u r right Mohamed Mitwalli !!!
dear aarohi verma,
ur DataTable contains name column and keyskill column named dTable.
DataTable myDataTable = new DataTable();
DataRow myRow;
for(int i=0;i<=dTable.rows.count;i++)
{
myRow = myDataTable.NewRow();
myRow["name"] = dTable.Row[i][0].ToString();
string xx = dTable.Row[i][1].ToString();
string [] All= xx.Split(',').ToArray();
myRow["keyskill_1"] = All[0].ToString() ;
myRow["keyskill_2"] = All[1].ToString() ;
myDataTable.Rows.Add(myRow);
}