How to hide the currentcell border in header cells?

//Form1()
this.gridControl1.DrawCurrentCellBorder += new GridDrawCurrentCellBorderEventHandler(gridControl1_DrawCurrentCellBorder);
void gridControl1_DrawCurrentCellBorder(object sender, GridDrawCurrentCellBorderEventArgs e)
  {
     //Chekcing whether currentcell is header cell
     if (e.Style.CellType == "Header")
     {
          //Canceling the currentcell border
          e.Cancel = true;
      }
  }

'Form1()
AddHandler gridControl1.DrawCurrentCellBorder, AddressOf gridControl1_DrawCurrentCellBorder
 
Private Sub gridControl1_DrawCurrentCellBorder(ByVal sender As Object, ByVal e As GridDrawCurrentCellBorderEventArgs)
      'Chekcing whether currentcell is header cell
      If e.Style.CellType Is "Header" Then
          'Canceling the currentcell border
          e.Cancel = True
      End If
End Sub