Comments on: ASP.NET MVC Model Binders

By: Jarrett

Jarrett — Sun, 16 Oct 2011 01:57:26 +0000

I echo Andrew Knox here in saying finally, a decent post on how to easily extend the default model binder.

By: DalSoft

DalSoft — Mon, 11 Apr 2011 21:32:00 +0000

You shouldn’t connect to the database via a model binder instead get the data from the database in the controllers action. The model binder is for binding the http request to your model, from the controllers action you then use the model values to query your database. If your worried about performance consider system.web.caching or output caching, if you have the choice go for output caching

By: Scott

Scott — Mon, 11 Apr 2011 16:49:57 +0000

Thanks for this – very concise. I’m stuck at an architectural challenge, that you touch on in your Best Practice section. In real life, the Offices are out in a database somewhere, so how do you go fetch the appropriate record in a ModelBinder.
I agree that the ModelBinder should not be calling directly to the database, but the only other option I can see is to add all the Offices into the ViewBag (or similar) and iterate through them via the controllerContext.
But that seems quite expensive, especially if you had 43,000 offices…

By: Andrew Knox

Andrew Knox — Sat, 12 Mar 2011 15:03:52 +0000

Thank you. Finally a decent article on the basics model binding (well, I’d not come across any at least!), helped me out a lot

By: RCM

RCM — Wed, 09 Mar 2011 13:33:55 +0000

Great article. In the custom model binder, is there a way to re-validate the model after you update it with the List of Offices? Say your Offices model had DataAnnotations on it. Is there a way to validate the model and have it update the ModelState with any errors?

By: Kyle Russell

Kyle Russell — Fri, 27 Aug 2010 19:20:08 +0000

Could you post an example of the improvement you proposed by not using the magic string? I’m curious how that would work. Finding decent articles about things like model binders is not easy. Your posts have been extremely helpful. Thanks

By: ASP.NET MVC 2 -Template Helpers Allow You to Specify Extra View Data

ASP.NET MVC 2 -Template Helpers Allow You to Specify Extra View Data — Fri, 30 Jul 2010 21:41:00 +0000

[...] nasty hacks. In this post we are going to continue our Employee example from my MVC Templates and MVC Model Binders posts, we will change the code to make use of the new [...]

By: Carlos

Carlos — Sun, 18 Jul 2010 14:15:21 +0000

Beautiful code and explanation. Thanks for the hard work!

By: Methods

Methods — Sun, 06 Jun 2010 23:58:01 +0000

good information, you write it very clean. I am very lucky to get this tips from you.