ASP.NET MVC ActionFilter参数绑定

Question

如果在动作方法中有模型绑定参数，如何在动作过滤器中获取该参数？

[MyActionFilter] 
public ActionResult Edit(Car myCar) 
{ 
    ... 
} 

public class MyActionFilterAttribute : ActionFilterAttribute 
{ 
    public void OnActionExecuted(ActionExecutedContext filterContext) 
    { 
     //I want to access myCar here 
    } 

} 

有没有办法让myCar没有经过Form变量？

Answer 1

不确定OnActionExecuted，但你可以做到这一点在OnActionExecuting：

public class MyActionFilterAttribute : ActionFilterAttribute 
{ 
    public override void OnActionExecuting(ActionExecutingContext filterContext) 
    { 
     // I want to access myCar here 

     if(filterContext.ActionParameters.ContainsKey("myCar")) 
     { 
      var myCar = filterContext.ActionParameters["myCar"] as Car; 

      if(myCar != null) 
      { 
       // You can access myCar here 
      } 
     } 
    } 
}