Understanding and Using Partial Classes in C#
page 1 of 8
Published: 28 Dec 2007
In this introductory article, Brendan describes how partial classes work and how to create partial classes. He walks you through when to use partial classes as well as how to implement multiple interfaces with partial classes. The examples used will help beginners learn about this useful technology.
by Brendan Enrick
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Views (Total / Last 10 Days): 56453/ 47


One great addition to C#, (also added into VB, but I don't cover that much here) introduced with the .NET Framework 2.0, is support for partial classes. This is a very powerful tool made available to developers. It allows you to have multiple pieces of a class definition. Functionally, partial classes are not at all different from classes written as full classes. Which means you can have one single class definition or a class written as a few distinct parts, so you need not worry about partial classes breaking existing functionality.

If you've done any ASP.NET work since 2.0 you've probably already seen partial classes. Perhaps you did not know you were working with them, but with ASP.NET sites every page created is actually using partial classes. The other part of the partial class is created from the .aspx file.

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User Comments

Title: sizar   
Name: sizar
Date: 2012-12-01 1:43:44 AM
please check this website for more information http://fantasyaspnet.blogspot.in/2012/11/write-program-in-c-to-implement.html
Title: 1   
Name: 1
Date: 2012-11-15 6:38:39 AM
Title: *   
Name: *
Date: 2012-09-06 9:38:19 AM
Title: partial class   
Name: Bijay
Date: 2012-09-04 12:52:54 PM
Thanks ,but not enough.
Title: Partial Class   
Name: Manoj
Date: 2012-08-09 9:19:03 PM
good . Easy to understand !!!
Title: w   
Name: w
Date: 2012-07-02 6:25:22 AM
Title: sfd   
Name: sdf
Date: 2012-06-12 5:14:19 PM
Title: Awesome   
Name: Vinod
Date: 2012-05-15 1:07:46 AM
Very Good and helpfull
Title: thanks   
Name: ajith
Date: 2011-08-26 7:54:19 AM
super discription
Title: thanks   
Name: shaheen
Date: 2011-01-13 1:13:12 AM
Title: good   
Name: smithu valsalan
Date: 2011-01-13 1:07:37 AM
very useful article
Title: kumar   
Name: umesh
Date: 2010-12-16 2:36:39 AM
Title: Excellant Artical   
Name: Haribabu Nimmagadda
Date: 2010-07-22 7:58:00 AM
It helps me alot.
Title: Good one!   
Name: Lakshmi Sudheendra
Date: 2010-05-26 8:53:17 AM
Very useful article. Described in simple words and optimally covered the essential topics.
Title: excellent   
Name: vasudev
Date: 2010-05-22 6:10:46 AM
excellent jestification
Title: I like the justification   
Name: george
Date: 2010-02-24 10:20:43 AM
I was aware of the autogenerated code case, but code merging is the real day to day convenience this feature provides.
Title: very good explanation   
Name: krishna kishore
Date: 2010-02-16 9:29:59 AM
your explanation is very clear. and simple
Title: Wonderfull   
Name: s.arul
Date: 2010-02-09 8:17:46 AM
Wonderful article for asp.net beginers
Title: Good   
Name: Sanjeev
Date: 2010-02-09 5:29:54 AM
Here in ur article u have described enough.. but plz try to add more examples so it will clear the doubts of readers.. all the best
Title: Good   
Name: Laxmi
Date: 2009-12-22 8:04:24 AM
Its good but I have a question.I have a class which is splitted into two partial classes.These two partial classes have same methods.what happens at compile time.Please help me.thanks in advance..
Title: Nice Article   
Name: Senthil
Date: 2009-11-02 6:07:40 AM
Very Nice Article!!
Title: Excellent !!   
Name: Sai
Date: 2009-10-30 3:10:32 AM
Nice article for beginners.
Title: partial class   
Name: vikash kumar
Date: 2009-10-15 6:07:41 AM
Article written by you is good but not enough.pls modify it.
Title: Great little read   
Name: Piao!
Date: 2009-09-18 11:34:43 AM
Good writing style, and nice real world examples - cheers man!
Title: Nice Article   
Name: sam
Date: 2009-09-09 7:42:56 AM
nice article Enrick. Can you suggest me some article on delegates & events?
Title: Good Article   
Name: Rajender Kumar
Date: 2009-08-28 12:49:41 AM
i am a web developer Asp.Net C#. i have read this article, that is well understandig for beginners.
Thanks for taking time for this post.
Title: Thank you   
Name: phil
Date: 2009-07-01 8:01:46 PM
Thanks for posting this. I despise .net but I have to do it at work so its nice to find articles that teach the concepts rather than syntax.
Title: confuseeeeeeeeee   
Name: sagar
Date: 2009-01-29 1:48:30 AM
Hi.. i am cleared abt partial class in c#.... but u r article mix with aspx... ca u clarify this
Title: partial classes   
Name: shraddha
Date: 2009-01-13 4:12:44 AM
very good article
Title: I am heap to get you   
Name: zinabu Alemayehu
Date: 2008-11-08 10:00:40 AM
I need some help from you based on the asp,c#,and vb.if you get full of code about some project please send to me via my email.

I always Thank u.........
Title: Thank you   
Name: Shawn F.
Date: 2008-09-23 10:55:07 AM
Thanks for taking the time to post this. It helps clear things up.

BTW...You're able to describe things well enough for me.

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