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C# 3.0

C#3.0

Great Reads

Cryptographic Interoperability: Keys

by Jeffrey Walton

Import and export Cryptographic Keys in PKCS#8 and X.509 formats, using Crypto++, C#, and Java.

Calcium: A Modular Application Toolset Leveraging PRISM – Part 2

by Daniel Vaughan

Calcium provides much of what one needs to rapidly build a multifaceted and sophisticated modular application. Includes a host of modules and services, and an infrastructure that is ready to use in your next application.

Simple Method of DLL Export without C++/CLI

by Dark Daskin

Article describes how to build an assembly that exposes functions to unmanaged code without C++/CLI

WPF: If Carlsberg did MVVM Frameworks: Part 6 of n

by Sacha Barber

It would probably be like Cinch, an MVVM framework for WPF.

Latest Articles

Design Pattern FAQ - Part 1 (Training)

by Shivprasad koirala

Design Pattern FAQ - Interview Questions (Quick Reference)

DICOM Image Viewer

by Harsha T, Amarnath S, S Mahesh Reddy

A simple viewer of images stored in the DICOM 3.0 File Format (C#). The file should have raw pixel data, uncompressed. Window Level functionality is also provided.

Sprache.Calc: Building Yet Another Expression Evaluator

by AlexeyYakovlev

This paper demonstrates a technique of building Sprache parsers using grammar inheritance.

Reuse a Single ClickOnce Build for Different Life-cycle Endpoints for an Application

by Randy Kroeger

This article provides an example on how you can change application configuration settings within an existing ClickOnce publish, update the manifest files, followed by using the Mage utility for updating the manifest using the existing cert file.

All Articles

C# 3.0

"About c#.net project deployment"

18 Sep 2011 by ravibulls007

I want to deployment my c#.net project .i want set up that will be created after deployment will installmssql 2005,.net freamwork ,and the server name should be automatically willbe changed on my connection string in my project..So Please Help Me The Step To Do such type of...

"About c#.net project deployment"

18 Sep 2011 by OriginalGriff

You should not include SQL Server in your installation. There are a couple of reasons:0) You can only distribute SQL Server Express for copyright reasons - not SQL Server full version.1) They may already have SQL Server installed on the network. If so, then they will presumably want to use...

"C# Hooks For RRDtool"

26 May 2010 by Mike Corley

C# (.NET and Mono) library provider for RRDtool

"Collection was modified; enumeration operation may not execute "

9 Aug 2012 by Kamalkant(kk)

"Collection was modified; enumeration operation may not execute " Why this error is coming when execute my below code:This is my Window Form Application in .Net1.I am using a Global class for reading instance message and shown it to a Textbox2.It is executing fine but some time showing...

"Collection was modified; enumeration operation may not execute "

9 Aug 2012 by Richard MacCutchan

Your question is a bit of a mess so it is difficult to be certain what is happening and when, but I suspect you are adding or removing an item from your list within the foreach loop. That is what the error message is telling you.

"Dynamic Folders"

28 Aug 2010 by Clifweb

I wish to create like a sub-folder to the site that each sub-folder represent is checked with the database and if found loads the page "www.codeproject.com/center.aspx?id=test" but with different content.For Example:www.codeproject.com/test...

"Dynamic Folders"

17 Aug 2010 by Fayu

Look into asp.net routing for webforms:http://www.4guysfromrolla.com/articles/051309-1.aspx

"Extension Properties" Revised

23 Mar 2015 by Oleg Shilo

The extremely simple implementation of generic "Extension Properties"

"how to generate barcodes in windows application in crystal report "

14 Mar 2013 by Imtiyaz10

I am Imtiyaz Ansari. I have 1 year experience in C# .net. I can't complete my barcode project. So please send me helpful code(link). How to generate barcodes in windows application in crystal report?"

"if statement" have multiple parallel conditions,Which style is more efficient I wrote?

21 Jan 2013 by zqliu

f1(), f2(), f3() is a function of type bool, which of the following style is better? A. if (f1 () && f2 () && f3 ()) do (); B. if (f1 ()) if (f2 ()) if (f3 ()) do ();If three function execution time is longer, is B method is better? Or they are just the same...

"if statement" have multiple parallel conditions,Which style is more efficient I wrote?

21 Jan 2013 by PIEBALDconsult

They should be about the same. I prefer A; it's more polished. Any fool can do B.

"if statement" have multiple parallel conditions,Which style is more efficient I wrote?

21 Jan 2013 by nv3

It actually doesn't matter from a run-time point of view. In other words, A and B will run equally fast. For readability purposes, however, I would always prefer A. or better yetif (f1() && f2() && f3()) doSomething ();

"if statement" have multiple parallel conditions,Which style is more efficient I wrote?

21 Jan 2013 by Abhinav S

I'd prefer A. If (f1 () && f2 () && f3 ()) do (); because it is much more clearer and easier to understand.You are using && which is a short circuit operator.If the first condition fails the second won't execute so there will be no difference in execution time in either case.

"if statement" have multiple parallel conditions,Which style is more efficient I wrote?

21 Jan 2013 by Andreas Gieriet

You left out a 3rd variant:bool hasSomethingToDo = f1() && f2() && f3();if (hasSomethingToDo){ DoSomething();}and a 4th variant:bool hasSomethingToDo = f1() && f2() && f3();if (hasSomethingToDo){ DoSomething();}Usually,...

"if statement" have multiple parallel conditions,Which style is more efficient I wrote?

21 Jan 2013 by H.Brydon

Any C/C++ compiler nowadays will treat both the same way and generate either the same code or almost the same code.A point perhaps more important than performance for this one-liner is maintainability. In most cases, 'A' is the better choice - if the logical tests are truly function names or...

"input string is not in correct format" error when updating Datatable

11 May 2011 by siva455

hi ,I have a Datatable which needs to be sorted on header click on column name Min% and I have tried the below code...the datasource for the dgGridview is set earlierprivate int SortOrder=-1;The below code is in dgGridview_ColumnHeaderclick eventDataView dv = new...

"input string is not in correct format" error when updating Datatable

11 May 2011 by OriginalGriff

Assuming your code actually works - I haven't checked - then your problem is simple: you are doing something silly, and I don't know why: dcColumn.DataType = System.Type.GetType("System.Decimal"); tem = row[column].ToString().Replace(" ", "%"); row[column] =...

"The remote server returned an error: (502) Bad Gateway."

11 Aug 2011 by Member 8081020

I m working on website which sms sending applicationpublic string SendHighPriorityXMLtoValueFirst(long dateTicks, long targetNo, string msgType, string msgHdr, string msgDtls, string from) { try { WebProxy _webProxy = null; ...

"The remote server returned an error: (502) Bad Gateway."

11 Aug 2011 by Herman<T>.Instance

some tips: http://www.checkupdown.com/status/E502.html[^]you better talk to some sysadmins since the error is not IN your code but caused by calling external machines. Probably you do not have the rights to connect to that machine

"unsafe" is this one error

8 Aug 2010 by Eddy Ho 88 from Singapore

Error 1 Unsafe code may only appear if compiling with /unsafe Program.cs 12 28 Project-244public unsafe void Main()

"unsafe" is this one error

8 Aug 2010 by Sandeep Mewara

Go to your Project properties and under Configuration Properties, Click on build and then change Allow Unsafe Code blocks to true.Well, if needed read more about how to use unsafe here: Using Unsafe Code in C#[^]

'Aspect Oriented Programming' Implementaion

9 Jan 2012 by ashriv

Hello Friends, I am trying to develop a web Application with the concept of Aspect Oriented Programming using C#.Net 3.5 . I want to know the better way to Implement it.Shall I use Unity Concept or go with POSTSHARP? which one is better? Thanks.

'Aspect Oriented Programming' Implementaion

9 Jan 2012 by Ganesan Senthilvel

Aspect Oriented Programming using Postsharp is more faster than Unity. Postsharp is highly preferable for the various reasons like code enhancement, suitability of large projects, etc.Detailed comparison table is available at: http://www.sharpcrafters.com/postsharp/alternatives[^]

'Extending' the Enum Class to Validate the Enum Values with the Flags Attribute

4 Jan 2008 by dmihailescu

Use extension methods to augment the enums to validate the values and more

'Maximum request length exceeded' error message while trying to export data to excel.

4 Mar 2013 by Member 9104788

Hi, I am using framework 3.5, is 6.0 and Excel 2003 for my application. I am getting an error message 'Maximum request length exceeded' while I am trying to export data to excel from a data table. I have already given in web.config and I increased the value to 1000000.Still I am getting same...

'Maximum request length exceeded' error message while trying to export data to excel.

4 Mar 2013 by Tharaka MTR

Please check followinghttp://social.technet.microsoft.com/Forums/en-US/sqlreportingservices/thread/0da08501-4655-4012-ad0e-60a81ebf55e8[^]

'Maximum request length exceeded' error message while trying to export data to excel.

5 Mar 2013 by crazie.coder

Hi...Add this line in your web.config in between tag.I will surely solve your problem.

'Maximum request length exceeded' error message while trying to export data to excel.

5 Mar 2013 by crazie.coder

Oh...Sorry due to my typing mistake i missed the linesline is add this in web.config,b/w the tag.

'Maximum request length exceeded' error message while trying to export data to excel.

6 Aug 2013 by RSKKUMAR056

Juhi Paunikar Thank you Very Much Its Working for me

'System.Threading' (are you missing an assembly reference?)

20 Apr 2012 by ssnurudeen

the error occur while doing a Windows Mobile application 6.1 on visual studio 2008.net framework 3.5 while creating a proxy class using wsdl The type or namespace name 'SendOrPostCallback' does not exist in the namespace 'System.Threading' (are you missing an assembly reference?)But...

'System.Threading' (are you missing an assembly reference?)

20 Apr 2012 by OriginalGriff

It doesn't look like it is supported in Mobile 6.1: just 7.0 under XNA or Silverlight: http://msdn.microsoft.com/en-us/library/system.threading.sendorpostcallback(v=vs.96).aspx[^]

(c#) how to detect the monitor status

23 Aug 2012 by scoket

I have a console application. Import a Dll to get the monitor status. such as the monitor is off or monitor is on. i use the "protected override void WndProc(ref System.Windows.Forms.Message m)" mothod in the dll project,of course i have to use the "WndProc" method under a winForm....

(c#) how to detect the monitor status

23 Aug 2012 by Abhinav S

You can look at using WMI[^] contains anything useful for you.

(Duplicate Post, Ignore)how to call functions from unmanaged dll

21 Jan 2010 by aasifaslam

hi ,Please can anyone help me ?i m trying to call a function say getdevice();which is present in my unmanaged dll. the function in dll has parameters say getdevice(char **pDeviceList,int *pDeviceCount, unsigned longulFlags)actually i m using c# and doing coding in c# as well and my dll...

(Duplicate Post, Ignore)how to call functions from unmanaged dll

21 Jan 2010 by J a a n s

You can call your unmanaged methods using PInvoke. Check the folllowing articles for details.http://msdn.microsoft.com/en-us/library/aa446536.aspx[^]http://msdn.microsoft.com/en-us/magazine/cc164123.aspx[^]

(Improved) Fast syntax highlighting control!

1 Feb 2013 by Yvar Birx

Syntax highlighting has never been so easy!

(Much) Faster Silverlight Scrolling

10 Dec 2008 by Jerry Evans

Improving scrolling performance in Silverlight

(Re) Introducing AJAX for ASP.NET with Prototype

17 Dec 2008 by thund3rstruck

Writing and using cross platform AJAX in ASP.NET applications.

+= operator in Multicast Delegate

4 May 2011 by M.CHAITHANYA

Hi, Can anyone please tell me ,if "+=" operator is overloaded by Microsoft.for eg: delegate double demodel(int a)demodel dd=classname.getsumdoublevale demodel+= classname.getmuldoublevalue ------what exactly happens here? regardsChaithanya M

+= operator in Multicast Delegate

4 May 2011 by Kim Togo

Look at this great CP article.C# Event Implementation Fundamentals, Best Practices and Conventions[^]

+= operator in Multicast Delegate

29 May 2011 by Sergey Alexandrovich Kryukov

The question is not so trivial. If you look at the delegate instance dd you will find that this is an instance of some… class. This class actually encapsulate a lot of functionality. In particular, it has the container of handlers called "invocation list", accessible through...

.NET / XML Serialization

11 Oct 2007 by aSarafian

An article that tries to clear up the concept of serialization.

.NET 2.0 Configuration and Provider Model

27 Mar 2010 by Sergey Sorokin

Use .NET 2.0 configuration features for building a pluggable provider framework for your application.

.NET 2.0 Workaround for PathTooLongException

17 Dec 2007 by Balaji Lakshmanan

Using the Unicode version of CreateFileW, we can overcome the PathTooLongException error on file operations.

.NET 4.0 MEF FAQ (Socket, Plug and extension)

8 Sep 2010 by Shivprasad koirala

.NET 4.0 MEF FAQ (Socket, Plug and extension)

SQL-server-2000

.net applcation memory management

22 Apr 2013 by omgade

Hi,i have one problem in .net application.Problem is when i click on any button of form then CPU memory increase.But when i am again click on that button then again increase CPU memory.How can i decrease memory when second time click on button ?Regards,Om.

.NET Asynchronous Patterns

6 Jan 2014 by Assil

This article describes asynchronous patterns in .NET and how to do them.

.NET Best Practice No: 1:- Detecting High Memory consuming functions in .NET code

16 Aug 2010 by Shivprasad koirala

.NET Best Practice No: 1:- Detecting High Memory consuming functions in .NET code

.NET framework 4.0 to 3.5

27 Jul 2012 by itsureshuk

Hi Frnds, I Downloaded Aspx .net Website code in code project...It is in FrameWork4.0 ...But i have 3.5 Framework only...How to convert 4.0 to 3.5 framework run the website...

.NET framework 4.0 to 3.5

27 Jul 2012 by Christian Graus

You probably can't load the solution, but you can create a new one and copy the code across. Odds are good it will work, or at least give you errors until you've changed it so it does. Create a new solution. Copy the 4.0 solution to the folder. Add all the files using 'add existing file'. ...

.NET framework 4.0 to 3.5

27 Jul 2012 by Mehdi Gholam

Try SharpDevelop http://www.icsharpcode.net/OpenSource/SD/[^], it can convert project types between .net versions.You will probably get a lot of errors downgrading if you are using .net 4 specific features.

.NET Framework Basics - Preparation for exam 70-536

11 Mar 2010 by fabianse

Base practice code for those preparing the exam 70-536 or learning the .NET framework basis

.NET Framework Delegates: Understanding Asynchronous Delegates

27 Aug 2009 by logicchild

An article to help clarify delegates and how to use them asynchronously.

.NET Framework Runtime Serialization

22 May 2009 by logicchild

An article with a focus on object serialization.

.NET Framework Zip / UnZip Tool Using the Packaging Namespace

10 Sep 2008 by Mayur Chauhan

An UI tool that can be used to zip and unzip a file.

.NET Generics in a Nutshell

23 Dec 2009 by Sunil Pandita

Generics in .NET explained.

.NET Gridview with AJAX and REST Web Services

31 Aug 2010 by Livio Francescucci

How to create an ASP.NET gridview AJAX enabled connected with WCF SOAP and REST webservices.

.NET Installer that Automatically Installs SQL 2005 Express

28 Jul 2008 by John Kenedy S.Kom

This project enables developer to create a setup package that automatically installs SQL 2005 Express and restores database to it

SQL-Server-2005

.NET Interprocess Communication

14 Dec 2009 by TheCodeKing

An easy-to-use, zero configuration solution to .NET communication across application boundaries. A simple library to use as an alternative to .NET Remoting based on low-level Windows Messaging.

.net interview questions for 2-3 years exp

31 Jul 2012 by R. Giskard Reventlov

An impossible question to answer since every interviewer will have a different set of questions to ask. Some may ask few, if any, technical questions preferring to concentrate on finding out how and why you tackle problems and trying to gauge your enthusiasm (very important), whilst others will...

.net interview questions for 2-3 years exp

31 Jul 2012 by Monjurul Habib

You will find almost all over here :)I just picked my favorite two links from the above:New Interview Questions for Senior Software Engineers What Great .NET Developers Ought To Know (More .NET Interview Questions)

.net interview questions for 2-3 years exp

31 Jul 2012 by Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Check these out-Asp.net Interview Questions for 2 years or 3 years experience[^].ASP.NET 2.0 Interview Questions - Intermediate Level[^]. Please tell me .Net interview Questions for 2+ Years Exp[^].

.net interview questions for 2-3 years exp

31 Jul 2012 by Sandeep Mewara

It depends on individuals who is taking the interview and who is giving it.Their ability, knowledge-base, need/requirement for the position, etc drives it. It's suggestible that you prepare what you have done in last 2 years and go ahead. One need to be a little hands on to be strong on a...

.net interview questions for 2-3 years exp

31 Jul 2012 by Sergey Alexandrovich Kryukov

I'm sure that preparing for the interviews is totally useless. Of course, some experience is useful, but you cannot get such experience by "preparation". You real knowledge and experience is important, and if you have it and know your real value, you will behave appropriately. In other words,...

.NET Mail Composer

6 Aug 2008 by SHRIDHAR TL

Compose mail messages and send them through your mail account provider.

.NET Mass Downloader - Download the .NET Framework Source Code

26 Apr 2010 by Izzet Kerem Kusmezer

With this tool you can download whole .NET Framework source code at once, and enjoy offline browsing. With it, you can have whole the source code without any Visual Studio product installed

.NET Multicast Delegates

2 Dec 2008 by Cirilo Meggiolaro

Multicast delegates provide functionality to execute more than one method.

.Net Performance tip - 2

22 May 2010 by Vinayaka Krishna Shenoy

.Net Performance tip - 2

.Net Performance tip - 2

22 May 2010 by DaveAuld

Here is a better evaluation of performance in .Net of the If / Switch operations;http://www.blackwasp.co.uk/SpeedTestIfElseSwitch.aspx[^]

.NET POP3 MIME Client

8 Feb 2008 by Wil Peck

This article provides an implementation of a POP3 MIME client using .NET 2.0 and C#.

.Net Profiler for Framework3.5

24 Aug 2010 by Ramya 2010

Hi,Will you please suggest a good .NET Profiler for the Framework 3.5. And I need the steps for how to check the performance of the application using .NET profiler... I Googled, but I didn't get the exact information.

.Net Profiler for Framework3.5

24 Aug 2010 by Sandeep Mewara

Try this:Visual Studio Team System Profiling Tool[^]Link contains detail about profiling tool with sample tutorial.

.Net Profiler for Framework3.5

24 Aug 2010 by Martin Jarvis

The red-gate profilers are excellent (and they have a free trial!)http://www.red-gate.com/products/dotnet_tools_overview.htm

.Net Profiler for Framework3.5

24 Aug 2010 by Kythen

EQATEC has a very good free profiler for .NET apps. It can also do .NET Compact Framework and Silverlight apps with a paid license.http://www.eqatec.com/Profiler/Home.aspx[^]

.Net Profiler for Framework3.5

24 Aug 2010 by Uwe Keim

We have bought a license of RedGate's ANTS performance and memory Profiler[^].A co-worker also tried JetBrain's dotTrace Profiler[^] (you know the ReSharper[^] guys)CheersUwe

11 Jan 2011 by raj dhakad

how to use user controls in asp.net?

11 Jan 2011 by #realJSOP

google "asp.net user controls".This is the first link out of 3.5 MILLION results returned:http://msdn.microsoft.com/en-us/library/fb3w5b53.aspx[^]

11 Jan 2011 by Kasson

User Control[^]Btw i request you to start reading there are lot of online books also available.As JSOP said first google it, it will give you lot of solutions.

.Net Reflection Problem

21 Sep 2010 by MatthysDT

O.k, this problem has been very evasive so far so I'm hoping someone here could help me.I have the following code to late bind to a VB6 DLL (via a wrapper created by the Type Library Importer)* Note the following code has been stripped of all error handling etc. for the purpose of this...

.Net Reflection Problem

21 Sep 2010 by ARopo

do you know which dll/ocx/exe implements the object wr_TCPIP_ASTM.TCPIP_ASTM_CommsClass (27CC4E03-D86D-40B5-96D4-F7EA5B148A0D)?You can find out using regedit - under classes rootHKEY_CLASSES_ROOT find wr_TCPIP_ASTM.TCPIP_ASTM_CommsClassunder wr_TCPIP_ASTM.TCPIP_ASTM_CommsClass should be...

.Net Reflection Problem

13 Jan 2012 by MatthysDT

Registering the components in a COM+ application in Component Service fixed this.

1 Jan 2008 by malikusman

DCOM component replacement in .NET is .NET remoting

.NET Remoting Events Explained

3 Mar 2010 by Ron Beyer

Explains producing and consuming .NET remoting events, the drawbacks, and advantages.

.Net Remoting using proxy class.

12 Apr 2011 by Ashwani Dhiman

Hi, I have created a Remote Object Class "OCL" to communicate b/w Server & Client.Server Side : HttpChannel myChannel = new HttpChannel(6300); ChannelServices.RegisterChannel(myChannel); RemotingConfiguration.RegisterWellKnownServiceType(typeof(OCL), "OCL",...

.Net Remoting using proxy class.

12 Apr 2011 by Nish Nishant

When you are invoking methods on a remote object, everything's analogous to how you'd be invoking those methods on a local object. Sending data and receiving data is just a matter of whether you are calling a method that returns data or whether you are calling a method that has parameters...

.net resx file problem

6 Sep 2011 by SAISAGAR nalla

i cerated a resx file for a form, when i created the setup for the application, i unable to access the resx file. how to do it?

.net resx file problem

6 Sep 2011 by Prerak Patel

Click the Setup Project in Solution Explorer and then click Add\Project Output\ . From dialog select the project for which you want to include localization (satelite) assemblies and then select Localized resources.After the installation in the folder that I install to, I have the th-TH folder...

.Net Script Editor (C#,Vb.net Mini IDE)

13 Jul 2008 by Rajneesh Noonia

The source code / article published here is to provide features of MS Script control (Functions like AddObject) and some features of VSA/Visual Studio editor like intellisence, code completion etc

.NET Targa Image Reader

15 Dec 2008 by David Polomis

Loads a Targa image file into a Bitmap using nothing but .NET code.

.NET technique for converting large text files into XML structures intended for Android objects

5 Jul 2012 by Mario Ghecea

This article describes the technique I used to ingest large text files to create an e-book publishing platform on the Android Market

.net Treeview control

5 Jul 2010 by asdfr23

how to arrange treeview node dynamically(user end) using C# code

.net Treeview control

6 Jul 2010 by William Winner

I think you're wanting to allow the user to move treeview items up or down or between levels. Is that correct?If so, you either need to create a set of buttons to do that (a right, left, up, and down button) and enable/disable based on the current selection. Or you need to implement drag...

.NET Versioning and Multi-targeting on C# Application and Component

3 May 2016 by Southmountain

this post discussed .NET versioning and multi-targeting of .NET application and component written in C#.

.Net web app run on safari browser

5 Sep 2011 by gopalomar

Hi all,I need to create a C#.Net web application, which can be run on safari browser(IPad 2)Is it possible?If yes, please guide me to create one.

.Net web app run on safari browser

5 Sep 2011 by Dylan Morley

Yes it's possible, it's just a web application after all - with a few restrictions regarding layout etcHave a read of this aricle [^]

.Net web app run on safari browser

6 Sep 2011 by Al Moje

Hi,I try this if could help:protected void Page_PreRender(object sender, EventArgs e){ HtmlMeta metatag = new HtmlMeta(); metatag.Attributes.Add("http-equiv", "X-UA-Compatible"); metatag.Attributes.Add("content", "ID=EmulateIE7"); metatag.Attributes.Add("content",...

.Net Web Application LAyout

19 Dec 2011 by ahmedfaruk88

Hi Guys, Merry Xmas to you all.I'm currently developing an ASP.NET Application for my company that target a variety of users. After Uploading to our server it displays funny, like placing my login div to the right, but on the development machine it displays fine. After that CSS border-radius...

.Net Web Application LAyout

19 Dec 2011 by Abhinav S

This article[^] discusses layout issues and general compatibility in some detail.This[^] could prove useful as well.This[^] also might be useful.Here[^] is a list of tools that could help you test cross browser compatibility.

.Net Web Application LAyout

19 Dec 2011 by thatraja

Already answered similar questions here before in Q/A section, check it.Browser compatibility[^]

.net windows application

21 Sep 2010 by Mathuraiveeran.P

how to track and drop(move) lable in runtime in .net windows application using c#