<dxg:GridControl.Columns>
    <dxg:GridColumn Header="面积" HorizontalHeaderContentAlignment="Center">
        <dxg:GridColumn.EditSettings>
            <dxe:TextEditSetting HorizontalContentAlignment="Center" />
        </dxg:GridColumn.EditSettings>
    </dxg:GridColumn>
</dxg:Gridontrol.Columns>