ASP.Net MVC ModelBindingContext class— how are its model values populated?

Question

I\'m scratching my head a bit at how model binders do their work in ASP.Net MVC.

To be specific, the BindModel() method has a ModelBindingContext parameter that ho

Answer 1

The way I see it is that ControllerActionInvoker uses reflection to get the parameter type, it then checks if any ModelBinder is assigned to deal with that type, if so it instantiates this ModelBinder and passes it the BindingContext which will contain the (model object, model name, model type, property filter) for that parameter type object and a value provider collection (ModelBindingContext.ValueProvider) of all other value providers (Form, Query String etc.), acting as one big virtual value provider.

The ModelBinder then itself uses reflection to get all property names for the type its assigned to bind and runs itself recursively against all the value providers in (ModelBindingContext.ValueProvider) and looks for the property names in those value providers, binding those values for whom the names (taken from client) match the type property names, when they match the value provider returns a ValueProviderResult object, bearing the name and value for the respective property on the model.