Copy data from one datatable to another datatable

I created a datatable(dt1) form a text file.
The third column store data like 
aaa,2012,693.20
bbb,2013,55.02
How to code to split out date from one column to three columns in another datatable(dt2) like below?
NAME--DATE-AMOUNT
aaa-----2012-693.20
bbb----2013-55.02