I have a GridView bound to a DataSource in which one of the BoundFields has a DataStringFormat of {"0:C0"}. When I delete a record I get an error indicating that the field cannot be converted to a Decimal type. If I remove the format, the delete works fine.

Is the GridView/DataSource combination not intelligent enough to automatically strip off formatting prior to a database operation?

An answer to my own question:

A BoundField has the property HtmlEncodeFormatString set to "True" by default. This interferes with the interaction with the DataSource. Set the property to "False" and the Delete (and presumably Insert & Update) work fine.