I set up

SelectionMode="Single" ReadOnly="True" SelectionUnit="Row" 

on  DataGridControl.

But when iI click somewhere in a row, selected cell become highlighted.

How can I select a full row without cell selected?

In addition to setting the SelectionUnit property to "Row", you can set the NavigationBehavior property to "RowOnly" to prevent the behavior you are seeing.

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Senior Technical Writer
- Xceed Software

In three words I can sum up everything I've learned about life: it goes on.