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Why does setting ComboBox's Datasource fire BeginEdit?

Posted on 2010-09-10
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Last Modified: 2012-08-14
I have a combobox whose DataSource is set to
a List of IEditableObjects.  The idea is the user will select an item from the list to create a parent-child link.

What's happening is upon setting the DataSource, BeginEdit is called for each object in the list.  I assume this is done during creation of the BindingContext however the objects are not editable at this stage.

Not only does this unneccessarily add overhead the objects in the list remain in a permanent state of in edit mode.  I know I can manually call CancelEdit for each item in the list but shouldn't there be a simpler solution.
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Question by:KurgerBurger
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MlandaT earned 125 total points
ID: 33652523
The IEditableObjects interface provides functionality to commit or rollback changes to an object that is used as a data source. Once you use the list of IEditableObjects as a datasource, the objects are readied for manipulation... NOTE: The object itself has no way of telling whether it is being bound to an object that supports editing or not. Once used as a DataSource, there is a possibility that the UI element being bound to allows editing. This is unfortunately standard behaviour and well... maybe just a fact of life... It does sound wasteful. The alternative is not to use the interface?
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