public void AddEventHandler(object target, Delegate handler)
{
#if NET_2_0 && !MICRO_LIB
if (cached_add_event == null)
{
MethodInfo add = GetAddMethod();
if (add == null)
{
throw new InvalidOperationException("Cannot add a handler to an event that doesn't have a visible add method");
}
if (add.DeclaringType.IsValueType)
{
if (target == null && !add.IsStatic)
{
throw new TargetException("Cannot add a handler to a non static event with a null target");
}
add.Invoke(target, new object [] { handler });
return;
}
cached_add_event = CreateAddEventDelegate(add);
}
//if (target == null && is_instance)
// throw new TargetException ("Cannot add a handler to a non static event with a null target");
cached_add_event(target, handler);
#else
MethodInfo add = GetAddMethod();
if (add == null)
{
throw new InvalidOperationException("Cannot add a handler to an event that doesn't have a visible add method");
}
add.Invoke(target, new object [] { handler });
#endif
}
public virtual void AddEventHandler(object target, Delegate handler)
{
// this optimization cause problems with full AOT
// see bug https://bugzilla.xamarin.com/show_bug.cgi?id=3682
#if FULL_AOT_RUNTIME
MethodInfo add = GetAddMethod();
if (add == null)
{
throw new InvalidOperationException(SR.InvalidOperation_NoPublicAddMethod);
}
if (target == null && !add.IsStatic)
{
throw new TargetException("Cannot add a handler to a non static event with a null target");
}
add.Invoke(target, new object [] { handler });
#else
if (cached_add_event == null)
{
MethodInfo add = GetAddMethod();
if (add == null)
{
throw new InvalidOperationException(SR.InvalidOperation_NoPublicAddMethod);
}
if (add.DeclaringType.IsValueType)
{
if (target == null && !add.IsStatic)
{
throw new TargetException("Cannot add a handler to a non static event with a null target");
}
add.Invoke(target, new object [] { handler });
return;
}
cached_add_event = CreateAddEventDelegate(add);
}
//if (target == null && is_instance)
// throw new TargetException ("Cannot add a handler to a non static event with a null target");
cached_add_event(target, handler);
#endif
}
