If you have your custom property setup properly it should be automatically refreshed on the screen properly.  What does your custom property look like?

Here's an example of one:

This field is bound to a SF Textbox.  The value comes from a secondary BO, such as _BO1 in the generic examples used earlier in this thread.  The value is retrieved from the secondary BO in the MainBO_Navigated event and set there through the code as follows.

_Property is the secondary BO.

None of the fields on the screen stay refreshed with the values retrieved from the secondary BOs unless I put the following code at the bottom of the MainBO_Navigated event:

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Did you override the GetCustomBindablePropertyDescriptors method of the BO and add your custom property...or create a FieldPropertyDescriptor class for that property?  Is there any way that you could post a simple sample that reproduces your behavior.  That might be easier so that we can see what your code is doing first hand.  Thanks.

Yes, I am overriding the GetCustomBindablePropertyDescriptors and adding my custom properties.  It might take me some time to try to get a sample together using the StrataFrame Sample database.   For now I'm ok with using Refresh() method to update the controls bound to custom fields that are set from the secondary BOs during the MainBO_Navigated event.