My problem is now much more trivial: how I can get my output as a row?, instead for column from example as below: int []PARAM = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17}; int zmax =11; for (int z = 0; z < zmax+1 ; z++) writer1.WriteLine(PARAM[z].ToString()+ " "); === output 1 2 3 4 5 6 7 8 9 10 11 12 //Ted teja