MarcosMeli

public static T ItemGetOrSet<T>(this HttpRequestBase request, string key, Func<T> calculator) where T: class
{
    if (request.RequestContext.HttpContext.Items.Contains(key))
        return (T) request.RequestContext.HttpContext.Items[key];

    var val = calculator();
    request.RequestContext.HttpContext.Items[key] = val;
    return val;
}

MarcosMeli

using System.Collections.Generic;

namespace DotCheck.Models
{
    public class QuestionFactory
    {
        public static List<ExamQuestion> FromConfig(ExamConfig config)
        {
            var res = new List<ExamQuestion>();
            var currentCategory = "";

MarcosMeli

      var engine = new FileHelperEngine<RecordClass>():
      var context = engine.CreateContext(): // will return a ProcessContext<RecordClass>
      
      // e will be of type FieldErrorEventHandler<T>
      context.Callbacks.OnFieldError = e => {
            // Fields of e
              e.Field
              e.Record
              e.RecordLine