The alignment of the cells currently could be controlled either server-side or client-side with CSS. You could hook the CellDataBound event of RadPivotGrid and set the HorizontalAlign property of the cell to Righ/Left and thus the cell will have that aligning:
sender, Telerik.Web.UI.PivotGridCellDataBoundEventArgs e)
e.Cell.HorizontalAlign = HorizontalAlign.Right;
Or you could use the rpgDataCell class to control the appearance of the cells through CSS:
I think you will agree that we could not map all CSS styles to server-side properties, however, we will consider extending our server-side API.
the Telerik team
If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their blog feed