[Mono-bugs] [Bug 651561] ReflectionPropertyDescriptor.AddValueChanged doesn't use object property xxxChanged events
bugzilla_noreply at novell.com
bugzilla_noreply at novell.com
Thu Nov 4 20:13:53 EDT 2010
https://bugzilla.novell.com/show_bug.cgi?id=651561
https://bugzilla.novell.com/show_bug.cgi?id=651561#c1
--- Comment #1 from Clinton Volzke <cvolzke at live.com.au> 2010-11-05 00:13:52 UTC ---
To fix, add this code to ReflectionPropertyDescriptor:
public override void AddValueChanged(object component, EventHandler
handler)
{
if (PropertyChangedEvent != null &&
PropertyChangedEvent.EventType.IsInstanceOfType(handler))
{
PropertyChangedEvent.AddEventHandler(component, handler);
}
else
{
base.AddValueChanged(component, handler);
}
}
public override void RemoveValueChanged(object component, EventHandler
handler)
{
if (PropertyChangedEvent != null &&
PropertyChangedEvent.EventType.IsInstanceOfType(handler))
{
PropertyChangedEvent.RemoveEventHandler(component, handler);
}
else
{
base.RemoveValueChanged(component, handler);
}
}
private bool propertyChangedEventQueried;
private EventDescriptor propertyChangedEvent;
private EventDescriptor PropertyChangedEvent
{
get
{
if (!propertyChangedEventQueried)
{
propertyChangedEventQueried = true;
propertyChangedEvent =
TypeDescriptor.GetEvents(ComponentType)[Name + "Changed"];
}
return propertyChangedEvent;
}
}
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