Get all Data table into an Array

Hi, I having 25 records in my DataTable. I paginated with 5 records per page. I need all table records data as comma separated data in my array. For example i having 3 columns.
xxx yyy 1
eee fff 2
...
...
...

I need all data as xxx,yyy,1,eee,fff,2 ....... in a array variable? How can i do this ?