c# - 在asp.net mvc3中执行的OnAction中读取属性

Question

我有一个操作和属性，如下所示，我已覆盖 OnActionExecuting 并希望读取该方法中的属性

[MyAttribute(integer)]
public ActionResult MyAction()
{
}


protected override void OnActionExecuting(ActionExecutingContext filterContext)
{
    //here i want to read integer passed to action using Attribute
}

Answer 1

尝试一下:

Controller

protected override void OnActionExecuting(ActionExecutingContext filterContext)
{
  foreach (var filter in filterContext.ActionDescriptor.GetCustomAttributes(typeof (MyAttribute), false).Cast<MyAttribute>())
  {
    var desiredValue = filter.Parameter;
  }

  base.OnActionExecuting(filterContext);
}

过滤

public class MyAttribute : FilterAttribute, IActionFilter
{
  private readonly int _parameter;

  public MyAttribute(int parameter)
  {
    _parameter = parameter;
  }

  public int Parameter { get { return _parameter; } }

  public void OnActionExecuted(ActionExecutedContext filterContext)
  {
    //throw new NotImplementedException();
  }

  public void OnActionExecuting(ActionExecutingContext filterContext)
  {
    //throw new NotImplementedException();
  }
}