Understanding and Using Partial Classes in C#
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by Brendan Enrick
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Partial Interfaces and Structs

The partial keyword is not limited to just classes. It may also be used for interfaces and structs. When you're creating an interface or a struct you might also want to have the code separated. You declare a partial interface or a partial struct the same way as the partial class. You simply add in the keyword partial. The following code shows how to declare a simple partial interface and a simple partial struct.

Listing 4: Simple Partial Interface

public partial interface IPlayable
{
  Move GetMove();
}

This is just one partial interface defined here. We might have another piece located elsewhere. This is a very simple interface and it is obviously for my AIPlayer I listed above.

Listing 5: Simple Partial Struct

public partial struct Move
{
  public int column, row;
      
  public Move(int c, int r)
  {
    column = c;
    row = r;
  }
}

We use these the same way we use partial classes, and for the same reasons. Make sure that you're always using the partial keyword for every definition of the class, interface, or struct. You will probably less often need to use interfaces and structs as partial, but if the need arises now you know. You'll be able to create these as partial and allow for more maintainability in your code.


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User Comments

Title: sizar   
Name: sizar
Date: 12/1/2012 1:43:44 AM
Comment:
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: 11/15/2012 6:38:39 AM
Comment:
1
Title: *   
Name: *
Date: 9/6/2012 9:38:19 AM
Comment:
*
Title: partial class   
Name: Bijay
Date: 9/4/2012 12:52:54 PM
Comment:
Thanks ,but not enough.
Title: Partial Class   
Name: Manoj
Date: 8/9/2012 9:19:03 PM
Comment:
good . Easy to understand !!!
Title: w   
Name: w
Date: 7/2/2012 6:25:22 AM
Comment:
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Name: sdf
Date: 6/12/2012 5:14:19 PM
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Title: Awesome   
Name: Vinod
Date: 5/15/2012 1:07:46 AM
Comment:
Very Good and helpfull
Title: thanks   
Name: ajith
Date: 8/26/2011 7:54:19 AM
Comment:
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Title: thanks   
Name: shaheen
Date: 1/13/2011 1:13:12 AM
Comment:
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Name: smithu valsalan
Date: 1/13/2011 1:07:37 AM
Comment:
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Title: kumar   
Name: umesh
Date: 12/16/2010 2:36:39 AM
Comment:
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Title: Excellant Artical   
Name: Haribabu Nimmagadda
Date: 7/22/2010 7:58:00 AM
Comment:
It helps me alot.
Title: Good one!   
Name: Lakshmi Sudheendra
Date: 5/26/2010 8:53:17 AM
Comment:
Very useful article. Described in simple words and optimally covered the essential topics.
Title: excellent   
Name: vasudev
Date: 5/22/2010 6:10:46 AM
Comment:
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Title: I like the justification   
Name: george
Date: 2/24/2010 10:20:43 AM
Comment:
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: 2/16/2010 9:29:59 AM
Comment:
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Title: Wonderfull   
Name: s.arul
Date: 2/9/2010 8:17:46 AM
Comment:
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Title: Good   
Name: Sanjeev
Date: 2/9/2010 5:29:54 AM
Comment:
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: 12/22/2009 8:04:24 AM
Comment:
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: 11/2/2009 6:07:40 AM
Comment:
Very Nice Article!!
Title: Excellent !!   
Name: Sai
Date: 10/30/2009 3:10:32 AM
Comment:
Nice article for beginners.
Title: partial class   
Name: vikash kumar
Date: 10/15/2009 6:07:41 AM
Comment:
Article written by you is good but not enough.pls modify it.
Title: Great little read   
Name: Piao!
Date: 9/18/2009 11:34:43 AM
Comment:
Good writing style, and nice real world examples - cheers man!
Title: Nice Article   
Name: sam
Date: 9/9/2009 7:42:56 AM
Comment:
nice article Enrick. Can you suggest me some article on delegates & events?
Title: Good Article   
Name: Rajender Kumar
Date: 8/28/2009 12:49:41 AM
Comment:
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: 7/1/2009 8:01:46 PM
Comment:
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: 1/29/2009 1:48:30 AM
Comment:
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: 1/13/2009 4:12:44 AM
Comment:
very good article
Title: I am heap to get you   
Name: zinabu Alemayehu
Date: 11/8/2008 10:00:40 AM
Comment:
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: 9/23/2008 10:55:07 AM
Comment:
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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