如何使用`BindModel(HttpActionContext actionContext ...`'签名创建自定义模型联编程序?

问题描述

我需要知道如何在MVC 4中创建自定义IModelBinder，并且已对其进行了更改.

I need to know how to create a custom IModelBinder in MVC 4 and it has been changed.

必须实现的新方法是:

bool BindModel(HttpActionContext actionContext, ModelBindingContext bindingContext);

推荐答案

有2个IModelBinder接口:

There are 2 IModelBinder interfaces:

1. System.Web.Mvc.IModelBinder 与以前的版本相同，并且未更改
2. System.Web.Http.ModelBinding.IModelBinder ，由Web API和ApiController使用.因此，基本上在此方法内，您必须将actionContext.ActionArguments设置为相应的值.您不再返回模型实例.

1. System.Web.Mvc.IModelBinder which is the same as in previous versions and hasn't changed
2. System.Web.Http.ModelBinding.IModelBinder which is used by the Web API and the ApiController. So basically inside this method you must set the actionContext.ActionArguments to the corresponding values. You no longer return a model instance.

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