ASP.NET MVC: ValueProviders Execution Order

Question

I like to know the execution order of various ValueProviders in ASP.NET MVC.

ValueProviders:

• QueryStringValueProvider
• RouteDataValueProvider
• FormValueProvider
• ...

I did not find the information.

Answer 1

If memory serves me, priority is like that.

• Form data in the request
• Route data
• Query string
• Http File Collection

EDIT I seem to agree with the following site, which has the same order. http://www.howmvcworks.net/OnModelsAndViewModels/TheBeautyThatIsTheModelBinder

Answer 2

You can check this from the ASP.NET MVC source code: ValueProviderFactories.cs

Here is the predefined order for ValueProviders:

  private static readonly ValueProviderFactoryCollection _factories = new ValueProviderFactoryCollection() { new ChildActionValueProviderFactory(), new FormValueProviderFactory(), new JsonValueProviderFactory(), new RouteDataValueProviderFactory(), new QueryStringValueProviderFactory(), new HttpFileCollectionValueProviderFactory(), };