Hi All,

I am trying to build a list of objects but if the underlying referenced object changes or goes away I have problems. To avoid this I am trying some code I found on c-shaprcorner to copy an object. I have tried two different versions, but both blow up on the third line and I am unable at the moment to find why. The objects passed in appear to be valid and the entity object has the [serializable] attribute on it.

Option One

public static LocationEntity MakeEntityCopy(LocationEntity entityToIsolate)
{
	MemoryStream stream = new MemoryStream();
	IFormatter formatter = new BinaryFormatter();
	formatter.Serialize(stream, entityToIsolate);
	stream.Seek(0, 0);
	LocationEntity IsolatedEntity = (LocationEntity)formatter.Deserialize(stream);
	stream.Close();
	return IsolatedEntity;
}

Option Two

public static LocationEntity MakeEntityCopy(LocationEntity entityToIsolate)
{
	MemoryStream stream = new MemoryStream();
	BinaryFormatter bf = new BinaryFormatter();
	bf.Serialize(stream, entityToIsolate);
	stream.Position = 0;
	LocationEntity IsolatedEntity = (LocationEntity)bf.Deserialize(stream);
	stream.Close();
	return IsolatedEntity;
}

Is there anything obvious I am missing?
Thanks
Tim