Sample ActionFilter with pre- and post-action synchronous processing

SampleFilter.cs

using System.Web.Http.Controllers;
using System.Web.Http.Filters;

namespace ActionFilter
{
    public class SampleFilter : ActionFilterAttribute
    {
        public override void OnActionExecuting(HttpActionContext actionContext)
        {
        }

        public override void OnActionExecuted(HttpActionExecutedContext actionExecutedContext)
        {
        }
    }
}