Find the last row in a datatable

[KingAce]

How can I find the last row in a datatable through code?
For example, lets say in table "TBL" there are the records
ID Name
1 Name1
2 Name2
3 Name3

Through code, how can I find Name3 (without knowing that there are only 3 rows in the datatable)?
TIA

 

[samsmithnz]

datatable.rows(datatable.rows.count-1).item("name").tostring