Working with Custom Providers
page 8 of 8
by Brian Mains
Feedback
Average Rating: 
Views (Total / Last 10 Days): 53825/ 120

Conclusion

Providers are highly customized solutions met to meet a particular need that any existing provider, or other component, doesn't compare up to.  If developed with flexibility, custom providers can be very useful, not only in the original application, but in an application framework as well.  The key object types that make up the provider are the abstract class, the derived classes with the implementation-specific logic (for instance, connecting to a database, text file, etc.), the configuration section, and a static class that exposes the provider to the consumer.  The abstract class is a key component, because it makes all of the providers available to the static class.  All of the derived classes can implement their own functionality using the signature of the abstract class, meaning using all of the abstract methods, properties, and events.  The configuration section informs the static class which provider to use as the default.  The static class exposes the default provider to the consumer, being able to switch easily between providers because they all inherit from the same abstract interface.  In addition, custom controls can wrap the functionality inside them, making any interface with the API a simple dragging and dropping of the controls.


View Entire Article

User Comments

Title: Source Code   
Name: Satish Nandigam
Date: 2010-10-27 2:43:31 AM
Comment:
Hi This is a nice article . Can please provide the source code for custom Provider for the Newsletter.
thanks,
N.Satish
Title: Thanks   
Name: Anitha T S
Date: 2010-07-26 7:31:51 AM
Comment:
Thank you very much for your article on providers. Your article is easy to read and understand! I am a better because of it. ;)
Title: Question Reply   
Name: Brian Mains
Date: 2009-10-16 2:53:52 PM
Comment:
Hello,

Yes, DefaultProvider doesn't exist within ConfigurationSection; it exists in my custom base class, which I should have posted, but I didn't. My apologies.

In your custom section class, just add:

[ConfigurationProperty("defaultProvider")]
public string DefaultProvider
{
get { return (string)this["defaultProvider"]; }
}

[
ConfigurationProperty("providers", IsDefaultCollection=false),
ConfigurationCollection(ProviderSettingsCollection)
]
public ProviderSettingsCollection Providers
{
get { return (ProviderSettingsCollection)this["providers"]; }
}

That's what exists in my base class, as a helper. You can also download the project at: http://www.codeplex.com/nucleo, which has these files in Nucleo.dll, in the Nucleo.Providers namespace. I will be posting an update to this project soon with updated AJAX controls, but this code hasn't been touched so it will remain the same, if you are interested.
Title: Question   
Name: Mark Toth
Date: 2009-10-16 2:08:41 PM
Comment:
When I derive a class from ConfigurationSection I get the following error for DefaultProvider "no suitable method found to override". Am I missing something?
Title: Thanks   
Name: Mahr G. Mohyuddin
Date: 2009-04-22 9:21:56 AM
Comment:
Well explained, Brian!. Thanks.
Title: Many Thanks   
Name: Linda
Date: 2009-02-11 9:58:01 AM
Comment:
Thank you very much for your article on providers. Your article is easy to read and understand! I am a better because of it. ;)
Title: still confused reply   
Name: Brian
Date: 2008-08-28 8:50:50 AM
Comment:
The static class is a class separate from the rest of the code, which exposes the provider base class to the public. It's responsible for instantiating it.

SO this is something that should be in the same project as the provider, but is a separate class.
Title: still confused :(   
Name: .
Date: 2008-08-28 3:19:45 AM
Comment:
Would have been nice to be able to download code. I'm at a loss as to where to put the static class - whether I put it in the application which is trying to use the providers, or in the provider code itself as a separate class.
Title: good articles   
Name: I LIKE LT
Date: 2007-09-05 9:16:47 PM
Comment:
very good articles
Title: Good   
Name: Bilal Wani
Date: 2007-03-20 7:17:27 AM
Comment:
Nice Article!!!
Title: Patil   
Name: Sandip
Date: 2007-03-15 5:16:26 PM
Comment:
Nice Article!!!

-Sandip Patil
Title: Good   
Name: Ramamuni Reddy
Date: 2007-02-18 11:25:54 PM
Comment:
Hello Brian Mains,
Very Good Article.

With Regrads
Ramamuni reddy Mulapaku
Title: Provider Utility   
Name: Bilal Hadiar [MVP]
Date: 2007-02-06 6:07:46 AM
Comment:
Hello Brian,
It is a well written article, congratulations!

I would like to refer you and all the readers to a utility I created a while ago that helps you generate the skeleton of a provider files in a single button click,
Check it here:
http://bhaidar.net/cs/archive/2006/07/07/376.aspx

Regards
Title: Mr.   
Name: KotiReddy.
Date: 2007-02-06 12:30:15 AM
Comment:
Very Good Article.


Regards,
Koti Reddy. S






Community Advice: ASP | SQL | XML | Regular Expressions | Windows


©Copyright 1998-2021 ASPAlliance.com  |  Page Processed at 2021-12-08 2:17:46 PM  AspAlliance Recent Articles RSS Feed
About ASPAlliance | Newsgroups | Advertise | Authors | Email Lists | Feedback | Link To Us | Privacy | Search