No. If you want to control the order, you woul dhave to do the looping your self, pulling in the right property for the current col index.
In your loop, you would use code similar to this to populate things quickly and avoid teh event processing that slows thing down when you use indexers.
//loop on rowIndex and colIndex
GridStyleInfo style = new GridStyleInfo();
style.CellValue = item; //your value...
SetCellInfo(rowIndex, colIndex, style, StyleModifyType.Override, true, true);