Question

Is there a way to make a DataGridView have no cell selected? I notice even when it loses focus() it has a at least one active cell. Is there another mode that allows this? or some other trick?

Answer 1

DataGridView.CurrentCell property can be used to clear the focus rectangle.

You can set this property (DataGridView.CurrentCell) to null to temporarily remove the focus rectangle, but when the control receives focus and the value of this property is null, it is automatically set to the value of the FirstDisplayedCell property.

http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridview.currentcell.aspx