How to avoid A, B, C and / or 1, 2, 3 in the headers

In a GridControl, whether the headers contain the default A, B, C, … or 1, 2, 3, … values is controlled by the properties in the Model.Options property.

//Hides A, B, C in the column headers.
this.gridControl1.Model.Options.NumberedColHeaders = false;

//Hides 1, 2, 3 in the row headers.
this.gridControl1.Model.Options.NumberedRowHeaders = false;
'Hides A, B, C in the column headers.
Me.GridControl1.Model.Options.NumberedColHeaders = False

'Hides 1, 2, 3 in the row headers.
Me.gridControl1.Model.Options.NumberedRowHeaders = False