ASP .NET Web API ModelBinder单个参数

本文介绍了ASP .NET Web API ModelBinder单个参数的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

当前，我有一个可以正常工作的ModelBinder：

Currently I've got this ModelBinder that works just fine:

public class FooModelBinder : IModelBinder { public bool BindModel(HttpActionContext actionContext, ModelBindingContext bindingContext) { var body = JObject.Parse(actionContext.Request.Content.ReadAsStringAsync().Result); IEnumerable<Foo1> media = new List<Foo1>(); var transaction = body.ToObject<Foo2>(); media = body["Media"].ToObject<List<Foo3>>(); transaction.Media = media; bindingContext.Model = transaction; return true; } }

如您所见，我正在映射整个绑定上下文.Model，但我真正想做的是仅映射Model的Media字段，并默认映射所有其他字段。

As you can see I'm mapping the whole bindingContext.Model, but what I really want to do is to map just the Media field of the Model and all of the other fields to map as default.

这是我的控制器：

public HttpResponseMessage Post([ModelBinder(typeof(FooModelBinder))] Foo request) { //do something }

这可以实现吗？

推荐答案

以下是我们所有模型联编程序的定义方式：

Here's how all of our model binders are defined:

公共类FooBinder：IModelBinder {

public class FooBinder : IModelBinder {

public bool BindModel(HttpActionContext actionContext, ModelBindingContext bindingContext) { if (bindingContext.ModelType == typeof(Foo)) { return FooParameter(actionContext, bindingContext); } return false; }

如果要从输入中输入多个参数，则只需指定所需的

If you want to make multiple parameters from your input you can just specify your desired binder in the your controller method.

public async Task<HttpResponseMessage> GetFoo( [ModelBinder] Foo1 foo1 = null, [ModelBinder] Foo2 foo2 = null) { ... }

我可能误解了您的问题，但这是我们系统中真实代码的示例。

I may have misunderstood your question but this is an example of real code in our system.