ASP.NET MVC2 - Custom Model Binder Examples

Question

I am trying to find some examples of building a custom model binder for a unique binding scenario I need to handle, but all of the articles I found were for older versions o

Answer 1

Take a look at several examples of Custom MVC Model binders on my blog.

Answer 2

I don't know why you think a lot has changed since MVC 1 regarding custom model binders. But If I understand what you are trying to do, it should be fairly easy.

public class CustomModelBinder : DefaultModelBinder {
    public override object BindModel(ControllerContext controllerContext, 
        ModelBindingContext bindingContext) {

        NameValueCollection form = controllerContext.HttpContext.Request.Form;
        //get what you need from the form collection

        //creata your model
        SomeModel myModel = new SomeMode();
        myModel.Property = "value";
        //or add some model errors if you need to
        ModelStateDictionary mState = bindingContext.ModelState;
        mState.Add("Property", new ModelState { });
        mState.AddModelError("Property", "There's an error.");

        return myModel; //return your model
    }
}

And your action :

public ActionResult Contact([ModelBinder(typeof(CustomModelBinder))]SomeModel m){
    //...
}

Was that the kind of information you are looking for?