Hello Kwame Johnson,
I am afraid that it is not possible to copy the contents of all selected cells when the grid is in edit mode since the editor will handle most of the key strokes. For example, if you have a cell in edit mode and you hit the "c" key the grid would not receive a KeyDown event since the TextBox editor will handle this event.
In regard to your second question, in its current version the grid will copy the content of all columns that appear in the Columns collection. I see that this might be a problem in many scenarios and we will try to provide means to alter this behavior.
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