Well, UltraDataRow will work if you want to get a row in an UltraDataSource, but it won't help you get the grid row.

In the grid, what you would do is use the ChildBands collection on the row. Something like this:

grid.Rows[0].ChildBands[0].Rows[0]

Thanks 

UltraDataRow has the following method :

GetChildRows(Infragistics.Win.UltraWinDataSource.UltraDataBand childBand)

You can get all data rows related with the given band.

Alex. 

How to get access to rows or cells of band [1]?
I get access to rows of Band [0]  so: ultraGrid. Rows [i].
To cells Band [0]: ultraGrid. Rows [i] .Cells [i].
And if cells belong Band [1], how to get access to them?