RedirectResult + Object as a parameter in a URL

Question

I am developing a full-web application and I am using the ASP.NET MVC 3 framework. I am implementing a subclass of ActionFilterAttribute.

I am overriding the OnActionExecuting method. If an exception is caught in OnActionExecuting method I want to redirect the client browser. The redirection URL targets an action method in one of my controllers. I want to pass data from the Exception object into the redirection URL.

Is there a way to build a URL including the Exception object and then passing the URL into the RedirectResult constructor?

Answer 1

You can use TempData for situations like this.

Just set TempData["MyException"] = myException before you redirect and then check for that TempData value in the action you redirect to.

Answer 2

Is there a way to build a URL including the Exception object and then passing the URL into the RedirectResult constructor ?

No. You can pass only query string parameters like for example:

var values = new RouteValueDictionary(new
{
    action = "foo",
    controller = "bar",
    exceptiontext = "foo bar baz"
});
filterContext.Result = new RedirectToRouteResult(values);

and in the target action you will be able to fetch the exception text parameter:

public Action Foo(string exceptionText)
{
    ...
}