Abstract
There are scenarios where an application requires the ability to undo changes made to an object. Data binding is one example because implementing the IEditableObject interface requires that an object be able to take a snapshot of its state, be edited, and then be able to return its state to that snapshot later. Another example is where the UI has a Cancel button that doesn’t close the form or page, in which case the user expects that clicking Cancel will revert the form’s data (and thus the business object) to a previous state.
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© 2009 Rockford Lhotka
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(2009). N-Level Undo. In: Expert VB 2008 Business Objects. Apress. https://doi.org/10.1007/978-1-4302-1639-1_13
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DOI: https://doi.org/10.1007/978-1-4302-1639-1_13
Publisher Name: Apress
Print ISBN: 978-1-4302-1638-4
Online ISBN: 978-1-4302-1639-1
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