using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Reflection;
using ReflectionExtension;
namespace ReflectionExtension
{
    public static class ObjectReflectionExtension
    {
        public static void AddHanlder(Object objectEventRaiser, object objectBoundToDelegate, string methodName, string eventName)
        {
            if (objectEventRaiser == null | objectBoundToDelegate == null | string.IsNullOrEmpty(methodName) | string.IsNullOrEmpty(eventName) )
            {
                throw new ArgumentNullException();
            }
            else
            {
                Type _dataSourceType = objectEventRaiser.GetType();
                EventInfo _eventInfo = _dataSourceType.GetEvent(eventName);
                
                if (_eventInfo == null)
                {
                    throw new ArgumentException(string.Format("Impossibile trovare l'evento {0}", eventName));
                }
                else
                {
                    MethodInfo _methodInfo = objectBoundToDelegate.GetType().GetMethod(methodName, BindingFlags.NonPublic | BindingFlags.Instance);
                    if (_eventInfo == null)
                    {
                        throw new ArgumentException(string.Format("Impossibile trovare il metodo {0}", methodName));
                    }
                    else
                    {
                        Delegate _delegate = Delegate.CreateDelegate(_eventInfo.EventHandlerType, objectBoundToDelegate, _methodInfo);
                        _eventInfo.AddEventHandler(objectEventRaiser, _delegate);
                    }
                }
            }
        }
    }
}
namespace WebControlReflectionExtension
{
    public static class WebControlReflectionExtension
    {
        public static void AddInsertedHandler(this DataSourceControl dataSourceControl, object objectBoundToDelegate, string methodName)
        {
            ObjectReflectionExtension.AddHanlder(dataSourceControl, objectBoundToDelegate, methodName, "Inserted");
        }
        public static void AddDeleteddHandler(this DataSourceControl dataSourceControl, object objectBoundToDelegate, string methodName)
        {
            ObjectReflectionExtension.AddHanlder(dataSourceControl, objectBoundToDelegate, methodName, "Deleted");
        }
        public static void AddUpdateddHandler(this DataSourceControl dataSourceControl, object objectBoundToDelegate, string methodName)
        {
            ObjectReflectionExtension.AddHanlder(dataSourceControl, objectBoundToDelegate, methodName, "Updated");
        }
    }
}
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