Creating C# Class Library (DLL) Using Visual Studio .NET

I like the GUI, for old time sake.

Both creating DLL and accessing are easy to do.

Awesome article.explained in very easy way.it is piece of cake.

Great article and exercise for someone learning c# and refreshing the FUNdamentals!

Nice

Nice...

Good one

Very nice and important article for new developers. You have made this article simple to understand by anyone.

Good one

good one

good

this is really wow

Great Article

Thanks

THANKS SIR

Nice Article.

Thank you so much sir!

Thank You..

nice

thanks nice article..

nice article!!

Hello, Mr. Chand I am working on a Window CE based project. I wnat to call a compact .NET DLL method from a compact .NET application both are on our handheld device. And the DLL resides in a folder different from the one where the application resides. I am developing the DLL and application on a desktop computer. When I build the application, I can use reference to the DLL. But on the device, how will I be able to load the DLL and call the method when the DLL is in a obscure folder. If I use Aseembly.LoadFrom() and then what can I do with it to call a method called aDLLMethod() of the DLL. Jun

hi i want import a dll file to my program.(note that i want import a external dll file to program, no build a dll file or class library in c#)

Very very good article very helpful....

Hello Mahesh, Great article and easy example that helps to grasp a cool development idea. MS themselves do not have such thing although it would not hurt. Please help in my thinking. Say I have in development one class library project and one web application project. After adding reference in my Web App to the Class Libr Project I can see a copy of the Cl Li Pr's DLL into the Web App's Bin folder. Now, when I go to deploy my Web App to the Production Server - Do I need anything else exept that that DLL into my Web App's Bin folder. Is there something that shuld be doen with the original CLP. Does it just stay and help only on the Dev side. If I make some changes into the CLP (say that do not break the external methods' structure) can I just replace the CLP's DLL on the Prod server or again I need to replace both Web App's DLL with the CLP's DLL. Thank you very much.

Hello Sir,while rading this article i found this is an interesting article but when i am right clicking Class1.cs there is no option of Add.please help me in this

Hello Sir,while rading this article i found this is an interesting article but when i am right clicking Class1.cs there is no option of Add.please help me in this

i m not understanding after adding the class libaray file in project... help me plzzz

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how can i get class file from any .dll?can u send me procedure for it..

Thanks man u are a great help to me .

Hi , Great example! I have been creating your example and it works fine in another program that uses vba like scripting. The only thing i see is that intellisense is not working. How can i make it work that after i enter a point i see all available methods? Thanks!

but if i want to use combination of functions e.g if in class i wrote function for datafetch and exceutenonquery & i want to use it in my form such as Datafetch.Excetuenonquery() Then how to use it

but if i want to use combination of functions e.g if in class i wrote function for datafetch and exceutenonquery & i want to use it in my form such as Datafetch.Excetuenonquery() Then how to use it

ela ela keep it up machoo!

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="ProgId" content="Word.Document"><meta name="Generator" content="Microsoft Word 11"><meta name="Originator" content="Microsoft Word 11"><link rel="File-List" href="file:///C:%5CDOCUME%7E1%5CArif%5CLOCALS%7E1%5CTemp%5Cmsohtml1%5C01%5Cclip_filelist.xml"><!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:PunctuationKerning/> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:Compatibility> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <w:DontGrowAutofit/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" LatentStyleCount="156"> </w:LatentStyles> </xml><![endif]--><!--[if gte mso 10]> <![endif]--><!--[if gte mso 9]><xml> <o:shapedefaults v:ext="edit" spidmax="1026"/> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext="edit"> <o:idmap v:ext="edit" data="1"/> </o:shapelayout></xml><![endif]--> Very helpful article

I have Added a reference to this DLL from a project and deployed(copied exe to network frive) the exe I created from that project. Now if I change anything in the DLL, the exe is not picking up latest changes. What is the proper way of doing it. Thanks, Kaashi.

Weel Article Which solved my problem

C-sharpcorner regularly has helpful examples of basic C# techniques, without a lot of complexity. Thanks Mahesh!

And your article saved my fiscal week! Thank you, thank you, n143juju

hi : how does the Assembly show its property's or method's tooltips just as system's assembly, when i use it in another project?

hi magesh how to pass dropdown object as argument in dll method in c# .net please help me.............

hi magesh how to pass dropdown object as argument in dll method in c# .net please help me.............

When i build mcClient, how can i make it possible so that it builds the mcMath.dll into a folder say 'plugins' i.e in my bin\Debug\ i will have mcClient.exe and it build and call mcMath.dll from bin\Debug\plugin

When i build mcClient, how can i make it possible so that it builds the mcMath.dll into a folder say 'plugins' i.e in my bin\Debug\ i will have mcClient.exe and it build and call mcMath.dll from bin\Debug\plugin

I already have a dll file that i want to add in my C# project but when am adding a refernce it gives me this error "a reference to"my dll" could not be added .please make sure that the file is accessible,and that it is a valid assembly or a COM component." ? please infor me what to do thank you

How can i view it

hi i have one classlibrary and i want to use it in an application i whant to access my fnctions with progid but i am facing this error:unable to get clsid from progid

how can i add a method in visual C# 2005? the menu that appears doesn't contains "Add > Method" button.

Hi, i want to see the implementation of a .dll file.implementation of methods. how can?

Mahesh, Just today I was wondering how to do this (new to C#) and shazaam here you are. Very clear and concise in such a short demonstration. Ususally something is lost in some of the shorter tutorials but I was able to implement this right after the tutorial. I see that you are an author and was wondering what other pearls of wisdom you have written and where can they be found. Thanks again

add reference

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Hi Mahesh, I created a dll and referred to it just like you said in your article. However, I get the error : The type or namespace name 'myDLL' could not be found (are you missing a using directive or an assembly reference?) I found an article saying I should use the "Project" tab in "Add Reference" to add my dll. I did and it's still not working. My DLL and Console apps are in the same Solution. Would you please give me a suggestion as how to fix the problem? Thanks, TA

Hi Mahesh, I created a dll and referred to it just like you said in your article. However, I get the error : The type or namespace name 'myDLL' could not be found (are you missing a using directive or an assembly reference?) I found an article saying I should use the "Project" tab in "Add Reference" to add my dll. I did and it's still not working. My DLL and Console apps are in the same Solution. Would you please give me a suggestion as how to fix the problem? Thanks, TA

Dear Mahesh Its a very simple and nice article. Can i add dll for a web site project. Thanks Amila

Is it possible to use one dll on two applications running at the same time? Using dll let's say App1's output will be the input of App2. If yes, would you be kind to show me some examples. Thank you.

Is it possible to use one dll on two applications running at the same time? Using dll let's say App1's output will be the input of App2. If yes, would you be kind to show me some examples. Thank you.

If you can tell me how to use a cs dll in visual basic 6 or were I can find information about it. Thanks.

Hello mahesh, I have created a dll with the help of your example code. My code is as following: using System; using System.Collections.Generic; using System.Text; using System.Windows.Forms; namespace DRLAW { public class FolderDialog { public void OpenFolder() { FolderBrowserDialog FBDlog = new FolderBrowserDialog(); FBDlog.Description = "Selecteer de Benodigde map:"; FBDlog.ShowNewFolderButton = true; if (FBDlog.ShowDialog() == DialogResult.OK) { MessageBox.Show(FBDlog.SelectedPath, "Test", MessageBoxButtons.OK); } } } } but i cant register it with regsvr32'in windows Could you tell me what i am doing wrong ? Thanks for the help in advance Kind regards Peter

How can i Make DLL From Cs file?

How can I call a method and it's parameters from a library within a form for using that method and it's parameters to validate a text box

how can i use this sample dll (mcMath.dll) with vba?

How would you add the assembly inforation to a class like this. i have a simple class I am trying to use with Report Services. I have created a key pair, copied dll to correct directories and modified confi files. When I try to add the reference I am told it does not contain assembly information. Thanks

if i have to call McMath dll at run time then how can achieve this.