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(this 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);
}
}
}
}
public static bool IsNull(this Object item)
{
return item == null;
}

}
}

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");
}
}
}