How to invalidate cache data [OutputCache] from a Controller?

Question

Using ASP.Net MVC 3 I have a Controller which output is being cached using attributes [OutputCache]

[OutputCache]
public controllerA(){}
         


        

Answer 1

You can do that by using a custom attribute, like so:

[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method)]
public sealed class NoCacheAttribute : ActionFilterAttribute
{
    public override void OnResultExecuting(ResultExecutingContext filterContext)
    {
        filterContext.HttpContext.Response.Cache.SetExpires(DateTime.UtcNow.AddDays(-1));
        filterContext.HttpContext.Response.Cache.SetValidUntilExpires(false);
        filterContext.HttpContext.Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);
        filterContext.HttpContext.Response.Cache.SetCacheability(HttpCacheability.NoCache);
        filterContext.HttpContext.Response.Cache.SetNoStore();

        base.OnResultExecuting(filterContext);
    }
}

Then on your controllerb you can do:

[NoCache]
public class controllerB
{
}