Using ASP.NET MVC action parameters in custom attribute parameters

Question

I want to do something like this

[MyAttribute(Message="Please upgrade to view " + name)]
public ActionResult Details(string name)
{
    ....
}

I know I can call filterContext.ActionDescriptor.GetParameters() from inside the attribute code itself, but is there any way to use them in the controller?

Darin Dimitrov · Accepted Answer · 2011-05-28 19:40:31Z

2

The correct way to achieve this is to use a custom action filter and inside use either filterContext.ActionDescriptor.GetParameters() or fetch the required parameter from RouteData. You cannot have dynamic values in an attribute declaration because attributes represent metadata that are baked into the assembly at compile time => .NET doesn't allow you this. Only static or constant parameters could be used at attribute declaration.

answered May 28, 2011 at 19:40

Darin Dimitrov

1.0m275 gold badges3.3k silver badges3k bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Using ASP.NET MVC action parameters in custom attribute parameters

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related