public void Delete(Func <WeatherInfo, bool> criteria)
 {
     using (var context = new LeafletWeatherModel())
     {
         context.Set <WeatherInfo>().Remove(context.Set <WeatherInfo>().SingleOrDefault(criteria));
         context.SaveChanges();
     }
 }
        public WeatherInfo Update(WeatherInfo entity)
        {
            using (var context = new LeafletWeatherModel())
            {
                var result = context.Set <WeatherInfo>().Attach(entity);
                context.Entry(entity).State = System.Data.Entity.EntityState.Modified;

                context.SaveChanges();
                return(result);
            }
        }