservices20.blogspot.com/
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1 Feb - 28 Feb 2011