beginedit endedit - C# / C Sharp

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Hello, in the formClosing event I put an endEdit for the datagridview. Works fine. Except when the cursor is on the line for a new record. That gives errors because some fields are not filled (and...

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How do I determine if there are any rows within the BindingSource that have changed prior to calling the EndEdit(). I need to do this in order to archive some records and if I call the EndEdit()...

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