Modifying the value in a datarow

Question

Hi All ,

I have a datarow in which one of the column values having following structure :
ColName- Value
ColumnA - HYD , DEL , BLR

Now i want to modify the datarow by iterating each and every code like HYD , DEL and so on
annd i want to replace the value like the following way

ColName- Value
ColumnA - Hyderabad , Delhi , Bangalore .

Please suggest me .