RazorEngine性能研究(反射的延深)

//脚本化的C#想写对还是有点麻烦的，还好Razor能给出有用的错误信息。
public class RazorPropertySetter<TEntity> where TEntity :class
    { 
        string PropertyName;
        bool Inited = false;
        private RazorPropertySetter(){ }
        public static RazorPropertySetter<TEntity> Create( string propertyName)
        {
            RazorPropertySetter<TEntity> rs = new RazorPropertySetter<TEntity>();
            rs.PropertyName = propertyName;
            return rs;
        }
         
        public void Set(TEntity entity  , object value) 
        {
            string cacheKey = entity.GetType().FullName + "--" + this.PropertyName;
            DynamicViewBag viewBag = new DynamicViewBag();
            viewBag.AddValue("PropertyValue", value);
            if (Inited == false)
            { 
                string template = "@{Model."+PropertyName+ "= ViewBag.PropertyValue;}";
                Engine.Razor.RunCompile(template, cacheKey, typeof(TEntity), entity,viewBag);
                Inited = true;
            }
            else
            { 
                Engine.Razor.Run(cacheKey, typeof(TEntity), entity, viewBag);
            }
        }
    }